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(Webbsida)
Botanical Society of the British Isles (BSBI) 2018-: BSBI List of British & Irish Vascular Plants and Stoneworts.

http://www.nhm.ac.uk/our-science/data/uk-species/checklists/NHMSYS0000436459/index.html?resultsPerPage=8000


Kopplade växtnamn  [3456]
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Fullständigt namn Växtnamn Produktnamn Rollkoder
Abies alba  Mill. European silver-fir
Abies cephalonica  Loudon Greek fir
Abies cilicica  (Antoine & Kotschy) Carrière Cilician fir
Abies concolor  (Gordon & Glend.) Hildebr. Colorado white-fir
Abies firma  Siebold & Zucc. Momi fir
Abies grandis  (D.Don) Lindl. giant fir
Abies lasiocarpa  (Hook.) Nutt. subalpine fir
Abies nordmanniana  (Steven) Spach Caucasian fir
Abies pinsapo  Boiss. Spanish fir
Abies procera  Rehder noble fir
Abies veitchii  Lindl. Veitch's silver-fir
Abutilon pictum  (Hook. & Arn.) Walp. Chinese lantern
Abutilon theophrasti  Medik. velvetleaf
Acacia melanoxylon  R.Br. Australian blackwood
Acaena anserinifolia  (J.R.Forst. & G.Forst.) Druce bronze pirri-pirri-bur
Acaena caesiiglauca  (Bitter) Bergmans glaucous pirri-pirri-bur
Acaena inermis  Hook.f. spineless acaena
Acaena novae-zelandiae  Kirk pirri-pirri-bur
Acaena ovalifolia  Ruiz. & Pav. two-spined acaena
Acanthus mollis  L. bear's-breech
Acanthus spinosus  L. spiny bear's-breech
Acer campestre  L. field maple
Acer cappadocicum  Gled. Cappadocian maple
Acer heldreichii  Boiss. Heldrich's maple
Acer japonicum  Thunb. downy Japanese-maple
Acer macrophyllum  Pursh Oregon maple
Acer monspessulanum  L. Montpelier maple
Acer negundo  L. ashleaf maple
Acer palmatum  Thunb. smooth Japanese-maple
Acer platanoides  L. Norway maple
Acer pseudoplatanus  L. sycamore
Acer rubrum  L. red maple
Acer saccharinum  L. silver maple
Acer saccharum  Marshall sugar maple
Acer tataricum  L. Tartar maple
Achillea ageratum  L. sweet yarrow
Achillea distans  Willd. tall yarrow
Achillea filipendulina  Lam. fern-leaf yarrow
Achillea millefolium  L. yarrow
Achillea ptarmica  L. sneezewort
Achillea tomentosa  L. yellow milfoil
Achyranthes aspera  L. chaff-flower
Aconitum x cammarum  L. hybrid monk's-hood
Aconitum lycoctonum  L. wolf's-bane
Aconitum napellus  L. monk's-hood
Aconogonon alpinum  (All.) Schur alpine knotweed
Aconogonon campanulatum  (Hook.f.) H.Hara lesser knotweed
Aconogonon x fennicum  Reiersen Finnish knotweed
Aconogonon weyrichii  (F.Schmidt) H.Hara Chinese knotweed
Acorus calamus  L. sweet-flag
Acorus gramineus  Sol. slender sweet-flag
Actaea spicata  L. baneberry
Adiantum capillus-veneris  L. maidenhair fern
Adonis aestivalis  L. summer pheasant's-eye
Adonis annua  L. pheasant's-eye
Adonis flammea  Jacq. large pheasant's-eye
Aegopodium podagraria  L. ground-elder
Aeonium arboreum  (L.) Webb & Berthel. tree aeonium
Aesculus carnea  Hayne red horse-chestnut
Aesculus flava  Sol. yellow buckeye
Aesculus hippocastanum  L. horse-chestnut
Aesculus parviflora  Walter bottlebrush buckeye
Aethionema grandiflorum  Boiss. & Hohen. Persian candytuft
Aethionema saxatile  (L.) R.Br. burnt candytuft
Aethusa cynapium  L. fool's parsley
Agapanthus praecox  Willd. African lily
Agave americana  L. century plant
Ageratum houstonianum  Mill. flossflower
Agrimonia eupatoria  L. agrimony
Agrimonia procera  Wallr. fragrant agrimony
Agrostemma githago  L. corncockle
Agrostis canina  L. velvet bent
Agrostis capillaris  L. common bent
Agrostis castellana  Boiss. & Reut. highland bent
Agrostis scabra  Willd. rough bent
Agrostis stolonifera  L. creeping bent
Agrostis vinealis  Schreb. brown bent
Ailanthus altissima  (Mill.) Swingle tree-of-heaven
Aira praecox  L. early hair-grass
Ajuga chamaepitys  (L.) Schreb. ground-pine
Ajuga genevensis  L. Cornish bugle
Ajuga pyramidalis  L. pyramidal bugle
Ajuga reptans  L. bugle
Akebia quinata  (Houtt.) Decne. five-leaf akebia
Alcea rosea  L. hollyhock
Alchemilla alpina  L. alpine lady's-mantle
Alchemilla conjuncta  Bab. silver lady's-mantle
Alchemilla filicaulis  Buser hairy lady's-mantle
Alchemilla glabra  Neygenf. smooth lady's-mantle
Alchemilla mollis  (Buser) Rothm. garden lady's-mantle
Alchemilla xanthochlora  Rothm. intermediate lady's-mantle
Alisma gramineum  Lej. ribbon-leaved water-plantain
Alisma lanceolatum  With. narrow-leaved water-plantain
Alisma plantago-aquatica  L. water-plantain
Alkanna tuberculata  (Forssk.) Meikle alkanet
Alkekengi officinarum  Moench Japanese-lantern
Alliaria petiolata  (M.Bieb.) Cavara & Grande garlic mustard
Allium ampeloprasum Porrum-Gruppen   leek
Allium carinatum  L. keeled garlic
Allium cepa  L. onion
Allium fistulosum  L. Welsh onion
Allium moly  L. yellow garlic
Allium neapolitanum  Cirillo Neapolitan garlic
Allium nigrum  L. broad-leaved leek
Allium oleraceum  L. field garlic
Allium paniculatum  L. pale garlic
Allium paradoxum  (M.Bieb.) G.Don few-flowered garlic
Allium pendulinum  Ten. Italian garlic
Allium roseum  L. rosy garlic
Allium sativum  L. garlic
Allium schoenoprasum  L. chives
Allium scorodoprasum  L. sand leek
Allium siculum  Ucria honey garlic
Allium sphaerocephalon  L. round-headed leek
Allium subhirsutum  L. hairy garlic
Allium triquetrum  L. three-cornered leek
Allium tuberosum  Spreng. Chinese chives
Allium unifolium  Kellogg American garlic
Allium ursinum  L. ramsons
Allium vineale  L. wild onion
Alnus alnobetula  (Ehrh.) K.Koch green alder
Alnus cordata  (Loisel.) Duby Italian alder
Alnus glutinosa  (L.) Gaertn. alder
Alnus incana  (L.) Moench grey alder
Alnus orientalis  Decne. Oriental alder
Alnus rubra  Bong. red alder
Alonsoa meridionalis  (L.f.) Kuntze mask-flower
Alopecurus aequalis  Sobol. orange foxtail
Alopecurus geniculatus  L. marsh foxtail
Alopecurus magellanicus  Lam. alpine foxtail
Alopecurus myosuroides  Huds. black-grass
Alopecurus pratensis  L. meadow foxtail
Alstroemeria aurea  Graham Peruvian lily
Alternanthera sessilis  (L.) DC. rabbit-meat
Althaea hirsuta  L. rough marsh-mallow
Althaea officinalis  L. marsh-mallow
Alyssum alyssoides  (L.) L. small alison
Alyssum montanum  L. mountain alison
Amaranthus albus  L. white pigweed
Amaranthus blitum  L. Guernsey pigweed
Amaranthus caudatus  L. love-lies-bleeding
Amaranthus cruentus  L. purple amaranth
Amaranthus deflexus  L. perennial pigweed
Amaranthus graecizans  L. short-tepalled pigweed
Amaranthus hybridus  L. green amaranth
Amaranthus hypochondriacus  L. prince's-feather
Amaranthus spinosus  L. spiny amaranth
Amaranthus tricolor  L. tampala
Amaryllis belladonna  L. Jersey lily
Amberboa moschata  (L.) DC. sweet-sultan
Ambrosia artemisiifolia  L. ragweed
Ambrosia psilostachya  DC. perennial ragweed
Ambrosia trifida  L. giant ragweed
Amelanchier lamarckii  F.G.Schroed. juneberry
Amelanchier ovalis  Medik. snowy mespilus
Amelanchier spicata  (Lam.) K.Koch low juneberry
Ammi majus  L. bullwort
Ammi visnaga  (L.) Lam. toothpick-plant
Ammophila arenaria  (L.) Link marram
Amorphophallus konjac  K.Koch umbrella arum
Amsinckia calycina  (Moris) Chater hairy fiddleneck
Amsinckia lycopsoides  Lehm. scarce fiddleneck
Amsinckia spectabilis  Fisch. & C.A.Mey. seaside fiddleneck
Anacamptis morio  (L.) R.M.Bateman & al. green-winged orchid
Anacamptis pyramidalis  (L.) Rich. pyramidal orchid
Anagallis arvensis  L. scarlet pimpernel
Anagallis foemina  Mill. blue pimpernel
Anagallis minima  (L.) E.H.L.Krause chaffweed
Anagallis monelli  L. garden pimpernel
Anagallis tenella  (L.) L. bog pimpernel
Anaphalioides bellidioides  (G.Forst.) Glenny New Zealand everlastingflower
Anaphalis margaritacea  (L.) Benth. & Hook.f. pearly everlasting
Anarrhinum bellidifolium  (L.) Willd. daisy-leaved toadflax
Anchusa arvensis  (L.) M.Bieb. bugloss
Anchusa azurea  Mill. garden anchusa
Anchusa capensis  Thunb. Cape alkanet
Anchusa ochroleuca  M.Bieb. yellow alkanet
Anchusa officinalis  L. alkanet
Andromeda polifolia  L. bog-rosemary
Androsace maxima  L. annual androsace
Anemone apennina  L. blue anemone
Anemone coronaria  L. poppy anemone
Anemone x hybrida  Paxton Japanese anemone
Anemone nemorosa  L. wood anemone
Anemone ranunculoides  L. yellow anemone
Anemone sylvestris  L. snowdrop anemone
Anethum graveolens  L. dill
Angelica archangelica  L. garden angelica
Angelica pachycarpa  Lange Portuguese angelica
Angelica sylvestris  L. wild angelica
Anoda cristata  (L.) Schltdl. spurred anoda
Anredera cordifolia  (Ten.) Steenis Madeira-vine
Antennaria dioica  (L.) Gaertn. mountain everlasting
Anthemis arvensis  L. corn chamomile
Anthemis cotula  L. stinking chamomile
Anthemis cretica  L. mountain dog-daisy
Anthemis punctata  Vahl Sicilian chamomile
Anthericum ramosum  L. branched St Bernard's-lily
Anthoxanthum aristatum  Boiss. annual vernal-grass
Anthoxanthum odoratum  L. sweet vernal grass
Anthriscus caucalis  M.Bieb. bur chervil
Anthriscus cerefolium  (L.) Hoffm. garden chervil
Anthriscus sylvestris  (L.) Hoffm. cow parsley
Anthyllis tetraphylla  L. bladder vetch
Anthyllis vulneraria  L. kidney vetch
Antirrhinum majus  L. snapdragon
Apera interrupta  (L.) P.Beauv. dense silky-bent
Apera spica-venti  (L.) P.Beauv. loose silky-bent
Aphanes arvensis  L. parsley-piert
Aphanes australis  Rydb. slender parsley-piert
Apium graveolens  L. wild celery
Aponogeton distachyos  L.f. Cape-pondweed
Aptenia cordifolia  (L.f.) Schwantes heart-leaf iceplant
Aquilegia pyrenaica  DC. Pyrenean columbine
Aquilegia vulgaris  L. columbine
Arabidopsis arenosa  (L.) Lawelrée sand rock-cress
Arabidopsis petraea  (L.) V.I.Dorof. northern rock-cress
Arabidopsis thaliana  (L.) Heynh. thale cress
Arabis alpina  L. alpine rock-cress
Arabis caucasica  Schltdl. garden arabis
Arabis collina  Ten. rosy cress
Arabis hirsuta  (L.) Scop. hairy rock-cress
Arabis scabra  All. Bristol rock-cress
Arachis hypogaea  L. peanut
Aralia chinensis  L. Chinese angelica-tree
Aralia elata  (Miq.) Seem. Japanese angelica-tree
Aralia racemosa  L. American-spikenard
Araucaria araucana  (Molina) K.Koch monkey-puzzle
Arbutus x andrachnoides  Link hybrid strawberry-tree
Arbutus unedo  L. strawberry-tree
Arctium lappa  L. greater burdock
Arctium minus  (Hill) Bernh. lesser burdock
Arctium nemorosum  Lej. wood burdock
Arctium tomentosum  Mill. woolly burdock
Arctostaphylos alpinus  (L.) Spreng. alpine bearberry
Arctostaphylos uva-ursi  (L.) Spreng. bearberry
Arctotheca calendula  (L.) Levyns plain treasureflower
Arctotis stoechadifolia  P.J.Bergius white arctotis
Aremonia agrimonoides  (L.) DC. bastard agrimony
Arenaria balearica  L. mossy sandwort
Arenaria ciliata  L. fringed sandwort
Arenaria leptoclados  (Rchb.) Guss. slender sandwort
Arenaria montana  L. mountain sandwort
Arenaria norvegica  Gunnerus arctic sandwort
Arenaria serpyllifolia  L. thyme-leaved sandwort
Argemone mexicana  L. Mexican poppy
Argentina anserina  (L.) Rydb. silverweed
Argyranthemum frutescens  (L.) Sch.Bip. Paris daisy
Argyrocytisus battandieri  (Maire) Raynaud pineapple broom
Arisarum proboscideum  (L.) Savi mousetailplant
Aristolochia clematitis  L. birthwort
Aristolochia rotunda  L. smearwort
Armeria arenaria  (Pers.) Schult. Jersey thrift
Armeria maritima  (Mill.) Willd. thrift
Armeria maritima ssp. elongata  (Hoffm.) Bonnier tall thrift
Armeria pseudarmeria  (Murray) Mansf. Estoril thrift
Armoracia rusticana  P.Gaertn. & al. horse-radish
Arnebia pulchra  (Roem. & Schult.) J.R.Edm. prophet-flower
Arnica angustifolia  Vahl arctic arnica
Arnoseris minima  (L.) Schweigg. & Körte lamb's succory
Aronia arbutifolia  (L.) Pers. red chokeberry
Aronia melanocarpa  (Michx.) Elliott black chokeberry
Arrhenatherum elatius  (L.) J. & C.Presl false oat-grass
Artemisia abrotanum  L. southernwood
Artemisia absinthium  L. wormwood
Artemisia annua  L. annual mugwort
Artemisia campestris  L. field wormwood
Artemisia dracunculus  L. tarragon
Artemisia ludoviciana  Nutt. western mugwort
Artemisia maritima  L. sea wormwood
Artemisia norvegica  Fr. Norwegian mugwort
Artemisia pontica  L. Roman wormwood
Artemisia stelleriana  Besser hoary mugwort
Artemisia vulgaris  L. mugwort
Arum italicum  Mill. Italian lords-and-ladies
Arum maculatum  L. lords-and-ladies
Aruncus dioicus  (Walter) Fernald buck's-beard
Asarina procumbens  Mill. trailing snapdragon
Asarum europaeum  L. asarabacca
Asparagus officinalis  L. garden asparagus
Asperugo procumbens  L. madwort
Asperula arvensis  L. blue woodruff
Asperula cynanchica  L. squinancywort
Asperula orientalis  Boiss. & Hohen. annual woodruff
Asperula taurina  L. pink woodruff
Asperula tinctoria  L. dyer's woodruff
Asphodeline lutea  (L.) Rchb. yellow asphodel
Asphodelus albus  Mill. white asphodel
Asphodelus fistulosus  L. hollow-stemmed asphodel
Aspidistra elatior  Blume cast-iron-plant
Asplenium adiantum-nigrum  L. black spleenwort
Asplenium x alternifolium  Wulfen alternate-leaved spleenwort
Asplenium ceterach  L. rustyback
Asplenium fontanum  (L.) Bernh. smooth rock-spleenwort
Asplenium marinum  L. sea spleenwort
Asplenium obovatum  Viv. lanceolate spleenwort
Asplenium ruta-muraria  L. wall-rue
Asplenium scolopendrium  L. hart's-tongue
Asplenium septentrionale  (L.) Hoffm. forked spleenwort
Asplenium trichomanes  L. maidenhair spleenwort
Asplenium viride  Huds. green spleenwort
Aster amellus  L. European michaelmas-daisy
Astilbe Arendsii-Gruppen   red false-buck's-beard
Astilbe chinensis  (Maxim.) Franch. & Sav. tall false-buck's-beard
Astilbe japonica  (C.Morren & Decne.) A.Gray false-buck's-beard
Astilbe rivularis  D.Don tall false-buck's-beard
Astragalus alpinus  L. alpine milk-vetch
Astragalus cicer  L. chick-pea milk-vetch
Astragalus danicus  Retz. purple milk-vetch
Astragalus glycyphyllos  L. wild liquorice
Astrantia carniolica  Wulfen Carnic masterwort
Astrantia major  L. astrantia
Astrantia minor  L. lesser masterwort
Athyrium distentifolium  Opiz alpine lady-fern
Athyrium filix-femina  (L.) Roth lady fern
Atocion armeria  (L.) Raf. Sweet-William catchfly
Atriplex glabriuscula  Edmondston Babington's orache
Atriplex halimus  L. shrubby orache
Atriplex hortensis  L. garden orache
Atriplex laciniata  L. frosted orache
Atriplex littoralis  L. grass-leaved orache
Atriplex patula  L. common orache
Atriplex prostrata  DC. spear-leaved orache
Atriplex rosea  L. redscale
Atriplex sagittata  Borkh. purple orache
Atropa belladonna  L. deadly nightshade
Aubrieta deltoidea  (L.) DC. aubretia
Aucuba japonica  Thunb. spotted-laurel
Aurinia saxatilis  (L.) Desv. golden alison
Austroderia richardii  (Endl.) N.P.Barker & H.P.Linder early pampas-grass
Avena barbata  Link slender oat
Avena byzantina  K.Koch Algerian oat
Avena fatua  L. wild-oat
Avena nuda  L. naked oat
Avena sativa  L. oat
Avena sterilis  L. animated oat
Avena sterilis ssp. ludoviciana  (Durieu) Gillet & Magne winter wild-oat
Avena strigosa  Schreb. bristle oat
Avenella flexuosa  (L.) Drejer wavy hair-grass
Avenula pubescens  (Huds.) Dumort. downy oat-grass
Axyris amaranthoides  L. Russian pigweed
Azolla filiculoides  Lam. water fern
Baccharis halimifolia  L. tree groundsel
Baldellia ranunculoides  (L.) Parl. lesser water-plantain
Ballota nigra  L. black horehound
Baptisia tinctoria  (L.) Vent. wild-indigo
Barbarea intermedia  Boreau medium-flowered winter-cress
Barbarea stricta  Andrz. small-flowered winter-cress
Barbarea verna  (Mill.) Asch. American winter-cress
Barbarea vulgaris  R.Br. winter-cress
Bartsia alpina  L. alpine bartsia
Bassia scoparia  (L.) A.J.Scott summer-cypress
Beckmannia eruciformis  (L.) Host European slough-grass
Beckmannia syzigachne  (Steud.) Fernald American slough-grass
Begonia grandis  Dryand. hardy begonia
Begonia rex  Putz. painted-leaf begonia
Begonia x semperflorens-cultorum  H.K.Krauss wax begonia
Bellevalia romana  (L.) Rchb. Roman squill
Bellis perennis  L. daisy
Bellium bellidioides  L. false daisy
Berberis aggregata  C.K.Schneid. clustered barberry
Berberis buxifolia  Poir. box-leaved barberry
Berberis darwinii  Hook. Darwin's barberry
Berberis gagnepainii  C.K.Schneid. Gagnepain's barberry
Berberis julianae  C.K.Schneid. Chinese barberry
Berberis x stenophylla  Lindl. hedge barberry
Berberis thunbergii  DC. Thunberg's barberry
Berberis wilsoniae  Hemsl. & E.H.Wilson Mrs Wilson's barberry
Berberis vulgaris  L. barberry
Bergenia ciliata  (Haw.) Sternb. hairy bergenia
Bergenia cordifolia  (Haw.) Sternb. heart-leaved bergenia
Bergenia crassifolia  (L.) Fritsch elephant-ears
Berteroa incana  (L.) DC. hoary alison
Berula erecta  (Huds.) Coville lesser water-parsnip
Beta trigyna  Waldst. & Kit. Caucasian beet
Beta vulgaris  L. beet
Beta vulgaris Foderbeta-Gruppen   fodder beet
Beta vulgaris Mangold-Gruppen   foliage beet
Beta vulgaris ssp. maritima  (L.) Arcang. sea beet
Beta vulgaris Sockerbeta-Gruppen   sugar beet
Betonica officinalis  L. betony
Betula nana  L. dwarf birch
Betula pendula  Roth silver birch
Betula pubescens  Ehrh. downy birch
Bidens bipinnata  L. Spanish-needles
Bidens cernua  L. nodding bur-marigold
Bidens frondosa  L. beggarticks
Bidens pilosa  L. black-jack
Bidens tripartita  L. trifid bur-marigold
Biscutella cichoriifolia  Loisel. chicory-leaved buckler-mustard
Biscutella laevigata  L. buckler-mustard
Bistorta affinis  (D.Don) Greene Himalayan bistort
Bistorta amplexicaulis  (D.Don) Greene red bistort
Bistorta officinalis  Delarbre common bistort
Bistorta vivipara  (L.) Gray alpine bistort
Bituminaria bituminosa  (L.) Stirt. pitch trefoil
Blackstonia perfoliata  (L.) Huds. yellow-wort
Blechnum penna-marina  (Poir.) Kuhn antartic hard-fern
Blechnum spicant  (L.) Roth hard-fern
Bletilla striata  (Thunb.) Rchb.f. hyacinth orchid
Blitum bonus-henricus  (L.) Rchb. Good-King-Henry
Blitum capitatum  L. strawberry-blite
Blitum nutallianum  Schult. povertyweed
Blitum virgatum  L. strawberry goosefoot
Blysmus compressus  (L.) Link flat-sedge
Blysmus rufus  (Huds.) Link saltmarsh flat-sedge
Bolboschoenus maritimus  (L.) Palla sea club-rush
Boltonia asteroides  (L.) L'Hér. false chamomile
Bombycilaena erecta  (L.) Smoljan. micropus
Borago officinalis  L. borage
Borago pygmaea  (DC.) Chater & Greuter slender borage
Botrychium lunaria  (L.) Sw. moonwort
Bouteloua curtipendula  (Michx.) Torr. side-oats grama
Brachyglottis 'Sunshine'   shrub ragwort
Brachypodium distachyon  (L.) P.Beauv. stiff brome
Brachypodium pinnatum  (L.) P.Beauv. heath false-brome
Brachypodium sylvaticum  (Huds.) P.Beauv. false-brome
Brachyscome iberidifolia  Benth. Swan River daisy
Brassica carinata  A.Braun Ethiopian rape
Brassica fruticulosa  Cirillo twiggy turnip
Brassica juncea  (L.) Czern. Chinese mustard
Brassica napus  L. oilseed rape, rape
Brassica napus Napobrassica-Gruppen   swede
Brassica nigra  (L.) W.D.J.Koch black mustard
Brassica oleracea  L. wild cabbage
Brassica rapa  L. turnip
Brassica rapa ssp. campestris  (L.) A.R.Clapham wild turnip
Brassica rapa Oleifera-Gruppen   turnip-rape
Brassica rapa Rapifera-Gruppen   turnip
Brassica tournefortii  Gouan pale cabbage
Briza maxima  L. greater quaking-grass
Briza media  L. quaking-grass
Briza minor  L. lesser quaking-grass
Bromus arvensis  L. field brome
Bromus benekenii  (Lange) Trimen lesser hairy-brome
Bromus catharticus  Vahl rescue brome
Bromus commutatus  Schrad. meadow brome
Bromus erectus  Huds. upright brome
Bromus hordeaceus  L. common soft-brome
Bromus inermis  Leyss. Hungarian brome
Bromus japonicus  Thunb. Thunberg's brome
Bromus lanceolatus  Roth large-headed brome
Bromus madritensis  L. compact brome
Bromus pseudosecalinus  P.M.Sm. Smith's brome
Bromus racemosus  L. smooth brome
Bromus ramosus  Huds. hairy-brome
Bromus rigidus  Roith ripgut brome
Bromus rubens  L. foxtail brome
Bromus secalinus  L. rye brome
Bromus sterilis  L. barren brome
Bromus tectorum  L. drooping brome
Browallia speciosa  Hook. bush-violet
Brunnera macrophylla  (Adams) I.M.Johnst. great forget-me-not
Bryonia dioica  Jacq. white bryony
Buddleja davidii  Franch. butterfly-bush
Buddleja globosa  Hope orange-ball-tree
Buddleja x weyeriana  Weyer Weyer's butterfly-bush
Buglossoides arvensis  (L.) I.M.Johnst. field gromwell
Buglossoides purpurocaerulea  (L.) I.M.Johnst. purple gromwell
Bunias erucago  L. southern warty-cabbage
Bunias orientalis  L. warty-cabbage
Bunium bulbocastanum  L. great pignut
Bupleurum baldense  Turra small hare's-ear
Bupleurum falcatum  L. sickle-leaved hare's-ear
Bupleurum fruticosum  L. shrubby hare's-ear
Bupleurum petraeum  L. rock hare's-ear
Bupleurum rotundifolium  L. thorow-wax
Butomus umbellatus  L. flowering-rush
Buxus balearica  Lam. Balearic box
Buxus sempervirens  L. box
Cabomba caroliniana  A.Gray Carolina water-shield
Caesalpinia spinosa  (Molina) Kuntze tara
Cakile maritima  Scop. sea rocket
Calamagrostis canescens  (F.H.Wigg.) Roth purple small-reed
Calamagrostis epigejos  (L.) Roth wood small-reed
Calamagrostis stricta  (Timm) Koeler narrow small-reed
Calandrinia ciliata  (Ruiz & Pav.) DC. red-maids
Calceolaria chelidonioides  Kunth slipperwort
Calceolaria integrifolia  L. bush slipperwort
Calceolaria x speciosa  Lilja florist's slipperwort
Caldesia parnassifolia  (L.) Parl. parnassus-leaved water-plantain
Calendula arvensis  L. field marigold
Calendula officinalis  L. pot marigold
Calepina irregularis  (Asso) Thell. white ball-mustard
Calla palustris  L. bog arum
Callistephus chinensis  (L.) Nees China aster
Callitriche hamulata  W.D.J.Koch intermediate water-starwort
Callitriche hermaphroditica  L. autumnal water-starwort
Callitriche palustris  L. narrow-leaved water-starwort
Callitriche stagnalis  Scop. common water-starwort
Calluna vulgaris  (L.) Hull heather
Calocedrus decurrens  (Torr.) Florin Californian incense-cedar
Caltha palustris  L. marsh-marigold
Calypso bulbosa  (L.) Oakes calypso
Calystegia pulchra  Brummitt & Heywood hairy bindweed
Calystegia sepium  (L.) R.Br. hedge bindweed
Calystegia silvatica  (Kit.) Griseb. large bindweed
Calystegia soldanella  (L.) Roem. & Schult. sea bindweed
Camassia quamash  (Pursh) Greene common camash
Camelina microcarpa  DC. lesser gold-of-pleasure
Camelina sativa  (L.) Crantz gold-of-pleasure
Campanula alliariifolia  Willd. Cornish bellflower
Campanula bononiensis  L. pale bellflower
Campanula carpatica  Jacq. tussock bellflower
Campanula cochleariifolia  Lam. fairy's-thimble
Campanula fragilis  Cirillo Italian bellflower
Campanula garganica  Ten. Adriatic bellflower
Campanula glomerata  L. clustered bellflower
Campanula lactiflora  M.Bieb. milky bellflower
Campanula latifolia  L. giant bellflower
Campanula medium  L. Canterbury-bells
Campanula patula  L. spreading bellflower
Campanula persicifolia  L. peach-leaved bellflower
Campanula portenschlagiana  Schult. Adria bellflower
Campanula poscharskyana  Degen trailing bellflower
Campanula pyramidalis  L. chimney bellflower
Campanula rapunculoides  L. creeping bellflower
Campanula rapunculus  L. rampion bellflower
Campanula rhomboidalis  L. broad-leaved harebell
Campanula rotundifolia  L. harebell
Campanula trachelium  L. nettle-leaved bellflower
Campsis radicans  (L.) Seem. trumpet-creeper
Canna indica  L. Indian shot
Cannabis sativa  L. hemp
Capnoides sempervirens  (L.) Borkh. harlequin corydalis
Capsella bursa-pastoris  (L.) Medik. shepherd's-purse
Capsella rubella  Reut. pink shepherd's-purse
Capsicum annuum  L. sweet pepper
Caragana arborescens  Lam. Siberian pea-tree
Cardamine amara  L. large bitter-cress
Cardamine bulbifera  (L.) Crantz coralroot
Cardamine flexuosa  With. wavy bitter-cress
Cardamine heptaphylla  (Vill.) O.E.Schulz pinnate coralroot
Cardamine hirsuta  L. hairy bitter-cress
Cardamine impatiens  L. narrow-leaved bitter-cress
Cardamine kitaibelii  Bech. Kitaibel's bitter-cress
Cardamine pentaphyllos  (L.) Crantz five-leaflet bitter-cress
Cardamine pratensis  L. cuckooflower
Cardamine raphanifolia  Pourr. greater cuckooflower
Cardamine trifolia  L. trefoil cress
Carduus crispus  L. welted thistle
Carduus nutans  L. musk thistle
Carduus pycnocephalus  L. Plymouth thistle
Carduus tenuiflorus  Curtis slender thistle
Carex acuta  L. slender tufted-sedge
Carex acutiformis  Ehrh. lesser pond-sedge
Carex appropinquata  Schumach. fibrous tussock-sedge
Carex aquatilis  Wahlenb. water sedge
Carex arenaria  L. sand sedge
Carex atrata  L. black alpine-sedge
Carex atrofusca  Schkuhr scorched alpine-sedge
Carex bicolor  All. bicoloured sedge
Carex bigelowii  Schwein. stiff sedge
Carex binervis  Sm. green-ribbed sedge
Carex buchananii  Berggr. silver-spiked sedge
Carex buxbaumii  Wahlenb. club sedge
Carex canescens  L. white sedge
Carex capillaris  L. hair sedge
Carex caryophyllea  Latourr. spring-sedge
Carex chordorrhiza  L.f. string sedge
Carex davalliana  Sm. Davall's sedge
Carex diandra   lesser tussock-sedge
Carex digitata  L. fingered sedge
Carex dioica  L. dioecious sedge
Carex distans  L. distant sedge
Carex disticha  Huds. brown sedge
Carex divulsa  Stokes grey sedge
Carex echinata  Murray star sedge
Carex elata  All. tufted-sedge
Carex elongata  L. elongated sedge
Carex extensa  Gooden. long-bracted sedge
Carex flacca  Schreb. glaucous sedge
Carex flava  L. large yellow-sedge
Carex hirta  L. hairy sedge
Carex hostiana  DC. tawny sedge
Carex humilis  Leyss. dwarf sedge
Carex lachenalii  Schkuhr hare's-foot sedge
Carex lasiocarpa  Ehrh. slender sedge
Carex leersii  F.W.Schultz many-leaved sedge
Carex lepidocarpa  Tausch long-stalked yellow-sedge
Carex leporina  L. oval sedge
Carex limosa  L. bog-sedge
Carex maritima  Gunnerus curved sedge
Carex microglochin  Wahlenb. bristle sedge
Carex montana  L. soft-leaved sedge
Carex muricata  L. large-fruited prickly-sedge
Carex nigra  (L.) Reichard common sedge
Carex norvegica  Retz. close-headed alpine-sedge
Carex oederi  Retz. small-fruited yellow-sedge
Carex ornithopoda  Willd. bird's-foot sedge
Carex otrubae  Podp. false fox-sedge
Carex pairaei  F.W.Schultz small-fruited prickly-sedge
Carex pallescens  L. pale sedge
Carex panicea  L. carnation sedge
Carex paniculata  L. greater tussock-sedge
Carex pendula  Huds. pendulous sedge
Carex pilulifera  L. pill sedge
Carex pseudocyperus  L. cyperus sedge
Carex pulicaris  L. flea sedge
Carex punctata  Gaudin dotted sedge
Carex rariflora  (Wahlenb.) Sm. mountain bog-sedge
Carex remota  L. remote sedge
Carex riparia  Curtis greater pond-sedge
Carex rostrata  Stokes bottle sedge
Carex rupestris  All. rock sedge
Carex saxatilis  L. russet sedge
Carex simpliciuscula  Wahlenb. false sedge
Carex spicata  Huds. spiked sedge
Carex sylvatica  Huds. wood-sedge
Carex tomentosa  L. downy-fruited sedge
Carex vaginata  Tausch shealthed sedge
Carex vesicaria  L. bladder-sedge
Carex vulpina  L. true fox-sedge
Carex vulpinoidea  Michx. American fox-sedge
Carlina vulgaris  L. carline thistle
Carpinus betulus  L. hornbeam
Carpobrotus acinaciformis  (L.) L.Bolus Sally-my-handsome
Carpobrotus edulis  (L.) N.E.Br. Hottentot-fig
Carrichtera annua  (L.) DC. cress rocket
Carthamus lanatus  L. downy safflower
Carthamus tinctorius  L. safflower
Carum carvi  L. caraway
Carya cordiformis  (Wangenh.) K.Koch bitternut hickory
Carya ovata  (Mill.) K.Koch shagbark hickory
Caryopteris x clandonensis  Rehder bluebeard
Cassia fistula  L. purging cassia
Castanea crenata  Siebold & Zucc. Japanese chestnut
Castanea sativa  Mill. sweet chestnut
Castilleja exserta  (A.Heller) T.I.Chuang & Heckard purple owl-clover
Catabrosa aquatica  (L.) P.Beauv. whorl-grass
Catalpa bignonioides  Walter Indian-bean-tree
Catananche caerulea  L. blue cupidone
Catapodium rigidum  (L.) C.E.Hubb. fern-grass
Caucalis platycarpos  L. small bur parsley
Caulophyllum thalictroides  (L.) Michx. blue cohosh
Cedronella canariensis  (L.) Webb & Berthel. Canary Islands balm
Cedrus atlantica  (Endl.) Carrière Atlas cedar
Cedrus deodara  (Lamb.) G.Don deodar
Cedrus libani  A.Rich. cedar-of-Lebanon
Celastrus orbiculatus  Thunb. staff-vine
Cenchrus americanus  (L.) Morrone pearl millet
Cenchrus ciliaris  L. buffel-grass
Centaurea aspera  L. rough star-thistle
Centaurea benedicta  (L.) L. blessed thistle
Centaurea calcitrapa  L. red star-thistle
Centaurea cyanus  L. cornflower
Centaurea diluta  Aiton lesser star-thistle
Centaurea jacea  L. brown knapweed
Centaurea macrocephala  Willd. giant knapweed
Centaurea melitensis  L. Maltese star-thistle
Centaurea x moncktonii  C.E.Britton hybrid knapweed
Centaurea montana  L. perennial cornflower
Centaurea nigra  L. common knapweed
Centaurea paniculata  L. Jersey knapweed
Centaurea scabiosa  L. greater knapweed
Centaurea solstitialis  L. yellow star-thistle
Centaurea stoebe  L. panicled knapweed, spotted knapweed
Centaurium erythraea  Rafn common centaury
Centaurium littorale  (Turner) Gilmour seaside centaury
Centaurium pulchellum  (Sw.) Druce lesser centaury
Centaurium scilloides  (L.f.) Samp. perennial centaury
Centranthus calcitrapae  (L.) Dufr. annual valerian
Centranthus macrosiphon  Boiss. Spanish valerian
Centranthus ruber  (L.) DC. red valerian
Cephalanthera damasonium  (Mill.) Druce white helleborine
Cephalanthera longifolia  (L.) Fritsch narrow-leaved helleborine
Cephalanthera rubra  (L.) Rich. red helleborine
Cephalaria alpina  (L.) Roem. & Schult. alpine scabious
Cephalaria gigantea  (Ledeb.) Bobrov giant scabious
Cephalotaxus fortunei  Hook. Chinese plum-yew
Cephalotaxus harringtonii  (J.Forbes) K.Koch Japanese plum-yew
Cerastium alpinum  L. alpine mouse-ear
Cerastium arvense  L. field mouse-ear
Cerastium brachypetalum  Pers. grey mouse-ear
Cerastium cerastoides  (L.) Britton starwort mouse-ear
Cerastium diffusum  Pers. sea mouse-ear
Cerastium fontanum ssp. vulgare  (Hartm.) Greuter & Burdet common mouse-ear
Cerastium pumilum  Curtis dwarf mouse-ear
Cerastium semidecandrum  L. little mouse-ear
Cerastium tomentosum  L. snow-in-summer
Ceratocapnos claviculata  (L.) Lidén climbing corydalis
Ceratonia siliqua  L. carob
Ceratophyllum demersum  L. rigid hornwort
Ceratophyllum submersum  L. soft hornwort
Cercis siliquastrum  L. Judas-tree
Cerinthe glabra  Mill. smooth honeywort
Cerinthe major  L. greater honeywort
Cerinthe minor  L. lesser honeywort
Chaenomeles japonica  (Thunb.) Spach Japanse quince
Chaenorhinum minus  (L.) Lange small toadflax
Chaenorhinum origanifolium  (L.) Kostel. Malling toadflax
Chaerophyllum aromaticum  L. broad-leaved chervil
Chaerophyllum aureum  L. golden chervil
Chaerophyllum hirsutum  L. hairy chervil
Chaerophyllum temulum  L. rough chervil
Chaiturus marrubiastrum  (L.) Spenn. false motherwort
Chamaecrista nictitans  (L.) Moench sensitive cassia
Chamaecyparis lawsoniana  (A.Murray bis) Parl. Lawson's cypress
Chamaecyparis nootkatensis  (D.Don) Spach Nootka cypress
Chamaecyparis obtusa  (Siebold & Zucc.) Endl. hinoki cypress
Chamaecyparis pisifera  (Siebold & Zucc.) Endl. sawara cypress
Chamaemelum nobile  (L.) All. chamomile
Chamaenerion angustifolium  (L.) Scop. rosebay willowherb
Chamorchis alpina  (L.) Rich. false orchid
Chara aspera  Willd. rough stonewort
Chara hispida  L. bristly stonewort
Chara intermedia  A.Braun intermediate stonewort
Chara tomentosa  L. coral stonewort
Chara vulgaris  L. common stonewort
Chelidonium majus  L. greater celandine
Chenopodiastrum hybridum  (L.) S.Fuentes & al. maple-leaved goosefoot
Chenopodiastrum murale  (L.) S.Fuentes & al. nettle-leaved goosefoot
Chenopodium album  L. fat-hen
Chenopodium ficifolium  Sm. fig-leaved goosefoot
Chenopodium giganteum  D.Don tree spinach
Chenopodium opulifolium  W.D.J.Koch & Ziz grey goosefoot
Chenopodium purpurascens  Jacq. purple goosefoot
Chenopodium quinoa  Willd. quinoa
Chenopodium suecicum  Murr Swedish goosefoot
Chenopodium vulvaria  L. stinking goosefoot
Cherleria sedoides  L. cyphel
Chiastophyllum oppositifolium  (Ledeb.) A.Berger lamb's-tail
Chloris truncata  R.Br. windmill-grass
Chloris virgata  Sw. feathery Rhodes-grass
Chlorophytum comosum  (Thunb.) Jacques spider-plant
Choisya ternata  Kunth Mexican orange
Chondrilla juncea  L. skeletonweed
Chrozophora tinctoria  (L.) A.Juss. turn-sole
Chrysanthemum Koreanum-Gruppen   Korean chrysanthemum
Chrysanthemum x morifolium  Ramat. florists' chrysanthemum
Chrysocephalum apiculatum  (Labill.) Steetz yellow-buttons
Chrysocoma ciliata  L. fine-leaved goldilocks
Chrysocoma coma-aurea  L. shrub goldilocks
Chrysogonum virginianum  L. golden-knee
Chrysosplenium alternifolium  L. alternate-leaved golden-saxifrage
Chrysosplenium oppositifolium  L. opposite-leaved golden-saxifrage
Cicer arietinum  L. chick pea
Cichorium endivia  L. endive
Cichorium intybus  L. chicory
Cicuta virosa  L. cowbane
Circaea alpina  L. alpine enchanter's-nightshade
Circaea x intermedia  Ehrh. Upland enchanter's-nightshade
Circaea lutetiana  L. enchanter's-nightshade
Cirsium acaule  (L.) Scop. dwarf thistle
Cirsium arvense  (L.) Scop. creeping thistle
Cirsium dissectum  (L.) Hill meadow thistle
Cirsium eriophorum  (L.) Scop. woolly thistle
Cirsium erisithales  (Jacq.) Scop. yellow thistle
Cirsium heterophyllum  (L.) Hill melancholy thistle
Cirsium oleraceum  (L.) Scop. cabbage thistle
Cirsium palustre  (L.) Scop. marsh thistle
Cirsium rivulare  (Jacq.) All. brook thistle
Cirsium tuberosum  (L.) All. tuberous thistle
Cirsium vulgare  (Savi) Ten. spear thistle
Cistus albidus  L. grey-leaved cistus
Cistus creticus  L. hoary rock-rose
Cistus ladanifer  L. gum rock-rose
Cistus laurifolius  L. laurel-leaved cistus
Cistus salviifolius  L. sage-leaved rock-rose
Citrullus colocynthis  (L.) Schrad. bitter cucumber
Citrullus lanatus  (Thunb.) Matsum. & Nakai water melon
Citrus x aurantium  L. orange
Citrus x aurantium Paradisi-Gruppen   grapefruit
Citrus x limon  (L.) Osbeck lemon
Citrus reticulata  Blanco mandarin orange
Citrus trifoliata  L. Japanese bitter-orange
Cladium mariscus  (L.) Pohl great fen-sedge
Clarkia amoena  (Lehm.) A.Nelson & J.F.Macbr. godetia
Clarkia concinna  (Fisch. & C.A.Mey.) Greene red-ribbons
Clarkia unguiculata  Lindl. clarkia
Claytonia perfoliata  Willd. springbeauty
Claytonia sibirica  L. pink purslane
Claytonia virginica  L. Virginia springbeauty
Clematis cirrhosa  L. early virgin's-bower
Clematis flammula  L. virgin's-bower
Clematis montana  DC. Himalayan clematis
Clematis tangutica  (Maxim.) Korsh. orange-peel clematis
Clematis vitalba  L. traveller's joy
Cleome hassleriana  Chodat spiderflower
Clethra alnifolia  L. sweet pepperbush
Clethra arborea  Aiton lily-of-the-valley tree
Clinopodium acinos  (L.) Kuntze basil thyme
Clinopodium grandiflorum  (L.) Kuntze greater calamint
Clinopodium menthifolium  (Host) Stace wood calamint
Clinopodium nepeta  (L.) Kuntze lesser calamint
Clinopodium vulgare  L. wild basil
Clypeola jonthlaspi  L. disk cress
Cochlearia anglica  L. English scurvygrass
Cochlearia danica  L. Danish scurvygrass
Cochlearia officinalis  L. common scurvygrass
Coeloglossum viride  (L.) Hartm. frog orchid
Coincya monensis  (L.) Greuter & Burdut Isle of Man cabbage
Coix lacryma-jobi  L. Job's-tears
Colchicum autumnale  L. meadow saffron
Colocasia esculenta  (L.) Schott taro
Colutea arborescens  L. bladder-senna
Colutea x media  Willd. orange bladder-senna
Comarum palustre  L. marsh cinquefoil
Commelina diffusa  Burm.f. creeping spiderwort
Commelina tuberosa Coelestis-Gruppen   blue spiderwort
Conium maculatum  L. hemlock
Conopodium majus  (Gouan) Loret pignut
Conringia orientalis  (L.) Dumort. hare's-ear mustard
Consolida ajacis  (L.) Schur larkspur
Consolida orientalis  (J.Gay) Schrödinger eastern larkspur
Consolida regalis  Gray forking larkspur
Convallaria majalis  L. lily-of-the-valley
Convolvulus althaeoides  L. mallow-leaved bindweed
Convolvulus arvensis  L. field bindweed
Convolvulus sabatius  Viv. ground blue-convolvulus
Convolvulus siculus  L. small blue-convolvulus
Convolvulus tricolor  L. tricolour convolvulus
Conyza bonariensis  (L.) Cronquist Argentine fleabane
Conyza canadensis  (L.) Cronquist Canadian fleabane
Coprosma repens  A.Rich. tree bedstraw
Corallorhiza trifida  Châtel. coralroot orchid
Corchorus olitorius  L. tossa jute
Cordyline australis  (G.Forst.) Endl. cabbage-palm
Coreopsis grandiflora  Sweet large-flowered tickseed
Coreopsis tinctoria  Nutt. garden tickseed
Coreopsis verticillata  L. whorled tickseed
Coriandrum sativum  L. coriander
Corispermum hyssopifolium  L. hyssop-leaved bugseed
Cornus alba  L. white dogwood
Cornus alternifolia  L.f. pagoda dogwood
Cornus canadensis  L. creeping dogwood
Cornus capitata  Wall. Bentham's dogwood
Cornus florida  L. flowering dogwood
Cornus mas  L. Cornelian-cherry
Cornus sanguinea  L. dogwood
Cornus sericea  L. red-osier dogwood
Cornus suecica  L. dwarf cornel
Coronilla coronata  L. scorpion-vetch
Coronilla scorpioides  (L.) W.D.J.Koch annual scorpion-vetch
Coronilla valentina  L. shrubby scorpion-vetch
Corrigiola litoralis  L. strapwort
Cortaderia selloana  (Schult. & Schult.f.) Asch. & Graebn. pampas-grass
Corydalis capnoides  (L.) Pers. beaked corydalis
Corydalis cava  (L.) Schweigg. & Körte hollowroot
Corydalis cheilanthifolia  Hemsl. fern-leaved corydalis
Corydalis solida  (L.) Clairv. bird-in-a-bush
Corylus avellana  L. hazel
Corylus colurna  L. Turkish hazel
Corylus maxima  Mill. filbert
Corynephorus canescens  (L.) P.Beauv. grey hair-grass
Cosmos bipinnatus  Cav. Mexican aster
Cota austriaca  (Jacq.) Sch.Bip Austrian chamomile
Cota tinctoria  (L.) J.Gay yellow chamomile
Cota triumfettii  (L.) J.Gay southern dog-daisy
Cotinus coggygria  Scop. smoke-tree
Cotoneaster adpressus  Bois creeping cotoneaster
Cotoneaster apiculatus  Rehder & E.H.Wilson apiculate cotoneaster
Cotoneaster ascendens  Flinck & B.Hylmö ascending cotoneaster
Cotoneaster atropurpureus  Flinck & B.Hylmö purple-flowered cotoneaster
Cotoneaster bullatus  Bois hollyberry cotoneaster
Cotoneaster calocarpus  (Rehder & E.H.Wilson) Flinck & B.Hylmö Sikang cotoneaster
Cotoneaster cochleatus  (Franch.) G.Klotz Yunnan cotoneaster
Cotoneaster congestus  Baker congested cotoneaster
Cotoneaster conspicuus  C.Marquand Tibetan cotoneaster
Cotoneaster dammeri  C.K.Schneid. bearberry cotoneaster
Cotoneaster dielsianus  E.Pritz. Diels's cotoneaster
Cotoneaster divaricatus  Rehder & E.H.Wilson spreading cotoneaster
Cotoneaster fangianus  T.T.Yu Fang's cotoneaster
Cotoneaster franchetii  Bois Franchet's cotoneaster
Cotoneaster frigidus  Lindl. tree cotoneaster
Cotoneaster hjelmqvistii  Flinck & B.Hylmö Hjelmqvist's cotoneaster
Cotoneaster horizontalis  Decne. wall cotoneaster
Cotoneaster hummelii  J.Fryer & B.Hylmö Hummel's cotoneaster
Cotoneaster hylmoei  Flinck & J.Fryer Hylmö's cotoneaster
Cotoneaster integrifolius  (Roxb.) G.Klotz entire-leaved cotoneaster
Cotoneaster lacteus  W.W.Sm. late cotoneaster
Cotoneaster laetevirens  (Rehder & E.H.Wilson) G.Klotz Ampfield cotoneaster
Cotoneaster lucidus  Schltdl. shiny cotoneaster
Cotoneaster marginatus  (Loudon) Schltdl. fringed cotoneaster
Cotoneaster microphyllus  Lindl. small-leaved cotoneaster
Cotoneaster moupinensis  Franch. Moupin cotoneaster
Cotoneaster nanshan  Mottet dwarf cotoneaster
Cotoneaster nitens  Rehder & E.H.Wilson few-flowered cotoneaster
Cotoneaster obscurus  Rehder & E.H.Wilson obscure cotoneaster
Cotoneaster perpusillus  Flinck & B.Hylmö slender cotoneaster
Cotoneaster radicans  G.Klotz rooting cotoneaster
Cotoneaster rehderi  Pojark. bullate cotoneaster
Cotoneaster rotundifolius  Lindl. round-leaved cotoneaster
Cotoneaster salicifolius  Franch. willow-leaved cotoneaster
Cotoneaster simonsii  Baker Himalayan cotoneaster
Cotoneaster splendens  Flinck & B.Hylmö showy cotoneaster
Cotoneaster x suecicus  G.Klotz Swedish cotoneaster
Cotoneaster tomentellus  Pojark. short-felted cotoneaster
Cotoneaster wardii  W.W.Sm. Ward's cotoneaster
Cotoneaster x watereri  Exell Waterer's cotoneaster
Cotoneaster veitchii  (Rehder & E.H.Wilson) G.Klotz many-flowered cotoneaster
Cotoneaster zabelii  C.K.Schneid. cherryred cotoneaster
Cotula coronopifolia  L. buttonweed
Crambe cordifolia  Steven greater sea-kale
Crambe maritima  L. sea-kale
Crambe orientalis  L. Oriental sea-kale
Crassula aquatica  (L.) Schönland pigmyweed
Crassula helmsii  (Kirk) Cockayne New Zealand pigmyweed
Crassula pubescens  Thunb. Jersey pigmyweed
Crassula tillaea  Lest.-Garl. mossy stonecrop
Crataegus coccinea  L. pear-fruited cockspurthorn
Crataegus crus-galli  L. cockspurthorn
Crataegus douglasii  Lindl. black hawthorn
Crataegus intricata  Lange Lange's thorn
Crataegus laevigata  (Poir.) DC. Midland hawthorn
Crataegus x lavallei  Lavallée hybrid cockspurthorn
Crataegus monogyna  Jacq. hawthorn
Crataegus nigra  Waldst. & Kit. Hungarian thorn
Crataegus orientalis  M.Bieb. Oriental hawthorn
Crataegus x persimilis  Sarg. broad-leaved cockspurthorn
Crataegus punctata  Jacq. dotted hawthorn
Crataegus submollis  Sarg. hairy cockspurthorn
Crataegus succulenta  Link round-fruited cockspurthorn
Crataegus tanacetifolia  (Poir.) Pers. tansy-leaved thorn
Crataegus viridis  L. southern thorn
x Crataemespilus grandiflora  (Sm.) E.G.Camus haw-medlar
Crepis aurea  (L.) Cass. golden hawk's-beard
Crepis biennis  L. rough hawk's-beard
Crepis capillaris  (L.) Wallr. smooth hawk's-beard
Crepis foetida  L. stinking hawk's-beard
Crepis nicaeensis  Balb. French hawk's-beard
Crepis paludosa  (L.) Moench marsh hawk's-beard
Crepis praemorsa  (L.) Walther leafless hawk's-beard
Crepis pulchra  L. small-flowered hawk's-beard
Crepis rubra  L. pink hawk's-beard
Crepis setosa  Haller f. bristly hawk's-beard
Crepis tectorum  L. narrow-leaved hawk's-beard
Crepis vesicaria  L. beaked hawk's-beard
Crinum x powellii  L.H.Bailey Powell's Cape-lily
Crithmum maritimum  L. rock samphire
Crocosmia x crocosmiiflora  (Lemoine) N.E.Br. montbretia
Crocosmia masoniorum  (L.Bolus) N.E.Br. giant montbretia
Crocosmia paniculata  (Klatt) Goldblatt Aunt-Eliza
Crocosmia pottsii  (Baker) N.E.Br. Pott's montbretia
Crocus ancyrensis  (Herb.) Maw Ankara crocus
Crocus autumnalis  Mill. late crocus
Crocus biflorus  Mill. silvery crocus
Crocus chrysanthus  (Herb.) Herb. golden crocus
Crocus kotschyanus  K.Koch Kotschy's crocus
Crocus longiflorus  Raf. Italian crocus
Crocus nudiflorus  Sm. autumn crocus
Crocus pulchellus  Herb. hairy crocus
Crocus sativus  L. saffron crocus
Crocus sieberi  J.Gay Sieber's crocus
Crocus speciosus  M.Bieb. Bieberstein's crocus
Crocus x stellaris  Haw. yellow crocus
Crocus tommasinianus  Herb. early crocus
Crocus vernus  (L.) Hill spring crocus
Cruciata laevipes  Opiz crosswort
Crupina vulgaris  Cass. false saw-wort
Cryptogramma crispa  (L.) Richardson parsley fern
Cucumis melo  L. melon
Cucumis myriocarpus  Naudin gooseberry cucumber
Cucumis sativus  L. cucumber
Cucurbita ficifolia  C.D.Bouché fig-leaved gourd
Cucurbita maxima  Duchesne pumpkin
Cucurbita pepo  L. marrow
Cuminum cyminum  L. cumin
x Cupressocyparis leylandii  (A.B.Jacks. & Dallim.) Dallim. Leyland cypress
Cupressus macrocarpa  Gordon Monterey cypress
Cupressus sempervirens  L. Italian cypress
Cuscuta australis  R.Br. Australian dodder
Cuscuta epilinum  Weihe flax dodder
Cuscuta epithymum  (L.) L. dodder
Cuscuta europaea  L. greater dodder
Cuscuta suaveolens  Ser. lucerne dodder
Cyathea dealbata  (G.Forst.) Sw. silver tree-fern
Cyclamen coum  Mill. eastern sowbread
Cyclamen graecum  Link Greek cyclamen
Cyclamen hederifolium  Aiton sowbread
Cyclamen persicum  Mill. florist's cyclamen
Cyclamen repandum  Sibth. & Sm. spring sowbread
Cydonia oblonga  Mill. quince
Cymbalaria hepaticifolia  (Poir.) Wettst. Corsican toadflax
Cymbalaria muralis  P.Gaertn. & al. ivy-leaved toadflax
Cymbalaria pallida  (Ten.) Wettst. Italian toadflax
Cynara cardunculus Scolymus-Gruppen   globe artichoke
Cynodon dactylon  (L.) Pers. Burmuda grass
Cynoglossum amabile  Stapf & J.R.Drumm. Chinese hound's-tongue
Cynoglossum germanicum  Jacq. green hound's-tongue
Cynoglossum nervosum  C.B.Clarke Himalayan hound's-tongue
Cynoglossum officinale  L. hound's-tongue
Cynoglottis barrelieri  (All.) Vural & Kit Tan false alkanet
Cynosurus cristatus  L. crested dog's-tail
Cynosurus echinatus  L. rough dog's-tail
Cyperus congestus  Vahl dense flat-sedge
Cyperus eragrostis  Lam. pale galingale
Cyperus esculentus  L. yellow nutsedge
Cyperus fuscus  L. brown galingale
Cyperus longus  L. galingale
Cyperus rotundus  L. purple nutsedge
Cypripedium calceolus  L. lady's-slipper
Cyrtanthus elatus  (Jacq.) Traub Scarborough lily
Cyrtomium falcatum  (L.f.) C.Presl house holly-fern
Cystopteris alpina  (Lam.) Desv. alpine bladder-fern
Cystopteris fragilis  (L.) Bernh. brittle bladder-fern
Cystopteris montana  (Lam.) Desv. mountain bladder-fern
Cytisus hirsutus  L. clustered broom
Cytisus multiflorus  (L'Hér.) Sweet white broom
Cytisus nigricans  L. black broom
Cytisus purpureus  Scop. purple broom
Cytisus scoparius  (L.) Link broom
Daboecia cantabrica  (Huds.) K.Koch St Dabeoc's heath
Dactylis glomerata  L. cock's-foot
Dactylis glomerata ssp. lobata  (Drejer) H.Lindb. slender cock's-foot
Dactylorhiza incarnata  (L.) Soó early marsh-orchid
Dactylorhiza maculata  (L.) Soó heath spotted-orchid
Dactylorhiza maculata ssp. fuchsii  (Druce) Hyl. common spotted-orchid
Dactylorhiza majalis ssp. integrata  (E.G.Camus) H.A.Pedersen southern marsh-orchid
Dactylorhiza majalis ssp. lapponica  (Hartm.) H.Sund. Lapland marsh-orchid
Dactylorhiza majalis ssp. purpurella  (T.Stephenson & T.A.Stephenson) D.M.Moore & Soó northern marsh-orchid
Dahlia x pinnata  Cav. dahlia, garden dahlia
Damasonium alisma  Mill. starfruit
Danthonia decumbens  (L.) DC. heath-grass
Daphne laureola  L. spurge-laurel
Daphne mezereum  L. mezereon
Darmera peltata  (Benth.) Voss Indian-rhubarb
Dasiphora fruticosa  (L.) Rydb. shrubby cinquefoil
Datura ferox  L. angel's-trumpets
Datura inoxia  Mill. recurved thorn-apple
Datura stramonium  L. thorn-apple
Daucus carota  L. carrot
Daucus carota ssp. carota   wild carrot
Daucus carota ssp. gummifer  (Syme) Hook.f. sea carrot
Daucus carota ssp. sativus  (Hoffm.) Schübl. & G.Martens carrot
Davallia canariensis  (L.) Sm. hare's-foot fern
Davidia involucrata  Baill. dove-tree
Delairea odorata  Lem. German-ivy
Delphinium elatum  L. alpine delphinium
Delphinium Elatum-Gruppen   garden delphinium
Delphinium peregrinum  L. violet larkspur
Deschampsia cespitosa  (L.) P.Beauv. tufted hair-grass
Deschampsia setacea  (Huds.) Hack. bog hair-grass
Descurainia pinnata  (Walter) Britton tansy-mustard
Descurainia sophia  (L.) Prantl flixweed
Deutzia scabra  Thunb. deutzia
Dianthus arenarius  L. stone pink
Dianthus armeria  L. Deptford pink
Dianthus barbatus  L. Sweet-William
Dianthus carthusianorum  L. Carthusian pink
Dianthus deltoides  L. maiden pink
Dianthus gratianopolitanus  Vill. Cheddar pink
Dianthus hyssopifolius ssp. gallicus  (Pers.) M.Laínz & Muñoz Garm. Jersey pink
Dianthus plumarius  L. pink
Dianthus sylvestris  Wulfen wood pink
Diapensia lapponica  L. diapensia
Dicentra eximia  (Ker Gawl.) Torr. turkey-corn
Dicentra formosa  (Haw.) Walp. bleeding-heart
Dichondra micrantha  Urb. kidneyweed
Dicksonia antarctica  Labill. Australian tree-fern
Dieffenbachia seguine  (Jacq.) Schott dumb-cane
Digitalis ferruginea  L. rusty foxglove
Digitalis grandiflora  Mill. yellow foxglove
Digitalis lanata  Ehrh. Grecian foxglove
Digitalis lutea  L. straw foxglove
Digitalis purpurea  L. foxglove
Digitaria ciliaris  (Retz.) Koeler tropical finger-grass
Digitaria ischaemum  (Schweigg.) Muhl. smooth finger-grass
Digitaria sanguinalis  (L.) Scop. hairy finger-grass
Dimorphotheca pluvialis  (L.) Moench Cape rain-daisy
Dimorphotheca sinuata  DC. Namaqualand daisy
Dioscorea communis  (L.) Caddick & Wilkin black bryony
Diplotaxis erucoides  (L.) DC. white rocket
Diplotaxis muralis  (L.) DC. annual wall-rocket
Diplotaxis tenuifolia  (L.) DC. perennial wall-rocket
Diplotaxis viminea  (L.) DC. vineyard wall-rocket
Dipsacus fullonum  L. wild teasel
Dipsacus laciniatus  L. cut-leaved teasel
Dipsacus pilosus  L. small teasel
Dipsacus sativus  (L.) Honck. fuller's teasel
Dipsacus strigosus  Roem. & Schult. yellow-flowered teasel
Disphyma crassifolium  (L.) L.Bolus purple dewplant
Dittrichia graveolens  (L.) Greuter stinking fleabane
Dittrichia viscosa  (L.) Greuter woody fleabane
Doellingeria umbellata  (Mill.) Nees tall white-aster
Doronicum austriacum  Jacq. Austrian leopard's-bane
Doronicum columnae  Ten. eastern leopard's-bane
Doronicum x excelsum  (N.E.Br.) Stace Harpur-Crewe's leopard's-bane
Doronicum pardalianches  L. leopard's-bane
Doronicum plantagineum  L. plantain-leaved leopard's-bane
Doronicum x willdenowii  Rouy Willdenow's leopard's-bane
Dorycnium hirsutum  (L.) Ser. Canary clover
Dorycnium rectum  (L.) Ser. greater badassi
Downingia elegans  (Lindl.) Torr. Californian lobelia
Draba aizoides  L. yellow whitlow-grass
Draba incana  L. hoary whitlowgrass
Draba muralis  L. wall whitlowgrass
Draba norvegica  Gunnerus rock whitlowgrass
Draba verna  L. common whitlowgrass
Dracocephalum moldavica  L. Moldavian dragon-head
Dracocephalum parviflorum  Nutt. American dragon-head
Dracunculus vulgaris  Schott dragon arum
Drosanthemum floribundum  (Haw.) Schwantes pale dewplant
Drosera anglica  Huds. great sundew
Drosera binata  Labill. forked sundew
Drosera capensis  L. Cape sundew
Drosera intermedia  Hayne oblong-leaved sundew
Drosera rotundifolia  L. round-leaved sundew
Dryas octopetala  L. mountain avens
Drymocallis arguta  (Pursh) Rydb. tall cinquefoil
Drymocallis rupestris  (L.) Soják rock cinquefoil
Dryopteris affinis  (Lowe) Fraser-Jenk. scaly male-fern
Dryopteris carthusiana  (Vill.) H.P.Fuchs narrow buckler-fern
Dryopteris cristata  (L.) A.Gray crested buckler-fern
Dryopteris dilatata  (Hoffm.) A.Gray broad buckler-fern
Dryopteris filix-mas  (L.) Schott male-fern
Dryopteris mindshelkensis  Pavlov rigid buckler-fern
Dryopteris oreades  Fomin mountain male-fern
Dryopteris remota  (A.Braun) Druce scaly buckler-fern
Dysphania ambrosioides  (L.) Mosyakin & Clemants Mexican-tea
Dysphania botrys  (L.) Mosyakin & Clemants sticky goosefoot
Ecballium elaterium  (L.) A.Rich. squirting cucumber
Eccremocarpus scaber  Ruiz & Pav. Chilean glory-flower
Echinochloa crus-galli  (L.) P.Beauv. cockspur
Echinochloa esculenta  (A.Braun) H.Scholz white millet
Echinochloa frumentacea  (Roxb.) Link white millet
Echinops bannaticus  Schrad. blue globe-thistle
Echinops exaltatus  Schrad. globe-thistle
Echinops sphaerocephalus  L. glandular globe-thistle
Echinops strigosus  L. rough-leaved globe-thistle
Echium italicum  L. pale bugloss
Echium pininana  Webb & Berthel. giant viper's-bugloss
Echium plantagineum  L. purple viper's-bugloss
Echium rosulatum  Lange lax viper's-bugloss
Echium vulgare  L. viper's-bugloss
Egeria densa  Planch. large-flowered waterweed
Eichhornia crassipes  (Mart.) Solms water-hyacinth
Elaeagnus commutata  Rydb. silver-berry
Elaeagnus macrophylla  Thunb. broad-leaved oleaster
Elaeagnus multiflora  Thunb. cherry elaeagnus
Elaeagnus pungens  Thunb. spiny oleaster
Elaeagnus umbellata  Thunb. spreading oleaster
Elatine hexandra  (Lapierre) DC. six-stamened waterwort
Elatine hydropiper  L. eight-stamened waterwort
Eleocharis acicularis  (L.) Roem. & Schult. needle spike-rush
Eleocharis mamillata  (H.Lindb.) H.Lindb. northern spike-rush
Eleocharis multicaulis  (Sm.) Desv. many-stalked spike-rush
Eleocharis palustris  (L.) Roem. & Schult. common spike-rush
Eleocharis parvula  (Roem. & Schult.) Bluff & al. dwarf spike-rush
Eleocharis quinqueflora  (Hartmann) O.Schwarz few-flowered spike-rush
Eleocharis uniglumis  (Link) Schult. slender spike-rush
Eleusine coracana  (L.) Gaertn. finger millet
Eleusine indica  (L.) Gaertn. yard-grass
Eleusine tristachya  (Lam.) Lam. american yard-grass
Elodea canadensis  Michx. Canadian waterweed
Elodea nuttallii  (Planch.) H.St.John Nuttall's waterweed
Elymus caninus  (L.) L. bearded couch
Elymus hystrix  L. bottle-brush-grass
Elymus repens  (L.) Gould common couch
Empetrum nigrum  L. crowberry
Empetrum nigrum ssp. hermaphroditum  (Hagerup) Böcher mountain crowberry
Epilobium alsinifolium  Vill. chickweed willowherb
Epilobium anagallidifolium  Lam. alpine willowherb
Epilobium canum  (Greene) P.H.Raven Californian fuchsia
Epilobium ciliatum  Raf. American willowherb
Epilobium hirsutum  L. great willowherb
Epilobium komarovianum  H.Lév. bronzy willowherb
Epilobium lanceolatum  Sebast. & Mauri spear-leaved willowherb
Epilobium montanum  L. broad-leaved willowherb
Epilobium obscurum  Schreb. short-fruited willowherb
Epilobium palustre  L. marsh willowherb
Epilobium parviflorum  Schreb. hoary willowherb
Epilobium pedunculare  A.Cunn. rockery willowherb
Epilobium roseum  Schreb. pale willowherb
Epilobium tetragonum  L. square-stalked willowherb
Epimedium alpinum  L. barrenwort
Epimedium perralderianum  Coss. Algerian barrenwort
Epimedium pinnatum  Fisch. Caucasian barrenwort
Epipactis atrorubens  (Hoffm.) Besser dark-red helleborine
Epipactis helleborine  (L.) Crantz broad-leaved helleborine
Epipactis palustris  (L.) Crantz marsh helleborine
Epipactis phyllanthes  G.E.Sm. green-flowered helleborine
Epipogium aphyllum  Sw. ghost orchid
Equisetum arvense  L. field horsetail
Equisetum fluviatile  L. water horsetail
Equisetum hyemale  L. rough horsetail
Equisetum x litorale  Rupr. shore horsetail
Equisetum palustre  L. marsh horsetail
Equisetum pratense  Ehrh. shady horsetail
Equisetum sylvaticum  L. wood horsetail
Equisetum telmateia  Ehrh. great horsetail
Equisetum variegatum  Schleich. variegated horsetail
Eragrostis cilianensis  (All.) Janch. stink-grass
Eragrostis curvula  (Schrad.) Nees African love-grass
Eragrostis minor  Host small love-grass
Eragrostis pilosa  (L.) P.Beauv. Jersey love-grass
Eragrostis tef  (Zuccagni) Trotter teff
Eranthis hyemalis  (L.) Salisb. winter aconite
Erepsia heteropetala  (Haw.) Schwantes lesser sea-fig
Erica arborea  L. tree heath
Erica carnea  L. winter heath
Erica ciliaris  L. Dorset heath
Erica cinerea  L. bell heather
Erica lusitanica  Rudolphi Portuguese heath
Erica terminalis  Salisb. Corsican heath
Erica vagans  L. Cornish heath
Erigeron acris  L. blue fleabane
Erigeron annuus  (L.) Pers. tall fleabane
Erigeron borealis  (Vierh.) Simmons alpine fleabane
Erigeron glaucus  Ker Gawl. seaside daisy
Erigeron karvinskianus  DC. Mexican fleabane
Erigeron philadelphicus  L. Robin's-plantain
Erigeron speciosus  (Lindl.) DC. garden fleabane
Erinus alpinus  L. fairy foxglove
Eriobotrya japonica  (Thunb.) Lindl. loquat
Eriophorum angustifolium  Honck. common cottongrass
Eriophorum gracile  W.D.J.Koch slender cottongrass
Eriophorum latifolium  Hoppe broad-leaved cottongrass
Eriophorum vaginatum  L. hare's-tail cottongrass
Eritrichium nanum  (L.) Gaudin king-of-the-Alps
Erodium botrys  (Cav.) Bertol. Mediterranean stork's-bill
Erodium chium  (L.) Willd. three-lobed stork's-bill
Erodium cicutarium  (L.) L'Hér. common stork's-bill
Erodium gruinum  (L.) Aiton long-beaked stork's-bill
Erodium malacoides  (L.) L'Hér. soft stork's-bill
Erodium manescavii  Coss. garden stork's-bill
Erodium maritimum  (L.) L'Hér. sea stork's-bill
Erodium moschatum  (L.) L'Hér. musk stork's-bill
Erucastrum gallicum  (Willd.) O.E.Schulz hairy rocket
Erucastrum nasturtiifolium  (Poir.) O.E.Schulz watercress-leaved rocket
Eryngium amethystinum  L. Italian eryngo
Eryngium campestre  L. field eryngo
Eryngium giganteum  M.Bieb. tall eryngo
Eryngium maritimum  L. sea-holly
Eryngium planum  L. blue eryngo
Erysimum asperum  (Nutt.) DC. western wallflower
Erysimum cheiranthoides  L. treacle-mustard
Erysimum cheiri  (L.) Crantz wallflower
Erysimum x marshallii  (Henfr.) Bois Siberian wallflower
Erysimum repandum  L. spreading treacle-mustard
Erythranthe cardinalis  (Benth.) Spach scarlet monkeyflower
Erythranthe guttata  (DC.) G.L.Nesom monkeyflower
Erythranthe lutea  (L.) G.L.Nesom blood-drop-emlets
Erythranthe x maculosa  (T.Moore) Mabb. Scottish monkeyflower
Erythranthe moschata  Lindl.) G.L.Nesom & Fraga musk
Erythronium dens-canis  L. dog's-tooth-violet
Escallonia rubra var. macrantha  (Hook. & Arn.) Reiche escallonia
Eschscholzia californica  Cham. Califonian poppy
Eucalyptus coccifera  Hook.f. Tasmanian snow-gum
Eucalyptus dalrympleana  Maiden broad-leaved kindlingbark
Eucalyptus globulus  Labill. southern blue-gum
Eucalyptus gunnii  Hook.f. cider gum
Eucalyptus johnstonii  Maiden Johnston's gum
Eucalyptus parvula  L.A.S.Johnson & K.D.Hill small-leaved gum
Eucalyptus pauciflora ssp. niphophila  (Maiden & Blakely) L.A.S.Johnson & Blaxell shrubby snow-gum
Eucalyptus urnigera  Hook.f. urn-fruited gum
Eudianthe coeli-rosa  (L.) Rchb. rose-of-heaven
Euonymus europaeus  L. spindle
Euonymus hamiltonianus  Wall. Himalayan spindle
Euonymus japonicus  Thunb. evergreen spindle
Euonymus latifolius  (L.) Mill. large-leaved spindle
Eupatorium cannabinum  L. hemp-agrimony
Euphorbia amygdaloides  L. wood spurge
Euphorbia ceratocarpa  Ten. horned spurge
Euphorbia characias  L. Mediterranean spurge
Euphorbia corallioides  L. coral spurge
Euphorbia cyparissias  L. cypress spurge
Euphorbia dulcis  L. sweet spurge
Euphorbia esula  L. leafy spurge
Euphorbia exigua  L. dwarf spurge
Euphorbia falcata  L. sickle spurge
Euphorbia griffithii  Hook.f. Griffith's spurge
Euphorbia helioscopia  L. sun spurge
Euphorbia hirta  L. asthma-plant
Euphorbia lathyris  L. caper spurge
Euphorbia maculata  L. spotted spurge
Euphorbia mellifera  Aiton Canary spurge
Euphorbia myrsinites  L. broad-leaved glaucous-spurge
Euphorbia paralias  L. sea spurge
Euphorbia peplis  L. purple spurge
Euphorbia peplus  L. petty spurge
Euphorbia platyphyllos  L. broad-leaved spurge
Euphorbia portlandica  L. Portland spurge
Euphorbia segetalis  L. corn spurge
Eurybia macrophylla  (L.) Cass. large-leaved aster
Eurybia schreberi  (Nees) Nees nettle-leaved michaelmas-daisy
Eurybia spectabilis  (Aiton) G.L.Nesom showy aster
Euthamia graminifolia  (L.) Nutt. grass-leaved goldenrod
Fagopyrum esculentum  Moench buckwheat
Fagopyrum tataricum  (L.) Gaertn. green buckwheat
Fagus sylvatica  L. beech
Fallopia baldschuanica  (Regel) Holub Russian-vine
Fallopia convolvulus  (L.) Á.Löve black-bindweed
Fallopia dumetorum  (L.) Holub copse-bindweed
Fargesia murielae  (Gamble) T.P.Yi umbrella bamboo
Fargesia nitida  (Mitford) Keng f. & T.P.Yi Chinese fountain-bamboo
Fatsia japonica  (Thunb.) Decne. & Planch. fatsia
Felicia amelloides  (L.) Voss blue marguerite
Felicia bergeriana  (Spreng.) O.Hoffm. kingfisher daisy
Ferula communis  L. giant fennel
Fessia puschkinioides  (Regel) Speta Russian squill
Festuca altissima  All. wood fescue
Festuca arenaria  Osbeck rush-leaved fescue
Festuca arundinacea  Schreb. tall fescue
Festuca brevipila  R.Tracey hard fescue
Festuca filiformis  Pourr. fine-leaved sheep's-fescue
Festuca gautieri  (Hack.) K.Richt. spiky fescue
Festuca gigantea  (L.) Vill. giant fescue
Festuca heterophylla  Lam. various-leaved fescue
Festuca ovina  L. sheep's-fescue
Festuca pratensis  Huds. meadow fescue
Festuca rubra  L. red fescue
Festuca rubra ssp. commutata  Gaudin Chewing's fescue
Festuca vivipara  (L.) Sm. viviparous sheep's-fescue
x Festulolium loliaceum  (Huds.) P.Fourn. hybrid fescue
Ficaria verna  Huds. lesser celandine
Ficus carica  L. fig
Ficus pumila  L. creeping fig
Filago arvensis  L. field cudweed
Filago germanica  (L.) Huds. common cudweed
Filago minima  (Sm.) Pers. small cudweed
Filipendula camtschatica  (Pall.) Maxim. giant meadowsweet
Filipendula purpurea  Maxim. red meadowsweet
Filipendula rubra  (Hill) B.L.Rob. queen-of-the-prairie
Filipendula ulmaria  (L.) Maxim. meadowsweet
Filipendula vulgaris  Moench dropwort
Foeniculum vulgare  Mill. fennel
Forsythia giraldiana  Lingelsh. early forsythia
Forsythia x intermedia  Zabel forsythia
Forsythia ovata  Nakai Korean forsythia
Forsythia suspensa  (Thunb.) Vahl golden-bell
Fragaria x ananassa  (Weston) Rozier garden strawberry
Fragaria chiloensis  (L.) Weston beach strawberry
Fragaria moschata  Weston hautbois strawberry
Fragaria vesca  L. wild strawberry
Frangula alnus  Mill. alder buckthorn
Frangula purshiana  (DC.) J.G.Cooper cascara sagrada
Frankenia laevis  L. sea-heath
Fraxinus americana  L. white ash
Fraxinus excelsior  L. ash
Fraxinus latifolia  Benth. oregon ash
Fraxinus ornus  L. manna ash
Fraxinus pennsylvanica  Marshall red ash
Freesia x hybrida  L.H.Bailey freesia
Fritillaria meleagris  L. fritillary
Fritillaria pyrenaica  L. pyrenean snake's-head
Fuchsia magellanica  Lam. fuchsia
Fumaria bastardii  Boreau tall ramping-fumitory
Fumaria capreolata  L. white ramping-fumitory
Fumaria densiflora  DC. dense-flowered fumitory
Fumaria muralis  W.D.J.Koch common ramping-fumitory
Fumaria officinalis  L. common fumitory
Fumaria vaillantii  Loisel. few-flowered fumitory
Gagea lutea  (L.) Ker Gawl. yellow star-of-Bethlehem
Gaillardia aristata  Pursh blanket-flower
Gaillardia x grandiflora  Van Houtte blanket-flower
Galanthus elwesii  Hook.f. greater snowdrop
Galanthus nivalis  L. snowdrop
Galanthus plicatus  M.Bieb. pleated snowdrop
Galanthus reginae-olgae  Orph. Queen Olga's snowdrop
Galanthus woronowii  Losinsk. green snowdrop
Galatella linosyris  (L.) Rchb. f. goldilocks aster
Galega officinalis  L. goat's-rue
Galeopsis angustifolia  Hoffm. red hemp-nettle
Galeopsis bifida  Boenn. bifid hemp-nettle
Galeopsis ladanum  L. broad-leaved hemp-nettle
Galeopsis segetum  Neck. downy hemp-nettle
Galeopsis speciosa  Mill. large-flowered hemp-nettle
Galeopsis tetrahit  L. common hemp-nettle
Galinsoga parviflora  Cav. gallant soldier
Galinsoga quadriradiata  Ruiz & Pav. shaggy soldier
Galium aparine  L. cleavers
Galium boreale  L. northern bedstraw
Galium mollugo  L. hedge bedstraw
Galium murale  (L.) All. small goosegrass
Galium odoratum  (L.) Scop. woodruff
Galium palustre  L. common marsh-bedstraw, marsh-bedstraw
Galium pumilum  Murray slender bedstraw
Galium saxatile  L. heath bedstraw
Galium spurium  L. false cleavers
Galium sterneri  Ehrend. limestone bedstraw
Galium tricornutum  Dandy corn cleavers
Galium uliginosum  L. fen bedstraw
Galium verum  L. lady's bedstraw
Gamochaeta purpurea  (L.) Cabrera American cudweed
Garrya elliptica  Lindl. silk-tassel
Gastridium ventricosum  (Gouan) Schinz & Thell. nit-grass
Gaudinia fragilis  (L.) P.Beauv. French oat-grass
Gaultheria mucronata  (L.f.) Hook. & Arn. prickly heath
Gaultheria procumbens  L. checkerberry
Gaultheria shallon  Pursh shallon
Gazania rigens  (L.) Gaertn. treasureflower
Genista aetnensis  (Biv.) DC. Mount Etna broom
Genista anglica  L. petty whin
Genista hispanica  L. Spanish gorse
Genista monspessulana  (L.) L.A.S.Johnson Montpellier broom
Genista pilosa  L. hairy greenweed
Genista radiata  (L.) Scop. southern greenweed
Genista sagittalis  L. winged greenweed
Genista tenera  (Jacq.) Kuntze Madeira broom
Genista tinctoria  L. dyer's greenweed
Gentiana asclepiadea  L. willow gentian
Gentiana clusii  E.P.Perrier & Songeon trumpet gentian
Gentiana cruciata  L. cross gentian
Gentiana nivalis  L. alpine gentian
Gentiana pneumonanthe  L. marsh gentian
Gentiana verna  L. spring gentian
Gentianella amarella  (L.) Börner autumn gentian
Gentianella campestris  (L.) Börner field gentian
Gentianella uliginosa  (Willd.) Börner dune gentian
Geranium carolinianum  L. Carolina crane's-bill
Geranium columbinum  L. long-stalked crane's-bill
Geranium dissectum  L. cut-leaved crane's-bill
Geranium divaricatum  Ehrh. spreading crane's-bill
Geranium endressii  J.Gay French crane's-bill
Geranium himalayense  Klotzsch Himalayan crane's-bill
Geranium ibericum  Cav. Caucasian crane's-bill
Geranium lucidum  L. shining crane's-bill
Geranium macrorrhizum  L. rock crane's-bill
Geranium maderense  Yeo giant herb-Robert
Geranium x magnificum  Hyl. purple crane's-bill
Geranium molle  L. dove's-foot crane's-bill
Geranium x monacense  Harz Munich crane's-bill
Geranium nodosum  L. knotted crane's-bill
Geranium x oxonianum  Yeo Druce's crane's-bill
Geranium phaeum  L. dusky crane's-bill
Geranium platypetalum  Fisch. & C.A.Mey. glandular crane's-bill
Geranium pratense  L. meadow crane's-bill
Geranium psilostemon  Ledeb. Armenian crane's-bill
Geranium pusillum  L. small-flowered crane's-bill
Geranium pyrenaicum  Burm.f. hedgerow crane's-bill
Geranium reflexum  L. reflexed crane's-bill
Geranium robertianum  L. herb-Robert
Geranium rotundifolium  L. round-leaved crane's-bill
Geranium sanguineum  L. bloody crane's-bill
Geranium sylvaticum  L. wood crane's-bill
Geranium versicolor  L. pencilled crane's-bill
Geropogon hybridus  (L.) Sch.Bip. slender salsify
Geum x intermedium  Ehrh. hybrid avens
Geum macrophyllum  Willd. large-leaved avens
Geum quellyon  Sweet scarlet avens
Geum rivale  L. water avens
Geum urbanum  L. wood avens
Gilia capitata  Sims blue-thimble-flower
Gilia tricolor  Benth. bird's-eyes
Ginkgo biloba  L. maidenhair-tree
Gladiolus communis  L. eastern gladiolus
Gladiolus x hortulanus  L.H.Bailey large-flowered gladiolus
Gladiolus illyricus  W.D.J.Koch wild gladiolus
Glandularia x hybrida  (Groenl. & Rümpler) G.L.Nesom & Pruski hybrid vervain
Glaucium corniculatum  (L.) Rudolph red horned-poppy
Glaucium flavum  Crantz yellow horned-poppy
Glaux maritima  L. sea-milkwort
Glebionis carinata  (Schousb.) Tzvelev tricolour chrysanthemum
Glebionis coronaria  (L.) Spach crown daisy
Glebionis segetum  (L.) Fourr. corn marigold
Glechoma hederacea  L. ground-ivy
Glyceria fluitans  (L.) R.Br. floating sweet-grass
Glyceria maxima  (Hartm.) Holmb. reed sweet-grass
Glyceria notata  Chevall. plicate sweet-grass
Glycine max  (L.) Merr. soya-bean
Glycyrrhiza echinata  L. German liquorice
Glycyrrhiza glabra  L. liquorice
Gnaphalium norvegicum  Gunnerus highland cudweed
Gnaphalium supinum  L. dwarf cudweed
Gnaphalium sylvaticum  L. heath cudweed
Gnaphalium uliginosum  L. marsh cudweed
Goodyera repens  (L.) R.Br. creeping lady's-tresses
Gossypium herbaceum  L. Levant cotton
Gossypium hirsutum  L. upland cotton
Gratiola officinalis  L. gratiole
Grindelia chiloensis  (Cornel.) Cabrera shrubby gumweed
Grindelia robusta  Nutt. Californian gumweed
Grindelia squarrosa  (Pursh) Dunal curly-cup gumweed
Griselinia littoralis  (Raoul) Raoul New Zealand broadleaf
Groenlandia densa  (L.) Fourr. opposite-leaved pondweed
Guizotia abyssinica  (L.f.) Cass. niger
Gunnera manicata  Delchev. Brazilian giant-rhubarb
Gunnera tinctoria  (Molina) Mirb. giant-rhubarb
Gymnadenia conopsea  (L.) R.Br. fragrant orchid
Gymnocarpium dryopteris  (L.) Newman oak-fern
Gymnocarpium robertianum  (Hoffm.) Newman limestone fern
Gypsophila elegans  M.Bieb. annual baby's-breath
Gypsophila muralis  L. annual gypsophila
Gypsophila paniculata  L. baby's-breath
Gypsophila repens  L. alpine gypsophila
Hacquetia epipactis  (Scop.) DC. hacquetia
Halimione pedunculata  (L.) Aellen pedunculate sea-purslane
Halimione portulacoides  (L.) Aellen sea purslane
Hammarbya paludosa  (L.) Kuntze bog orchid
Hebe brachysiphon  Summerh. Hooker's hebe
Hebe salicifolia  (G.Forst.) Pennell koromiko
Hedera algeriensis  Hibberd Algerian ivy
Hedera canariensis  Willd. Canary ivy
Hedera colchica  (K.Koch) K.Koch Persian ivy
Hedera helix  L. common ivy
Hedera hibernica  (G.Kirchn.) Carrière Atlantic ivy
Hedypnois rhagadioloides  (L.) F.W.Schmidt scaly hawkbit
Helenium autumnale  L. sneezeweed
Helianthemum apenninum  (L.) Mill. white rock-rose
Helianthemum nummularium  (L.) Mill. common rock-rose
Helianthus angustifolius  L. swamp sunflower
Helianthus annuus  L. sunflower
Helianthus argophyllus  Torr. & A.Gray silver-leaf sunflower
Helianthus decapetalus  L. thin-leaved sunflower
Helianthus divaricatus  L. rough sunflower
Helianthus x laetiflorus  Pers. perennial sunflower
Helianthus maximilianii  Schrad. Maximilian's sunflower
Helianthus x multiflorus  L. thin-leaved sunflower
Helianthus petiolaris  Nutt. lesser sunflower
Helianthus strumosus  L. pale-leaved sunflower
Helianthus tuberosus  L. Jerusalem artichoke
Helichrysum italicum  (Roth) G.Don curry-plant
Helichrysum petiolare  Hilliard & B.L.Burtt silver-bush everlastingflower
Helictochloa pratensis  (L.) Romero Zarco meadow oat-grass
Heliopsis helianthoides  (L.) Sweet rough oxeye
Heliosperma alpestre  (Jacq.) Rchb. alpine campion
Heliotropium arborescens  L. cherry-pie
Heliotropium curassavicum  L. seaside heliotrope
Heliotropium europaeum  L. European turn-sole
Helleborus argutifolius  Viv. Corsican hellebore
Helleborus foetidus  L. stinking hellebore
Helleborus x hybridus  Voss hybrid Lenten-rose
Helleborus orientalis  Lam. Lenten-rose
Helleborus viridis  L. green hellebore
Helminthotheca echioides  (L.) Holub bristly oxtongue
Helosciadium inundatum  (L.) W.D.J.Koch lesser marshwort
Helosciadium nodiflorum  (L.) W.D.J.Koch fool's water-cress
Helosciadium repens  (Jacq.) W.J.D.Koch creeping marshwort
Hemerocallis citrina  Baroni citron day-lily
Hemerocallis fulva  (L.) L. orange day-lily
Hemerocallis lilioasphodelus  L. yellow day-lily
Hepatica nobilis  Schreb. liverleaf
Heracleum mantegazzianum  Sommier & Levier giant hogweed
Heracleum sphondylium  L. hogweed
Herminium monorchis  (L.) R.Br. musk orchid
Herniaria glabra  L. smooth rupturewort
Herniaria hirsuta  L. hairy rupturewort
Hesperantha coccinea  (Backh. & Harv.) Goldblatt & J.C.Manning kaffir lily
Hesperis matronalis  L. dame's-violet
Heuchera sanguinea  Engelm. coralbells
Hibiscus syriacus  L. Syrian ketmia
Hibiscus trionum  L. bladder ketmia
Hierochloe odorata  (L.) P.Beauv. holy-grass
Himantoglossum hircinum  (L.) Spreng. lizard orchid
Hippocrepis comosa  L. horseshoe vetch
Hippocrepis emerus  (L.) Lassen scorpion senna
Hippophae rhamnoides  L. sea-buckthorn
Hippuris vulgaris  L. mare's-tail
Hirschfeldia incana  (L.) Lagr.-Foss. hoary mustard
Holcus lanatus  L. Yorkshire-fog
Holcus mollis  L. creeping soft-grass
Holodiscus discolor  (Pursh) Maxim. oceanspray
Holosteum umbellatum  L. jagged chickweed
Homogyne alpina  (L.) Cass. purple colt's-foot
Honckenya peploides  (L.) Ehrh. sea sandwort
Hordelymus europaeus  (L.) Harz wood barley
Hordeum euclaston  Steud. Argentine barley
Hordeum jubatum  L. foxtail barley
Hordeum marinum  Huds. sea barley
Hordeum marinum ssp. gussoneanum  (Parl.) Thell. Mediterranean barley
Hordeum murinum  L. wall barley
Hordeum pubiflorum  Hook.f. Antarctic barley
Hordeum pusillum  Nutt. little barley
Hordeum secalinum  Schreb. meadow barley
Hordeum vulgare Distichon-Gruppen   two-rowed barley
Hordeum vulgare Hexastichon-Gruppen   six-rowed barley
Hornungia petraea  (L.) Rchb. hutchinsia
Hosta lancifolia  (Thunb.) Engl. narrow-leaved plantain-lily
Hosta ventricosa  Stearn blue plantain-lily
Hottonia palustris  L. water-violet
Hugueninia tanacetifolia  (L.) Rchb. tansey-leaved rocket
Humulus japonicus  Siebold & Zucc. Japanese hop
Humulus lupulus  L. hop
Huperzia selago  (L.) Schrank & Mart. fir clubmoss
Hyacinthoides hispanica  (Mill.) Rothm. Spanish bluebell
Hyacinthoides italica  (L.) Rothm. Italian bluebell
Hyacinthoides non-scripta  (L.) Rothm. bluebell
Hyacinthus orientalis  L. hyacinth
Hydrangea macrophylla  (Thunb.) Ser. hydrangea
Hydrilla verticillata  (L.f.) Royle hydrilla
Hydrocharis morsus-ranae  L. frogbit
Hydrocleys nymphoides  (Willd.) Buchenau water-poppy
Hydrocotyle moschata  Forst.f. hairy pennywort
Hydrocotyle ranunculoides  L.f. floating pennywort
Hydrocotyle vulgaris  L. marsh pennywort
Hylotelephium anacampseros  (L.) H.Ohba love-restoring stonecrop
Hylotelephium 'Herbstfreude'   autumn stonecrop
Hylotelephium spectabile  (Boreau) H.Ohba butterfly stonecrop
Hylotelephium telephium  (L.) H.Ohba orpine
Hyoscyamus albus  L. white henbane
Hyoscyamus aureus  L. golden henbane
Hyoscyamus niger  L. henbane
Hypericum androsaemum  L. tutsan
Hypericum calycinum  L. rose of Sharon
Hypericum elodes  L. marsh St John's-wort
Hypericum forrestii  (Chitt.) N.Robson Forrest's tutsan
Hypericum hircinum  L. stinking tutsan
Hypericum x inodorum  Mill. tall tutsan
Hypericum maculatum  Crantz imperforate St John's-wort
Hypericum perforatum  L. perforate St John's-wort
Hypericum pseudohenryi  N.Robson Irish tutsan
Hypericum pulchrum  L. slender St John's-wort
Hypericum tetrapterum  Fr. square-stalked St John's-wort
Hypochaeris glabra  L. smooth cat's-ear
Hypochaeris maculata  L. spotted cat's-ear
Hypochaeris radicata  L. cat's-ear
Hyssopus officinalis  L. hyssop
Iberis amara  L. wild candytuft
Iberis sempervirens  L. perennial candytuft
Iberis umbellata  L. garden candytuft
Ilex x altaclerensis  (Loudon) Dallim. Highclere holly
Ilex aquifolium  L. holly
Illecebrum verticillatum  L. coral-necklace
Impatiens balfourii  Hook.f. Kashmir balsam
Impatiens balsamina  L. balsam
Impatiens capensis  Meerb. orange balsam
Impatiens glandulifera  Royle Indian balsam
Impatiens parviflora  DC. small balsamin
Inula britannica  L. meadow fleabane
Inula conyzae  (Griess.) Meikle ploughman's spikenard
Inula crithmoides  L. golden samphire
Inula helenium  L. elecampane
Inula magnifica  Lipsky giant fleabane
Inula oculus-christi  L. hairy fleabane
Inula salicina  L. Irish fleabane
Iochroma australe  Griseb. argentine-pear
Ionopsidium acaule  (Desf.) Rchb. violet cress
Ipheion uniflorum  (Lindl.) Raf. spring starflower
Ipomoea batatas  (L.) Lam. sweet potato
Ipomoea hederacea  Jacq. ivy-leaved morning-glory
Ipomoea purpurea  (L.) Roth common morning-glory
Ipomoea tricolor  Cav. morning-glory
Iris ensata  Thunb. beaked iris
Iris foetidissima  L. stinking iris
Iris germanica  L. bearded iris
Iris x hollandica  Bergmans Dutch iris
Iris laevigata  Fisch. Japanese iris
Iris latifolia  (Mill.) Voss English iris
Iris orientalis  Mill. Turkish iris
Iris pseudacorus  L. yellow iris
Iris pumila  L. pygmy iris
Iris x robusta  E.S.Anderson Windermere iris
Iris sibirica  L. Sibirian iris
Iris soforana  Foster mourning iris
Iris spuria  L. blue iris
Iris tuberosa  L. snake's-head iris
Iris unguicularis  Poir. Algerian iris
Iris versicolor  L. purple iris
Iris xiphium  L. Spanish iris
Isatis tinctoria  L. woad
Isoetes echinospora  Durieu spring quillwort
Isoetes histrix  Bory land quillwort
Isoetes lacustris  L. quillwort
Isolepis cernua  (Vahl) Roem. & Schult. slender club-rush
Isolepis setacea  (L.) R.Br. bristle club-rush
Isopyrum thalictroides  L. isopyrum
Ixia campanulata  Houtt. red corn-lily
Ixia paniculata  D.Delaroche tubular corn-lily
Jacobaea aquatica  (Hill) G.Gaertn. & al. marsh ragwort
Jacobaea erucifolia  (L.) G.Gaertn. & al. hoary ragwort
Jacobaea maritima  (L.) Pelser & Meijden silver ragwort
Jacobaea vulgaris  Gaertn. common ragwort
Jasione montana  L. sheep's-bit
Jasminum beesianum  Forrest & Diels red jasmine
Jasminum humile  L. Italian jasmine
Jasminum nudiflorum  Lindl. winter jasmine
Jasminum officinale  L. summer jasmine
Juglans nigra  L. black walnut
Juglans regia  L. walnut
Juncus alpinoarticulatus  Chaix alpine rush
Juncus articulatus  L. jointed rush
Juncus balticus  Willd. Baltic rush
Juncus biglumis  L. two-flowered rush
Juncus bufonius  L. toad rush
Juncus bulbosus  L. bulbous rush
Juncus capitatus  Weigel dwarf rush
Juncus castaneus  Sm. chestnut rush
Juncus compressus  Jacq. round-fruited rush
Juncus conglomeratus  L. compact rush
Juncus effusus  L. soft-rush
Juncus ensifolius  Wikstr. sword-leaved rush
Juncus filiformis  L. thread rush
Juncus foliosus  Desf. leafy rush
Juncus gerardi  Loisel. saltmarsh rush
Juncus inflexus  L. hard rush
Juncus pallidus  R.Br. great soft-rush
Juncus planifolius  R.Br. broad-leaved rush
Juncus squarrosus  L. heath rush
Juncus subnodulosus  Schrank blunt-flowered rush
Juncus tenuis  Willd. slender rush
Juncus trifidus  L. three-leaved rush
Juncus triglumis  L. three-flowered rush
Juniperus chinensis  L. Chinese juniper
Juniperus communis  L. common juniper, juniper
Juniperus communis var. saxatilis  Pall. dwarf juniper
Juniperus virginiana  L. Virginian juniper
Kalanchoe blossfeldiana  Poelln. flaming Katy
Kalmia angustifolia  L. sheep-laurel
Kalmia latifolia  L. mountain-laurel
Kalmia polifolia  Wangenh. bog-laurel
Kalmia procumbens  (L.) Galasso & al. trailing azalea
Kernera saxatilis  (L.) Sweet kernera
Kerria japonica  (L.) DC. kerria
Kickxia elatine  (L.) Dumort. sharp-leaved fluellen
Kickxia spuria  (L.) Dumort. round-leaved fluellen
Knautia arvensis  (L.) Coult. field scabious
Kniphofia praecox  Baker greater red-hot-poker
Kniphofia uvaria  (L.) Oken red-hot-poker
Koeleria macrantha  (Ledeb.) Schult. crested hair-grass
Koeleria vallesiana  (Honck.) Schult. Somerset hair-grass
Koelreuteria paniculata  Laxm. pride-of-India
Koenigia islandica  L. Iceland-purslane
Kolkwitzia amabilis  Graebn. beauty-bush
Kyllinga brevifolia  Rottb. globe kyllinga
Lablab purpureus  (L.) Sweet lablab-bean
Laburnum alpinum  (Mill.) Bercht. & J.Presl Scottish laburnum
Laburnum anagyroides  Medik. laburnum
Lachnagrostis filiformis  (G.Forst.) Trin. blown-grass
Lachnagrostis lachnantha  (Nees) Rúgolo & A.M.Molina African bent
Lactuca alpina  (L.) A.Gray alpine blue-sow-thistle
Lactuca macrophylla  (Willd.) A.Gray common blue-sow-thistle
Lactuca muralis  (L.) G.Mey. wall lettuce
Lactuca perennis  L. mountain lettuce
Lactuca plumieri  (L.) Gren. & Godr. hairless blue-sow-thistle
Lactuca sativa  L. garden lettuce
Lactuca serriola  L. prickly lettuce
Lactuca tatarica  (L.) C.A.Mey. blue lettuce
Lactuca virosa  L. great lettuce
Lagarosiphon major  (Ridl.) Moss curly waterweed
Lagenaria siceraria  (Molina) Standl. white-flowered gourd
Lagurus ovatus  L. hare's-tail
Lamarckia aurea  (L.) Moench golden dog's-tail
Lamium album  L. white dead-nettle
Lamium amplexicaule  L. henbit dead-nettle
Lamium confertum  Fr. northern dead-nettle
Lamium galeobdolon  (L.) Crantz yellow archangel
Lamium maculatum  L. spotted dead-nettle
Lamium orvala  L. balm-leaved archangel
Lamium purpureum  L. red dead-nettle
Lamium purpureum var. incisum  (Willd.) Pers. cut-leaved dead-nettle
Lampranthus roseus  (Willd.) Schwantes rosy dewplant
Lampranthus spectabilis  (Haw.) N.E.Br. Asian bleeding-heart
Lappula deflexa  (Wahlenb.) Garcke nodding stickseed
Lappula squarrosa  (Retz.) Dumort. bur forget-me-not
Lapsana communis  L. nipplewort
Larix decidua  Mill. European larch
Larix gmelinii  (Rupr.) Kuzen. Dahurian larch
Larix kaempferi  (Lamb.) Carrière Japanese larch
Larix laricina  (Du Roi) K.Koch American larch
Larix x marschlinsii  Coaz hybrid larch
Laser trilobum  (L.) Borkh. laser
Laserpitium latifolium  L. broad-leaved sermountain
Lasthenia glabrata  Lindl. yellow-rayed lasthenia
Lathraea squamaria  L. toothwort
Lathyrus angulatus  L. angular pea
Lathyrus annuus  L. fodder pea
Lathyrus aphaca  L. yellow vetchling
Lathyrus cicera  L. red vetchling
Lathyrus grandiflorus  Sibth. & Sm. two-flowered everlasting-pea
Lathyrus heterophyllus  L. Norfolk everlasting-pea
Lathyrus hirsutus  L. hairy vetchling
Lathyrus latifolius  L. broad-leaved everlasting-pea
Lathyrus linifolius  (Reichard) Bässler bitter-vetch
Lathyrus niger  (L.) Bernh. black pea
Lathyrus nissolia  L. grass vetchling
Lathyrus ochrus  (L.) DC. winged vetchling
Lathyrus odoratus  L. sweet pea
Lathyrus palustris  L. marsh pea
Lathyrus pratensis  L. meadow vetchling
Lathyrus rotundifolius  Willd. round-leaved vetchling
Lathyrus sativus  L. Indian pea
Lathyrus setifolius  L. brown vetchling
Lathyrus sphaericus  Retz. round-seeded vetchling
Lathyrus sylvestris  L. narrow-leaved everlasting-pea
Lathyrus tingitanus  L. Tangier pea
Lathyrus tuberosus  L. tuberous pea
Laurus nobilis  L. bay
Lavandula angustifolia  Mill. garden lavender
Lavandula x intermedia  Loisel. hybrid lavender
Lavandula latifolia  Medik. broad-leaved lavender
Layia chrysanthemoides  (DC.) A.Gray smooth layia
Leersia oryzoides  (L.) Sw. cut-grass
Legousia hybrida  (L.) Delarbre Venus's-looking-glass
Legousia speculum-veneris  (L.) Chaix large Venus's-looking-glass
Lemna gibba  L. fat duckweed
Lemna minor  L. common duckweed
Lemna minuta  Kunth least duckweed
Lemna trisulca  L. ivy-leaved duckweed
Lens culinaris  Medik. lentil
Leontodon hispidus  L. rough hawkbit
Leontodon saxatilis  Lam. lesser hawkbit
Leontopodium nivale ssp. alpinum  (Cass.) Greuter edelweiss
Leonurus cardiaca  L. motherwort
Lepidium campestre  (L.) R.Br. field pepperwort
Lepidium coronopus  (L.) Al-Shehbaz swine-cress
Lepidium didymum  L. lesser swine-cress
Lepidium draba  L. hoary cress
Lepidium graminifolium  L. tall pepperwort
Lepidium heterophyllum  Benth. Smith's pepperwort
Lepidium latifolium  L. dittander
Lepidium perfoliatum  L. perfoliate pepperwort
Lepidium ruderale  L. narrow-leaved pepperwort
Lepidium sativum  L. garden cress
Lepidium virginicum  L. least pepperwort
Leptinella dioica  Hook.f. hairless leptinella
Leptinella squalida  Hook.f. leptinella
Leptochloa fusca  (L.) Kunth brown beetle-grass
Leptospermum lanigerum  (Aiton) Sm. woolly tea-tree
Leptospermum scoparium  J.R.Forst. & G.Forst. broom tea-tree
Leptospermum sericeum  Labill. swamp tea-tree
Leucanthemella serotina  (L.) Tzvelev autumn oxeye
Leucanthemum atratum  (Jacq.) DC. saw-leaved moon-daisy
Leucanthemum lacustre  (Brot.) Samp. Portuguese swamp-daisy
Leucanthemum x superbum  (Bergmans) D.H.Kent Shasta daisy
Leucanthemum vulgare  Lam. oxeye daisy
Leucojum aestivum  L. summer snowflake
Leucojum vernum  L. spring snowflake
Leucothoe fontanesiana  (Steud.) Sleumer fetter-bush
Levisticum officinale  W.D.J.Koch lovage
Leycesteria formosa  Wall. Himalayan honeysuckle
Leymus arenarius  (L.) Hochst. lyme-grass
Libertia chilensis  (Molina) Gunckel Chilean-iris, lesser Chilean-iris
Ligularia dentata  (A.Gray) Hara leopardplant
Ligularia przewalskii  (Maxim.) Diels Przewalski's leopardplant
Ligusticum scothicum  L. Scots lovage
Ligustrum lucidum  Aiton tree privet
Ligustrum ovalifolium  Hassk. garden privet
Ligustrum sinense  Lour. Chinese privet
Ligustrum vulgare  L. wild privet
Lilium bulbiferum  L. orange-lily
Lilium canadense  L. Canada lily
Lilium candidum  L. madonna lily
Lilium martagon  L. martagon lily
Lilium monadelphum  M.Bieb. Caucasian lily
Lilium pyrenaicum  Gouan Pyrenean lily
Lilium regale  E.H.Wilson royal lily
Limnanthes douglasii  R.Br. meadow foam
Limonium bellidifolium  (Gouan) Dumort. matted sea-lavender
Limonium humile  Mill. lax-flowered sea-lavender
Limonium platyphyllum  Lincz. florist's sea-lavender
Limonium sinuatum  (L.) Mill. statice
Limonium sinuatum ssp. bonduellei  (T.Lestib.) Sauvage & Vindt Algerian statice
Limonium vulgare  Mill. common sea-lavender
Limosella aquatica  L. mudwort
Linaria arenaria  DC. sand toadflax
Linaria arvensis  (L.) Desf. corn toadflax
Linaria dalmatica  (L.) Mill. Balkan toadflax
Linaria purpurea  (L.) Mill. purple toadflax
Linaria repens  (L.) Mill. pale toadflax
Linaria supina  (L.) Chaz. prostrate toadflax
Linaria vulgaris  Mill. common toadflax
Linnaea borealis  L. twinflower
Linum bienne  Mill. pale flax
Linum catharticum  L. fairy flax
Linum grandiflorum  Desf. crimson flax
Linum perenne  L. perennial flax
Linum suffruticosum  L. white flax
Linum usitatissimum  L. flax
Lipandra polysperma  (L.) S.Fuentes & al. many-seeded goosefoot
Liparis loeselii  (L.) Rich. fen orchid
Liriodendron tulipifera  L. tulip-tree
Lithospermum officinale  L. common gromwell
Lloydia serotina  (L.) Rchb. Snowdon lily
Lobelia angulata  G.Forst. lawn lobelia
Lobelia dortmanna  L. water lobelia
Lobelia erinus  L. garden lobelia
Lobelia siphilitica  L. great lobelia
Lobelia urens  L. heath lobelia
Lobularia maritima  (L.) Desv. sweet alison
Lolium multiflorum  Lam. Italian rye-grass
Lolium perenne  L. perennial rye-grass
Lolium remotum  Schrank flaxfield rye-grass
Lolium temulentum  L. darnel
Lonicera alpigena  L. alpine honeysuckle
Lonicera caerulea  L. blue-berried honeysuckle
Lonicera caprifolium  L. perfoliate honeysuckle
Lonicera etrusca  Santi Etruscan honeysuckle
Lonicera henryi  Hemsl. Henry's honeysuckle
Lonicera x italica  Tausch garden honeysuckle
Lonicera japonica  Thunb. Japanese honeysuckle
Lonicera morrowii  A.Gray Morrow's honeysuckle
Lonicera nitida  E.H.Wilson Wilson's honeysuckle
Lonicera periclymenum  L. honeysuckle
Lonicera pileata  Oliv. box-leaved honeysuckle
Lonicera rupicola var. syringantha  (Maxim.) Zabel lilac-scented honeysuckle
Lonicera tatarica  L. Tartarian honeysuckle
Lonicera xylosteum  L. fly honeysuckle
Lopezia racemosa  Cav. crown-jewels
Lotus angustissimus  L. slender bird's-foot-trefoil
Lotus corniculatus  L. common bird's-foot-trefoil
Lotus creticus  L. Cretan bird's-foot-trefoil
Lotus jacobaeus  L. St James' trefoil
Lotus maritimus  L. dragon's-teeth
Lotus pedunculatus  Cav. greater bird's-foot-trefoil
Lotus tenuis  Willd. narrow-leaved bird's-foot-trefoil
Lotus tetragonolobus  L. asparagus-pea
Ludwigia grandiflora  (Michx.) Greuter & Burdet Uruguayan Hampshire-purslane
Ludwigia x mulerttii  Mulertt false Hampshire-purslane
Ludwigia palustris  (L.) Elliott Hampshire-purslane
Lunaria annua  L. honesty
Lunaria rediviva  L. perennial honesty
Lupinus albus  L. white lupin
Lupinus angustifolius  L. narrow-leaved lupin
Lupinus arboreus  Sims tree lupin
Lupinus luteus  L. annual yellow-lupin
Lupinus micranthus  Guss. bitter blue-lupin
Lupinus nootkatensis  Sims Nootka lupin
Lupinus polyphyllus  Lindl. garden lupin
Lupinus x regalis  Bergmans Russell lupin
Luronium natans  (L.) Raf. floating water-plantain
Luzula arcuata  (Wahlenb.) Sw. curved wood-rush
Luzula campestris  (L.) DC. field wood-rush
Luzula luzuloides  (Lam.) Dandy & Wilmott white wood-rush
Luzula multiflora  (Ehrh.) Lej. heath wood-rush
Luzula nivea  (L.) DC. snow-white wood-rush
Luzula pilosa  (L.) Willd. hairy wood-rush
Luzula spicata  (L.) DC. spiked wood-rush
Luzula sylvatica  (Huds.) Gaudin great wood-rush
Lychnis chalcedonica  L. Maltese-cross
Lychnis coronaria  (L.) Desr. rose campion
Lychnis flos-cuculi  L. ragged-robin
Lychnis flos-jovis  (L.) Desr. flower-of-Jove
Lycium barbarum  L. Duke of Argyll's teaplant
Lycium chinense  Mill. Chinese teaplant
Lycopodiella inundata  (L.) Holub marsh clubmoss
Lycopodium alpinum  L. alpine clubmoss
Lycopodium annotinum  L. interrupted clubmoss
Lycopodium clavatum  L. stag's-horn clubmoss
Lycopus europaeus  L. gypsywort
Lysichiton americanus  Hultén & H.St.John American skunk-cabbage
Lysichiton camtschatcensis  (L.) Schott Asian skunk-cabbage
Lysimachia ciliata  L. fringed loosestrife
Lysimachia nemorum  L. yellow pimpernel
Lysimachia nummularia  L. creeping-Jenny
Lysimachia punctata  L. dotted loosestrife
Lysimachia quadrifolia  L. whorled loosestrife
Lysimachia terrestris  (L.) Britton & al. lake loosestrife
Lysimachia thyrsiflora  L. tufted loosestrife
Lysimachia vulgaris  L. yellow loosestrife
Lythrum hyssopifolia  L. grass-poly
Lythrum junceum  Banks & Sol. false grass-poly
Lythrum portula  (L.) D.A.Webb water-purslane
Lythrum salicaria  L. purple-loosestrife
Macleaya cordata  (Willd.) R.Br. five-seeded plume-poppy
Macleaya x kewensis  Turrill hybrid plume-poppy
Madia sativa  Molina coast tarweed
Magnolia acuminata  (L.) L. cucumber-tree
Mahonia aquifolium  (Pursh) Nutt. Oregon-grape
Maianthemum bifolium  (L.) F.W.Schmidt May lily
Maianthemum dilatatum  (Alph.Wood) A.Nelson & J.F Macbr. false lily-of-the-valley
Maianthemum stellatum  (L.) Link star-flowered lily-of-the-valley
Malcolmia maritima  (L.) W.T.Aiton Virginia stock
Malope trifida  Cav. mallow-wort
Malus baccata  (L.) Borkh. Siberian crab
Malus domestica  (Suckow) Borkh. apple
Malus floribunda  Van Houtte Japanese crab
Malus hupehensis  (Pamp.) Rehder Hupeh crab
Malus prunifolia  (Willd.) Borkh. plum-leaved apple
Malus spectabilis  (Aiton) Borkh. Chinese crab
Malva alcea  L. greater musk-mallow
Malva arborea  (L.) Webb & Berthel. tree-mallow
Malva cachemiriana  (Cambess.) Alef. wild hollyhock
Malva x clementii  (Cheek) Stace garden tree-mallow
Malva moschata  L. musk-mallow
Malva multiflora  (Cav.) Soldano & al. smaller tree-mallow
Malva neglecta  Wallr. dwarf mallow
Malva nicaeensis  All. French mallow
Malva parviflora  L. least mallow
Malva punctata  (All.) Alef. spotted-stalked tree-mallow
Malva pusilla  Sm. small mallow
Malva subovata  (DC.) Molero & J.M Monts. sea mallow
Malva sylvestris  L. common mallow
Malva trimestris  (L.) Salisb. royal mallow
Malva verticillata  L. Chinese mallow
Malvastrum coromandelianum  (L.) Garcke broomweed
Mangifera indica  L. mango
Marrubium vulgare  L. white horehound
Matricaria chamomilla  L. scented mayweed
Matricaria discoidea  DC. pineappleweed
Matteuccia struthiopteris  (L.) Tod. ostrich fern
Matthiola fruticulosa  (L.) Maire sad stock
Matthiola incana  (L.) R.Br. hoary stock
Matthiola sinuata  (L.) R.Br. sea stock
Medicago arabica  (L.) Huds. spotted medick
Medicago arborea  L. tree medick
Medicago intertexta  (L.) Mill. hedgehog medick
Medicago laciniata  (L.) Mill. tattered medick
Medicago littoralis  Loisel. shore medick
Medicago lupulina  L. black medick
Medicago marina  L. sea medick
Medicago minima  (L.) Bartal. bur medick
Medicago monspeliaca  (L.) Trautv. star-fruited fenugreek
Medicago orbicularis  (L.) Bartal. button medick
Medicago polymorpha  L. toothed medick
Medicago praecox  DC. early medick
Medicago sativa  L. lucerne
Medicago sativa ssp. falcata  (L.) Arcang. sickle medick
Medicago sativa ssp. x media  (Pers.) Schübl. & M.Martens sandlucerne
Medicago scutellata  (L.) Mill. snail medick
Medicago truncatula  Gaertn. strong-spined medick
Melampyrum arvense  L. field cow-wheat
Melampyrum cristatum  L. crested cow-wheat
Melampyrum pratense  L. common cow-wheat
Melampyrum sylvaticum  L. small cow-wheat
Melica nutans  L. mountain melick
Melica uniflora  Retz. wood melick
Melilotus albus  Medik. white melilot
Melilotus altissimus  Thuill. tall melilot
Melilotus indicus  (L.) All. small melilot
Melilotus officinalis  (L.) Lam. ribbed melilot
Melilotus siculus  (Turra) B.D.Jacks. Sicilian melilot
Melilotus sulcatus  Desf. furrowed melilot
Melissa officinalis  L. balm
Melittis melissophyllum  L. bastard balm
Mentha aquatica  L. water mint
Mentha arvensis  L. corn mint
Mentha x gracilis  Sole bushy mint
Mentha longifolia  (L.) Huds. horse mint
Mentha x piperita  L. peppermint
Mentha pulegium  L. pennyroyal
Mentha requienii  Benth. Corsican mint
Mentha x rotundifolia  (L.) Huds. false apple-mint
Mentha spicata  L. spear mint
Mentha suaveolens  Ehrh. round-leaved mint
Mentha x verticillata  L. whorled mint
Mentha x villosa  Huds. apple-mint
Mentha x wirtgeniana  F.W.Schultz tall mint
Mentzelia lindleyi  Torr. & A.Gray golden bartonia
Menyanthes trifoliata  L. bogbean
Mercurialis annua  L. annual mercury
Mercurialis perennis  L. dog's mercury
Mertensia maritima  (L.) Gray oysterplant
Mertensia virginica  (L.) Link Virginia-bluebells
Mesembryanthemum crystallinum  L. common iceplant
Mespilus germanica  L. medlar
Metasequoia glyptostroboides  Hu & W.C.Cheng dawn redwood
Meum athamanticum  Jacq. spignel
Microsorum pustulatum  (G.Forst.) Copel. kangaroo fern
Milium effusum  L. wood millet
Milium vernale  M.Bieb. early millet
Mimulus ringens  L. Allegheny monkeyflower
Minuartia recurva  (All.) Schinz & Thell. recurved sandwort
Mirabilis jalapa  L. marvel-of-Peru
Misopates calycinum  (Vent.) Rothm. pale weasel's-snout
Misopates orontium  (L.) Raf. weasel's-snout
Mitella caulescens  Nutt. star-shaped mitrewort
Mitella diphylla  L. two-leaved mitrewort
Modiola caroliniana  (L.) D.Don bristly-fruited mallow
Moehringia trinervia  (L.) Clairv. three-veined sandwort
Moenchia erecta  (L.) P. Gaertn. & al. upright chickweed
Molinia caerulea  (L.) Moench purple moor-grass
Moluccella laevis  L. bells-of-Ireland
Momordica charantia  L. balsam-pear
Moneses uniflora  (L.) A.Gray one-flowered wintergreen
Monotropa hypopitys  L. yellow bird's-nest
Montia fontana  L. blinks
Montiopsis umbellata  (Ruiz & Pav.) D.I.Ford rock purslane
Moraea collina  Thunb. Cape-tulip
Morella pensylvanica  (Mirb.) Kartesz bayberry
Moricandia arvensis  (L.) DC. violet cabbage
Morina longifolia  DC. whorl-flower
Morus alba  L. white mulberry
Morus nigra  L. black mulberry
Muehlenbeckia complexa  (A.Cunn.) Meisn. wireplant
Muscari armeniacum  Baker garden grape-hyacinth
Muscari botryoides  (L.) Mill. compact grape-hyacinth
Muscari comosum  (L.) Mill. tassel hyacinth
Muscari neglectum  Ten. grape-hyacinth
Myagrum perfoliatum  L. mitre cress
Myosotis alpestris  F.W.Schmidt alpine forget-me-not
Myosotis arvensis  (L.) Hill field forget-me-not
Myosotis discolor  Pers. changing forget-me-not
Myosotis laxa ssp. caespitosa  (Schultz) Nordh. tufted forget-me-not
Myosotis ramosissima  Rochel early forget-me-not
Myosotis scorpioides  L. water forget-me-not
Myosotis sylvatica  Hoffm. wood forget-me-not
Myosoton aquaticum  (L.) Moench water chickweed
Myosurus minimus  L. mousetail
Myrica gale  L. bog-myrtle
Myriophyllum alterniflorum  DC. alternate water-milfoil
Myriophyllum aquaticum  (Vell.) Verdc. parrot's-feather
Myriophyllum heterophyllum  Michx. various-leaved water-milfoil
Myriophyllum spicatum  L. spiked water-milfoil
Myriophyllum verrucosum  Lindl. red water-milfoil
Myriophyllum verticillatum  L. whorled water-milfoil
Myrrhis odorata  (L.) Scop. sweet cicely
Myrsine africana  L. African boxwood
Najas flexilis  (Willd.) Rostk. & W.L.E.Schmidt slender naiad
Najas marina  L. holly-leaved naiad
Narcissus bulbocodium  L. hoop-petticoat daffodil
Narcissus cyclamineus  DC. cyclamen-flowered daffodil
Narcissus x cyclazetta  Chater & Stace head-to-head daffodil
Narcissus x incomparabilis  Mill. nonesuch daffodil
Narcissus x intermedius  Loisel. intermediate jonquil
Narcissus jonquilla  L. jonquil
Narcissus x medioluteus  Mill. primrose-peerless
Narcissus minor  L. lesser daffodil
Narcissus x monochromus  P.D.Sell reflexed daffodil
Narcissus moschatus  L. white daffodil
Narcissus x odorus  L. campernelle jonquil, hybrid jonquil
Narcissus papyraceus  Ker Gawl. paper-white daffodil
Narcissus poeticus  L. pheasant's-eye daffodil
Narcissus pseudonarcissus  L. daffodil
Narcissus pseudonarcissus ssp. bicolor  (L.) Baker two-coloured daffodil
Narcissus pseudonarcissus ssp. major  (Curtis) Baker Spanish daffodil
Narcissus pseudonarcissus ssp. nobilis  (Haw.) A.Fern. large-flowered daffodil
Narcissus pseudonarcissus 'Obvallaris'   Tenby daffodil
Narcissus tazetta  L. bunch-flowered daffodil
Narcissus triandrus  L. Angel's tears
Nardus stricta  L. mat-grass
Narthecium ossifragum  (L.) Huds. bog asphodel
Nassella neesiana  (Trin. & Rupr.) Barkworth American needle-grass
Nassella tenuissima  (Trin.) Barkworth Argentine needle-grass
Nasturtium microphyllum  Rchb. narrow-fruited water-cress
Nasturtium officinale  R.Br. water-cress
Nasturtium x sterile  (Airy Shaw) Oefelein hybrid water-cress
Neillia incisa  (Thunb.) S.H.Oh lace-shrub
Nemesia strumosa  Benth. Cape-jewels
Nemophila maculata  Lindl. five spot
Nemophila menziesii  Hook. & Arn. baby's-blue-eyes
Neotinea ustulata  (L.) R.M.Bateman & al. burnt orchid
Neottia cordata  (L.) Rich. lesser twayblade
Neottia nidus-avis  (L.) Rich. bird's-nest orchid
Neottia ovata  (L.) Bluff & Fingerh. common twayblade
Nepeta cataria  L. cat-mint
Nepeta x faassenii  Stearn garden cat-mint
Nepeta nepetella  L. lesser cat-mint
Nepeta nuda  L. hairless cat-mint
Nerine sarniensis  (L.) Herb. Guernsey lily
Nertera granadensis  (L.f.) Druce beadplant
Neslia paniculata  (L.) Desv. ball mustard
Nicandra physalodes  (L.) Gaertn. apple-of-Peru
Nicotiana alata  Link & Otto sweet tobacco
Nicotiana forgetiana  Hemsl. red tobacco
Nicotiana glauca  Graham tree tobacco
Nicotiana longiflora  Cav. long-flowered tobacco
Nicotiana rustica  L. wild tobacco
Nicotiana suaveolens  Lehm. Australian tobacco
Nicotiana tabacum  L. tobacco
Nigella arvensis  L. nigella
Nigella damascena  L. love-in-a-mist
Nigella hispanica  L. fennel-flower
Nigella sativa  L. black-cumin
Nitella flexilis  (L.) C.Agardh smooth stonewort
Noccaea caerulescens  (J.Presl & C.Presl) F.K.Mey. alpine penny-cress
Noccaea perfoliata  (L.) Al-Shehbaz perfoliate penny-cress
Nolana humifusa  (Gouan) I.M.Johnst. trailing Chilean-bellflower
Nolana paradoxa  Lindl. Chilean-bellflower
Nonea lutea  (Desr.) DC. yellow nonea
Nonea pulla  (L.) DC. brown nonea
Nonea rosea  (M.Bieb.) Link pink nonea
Nothofagus alpina  (Poepp. & Endl.) Oerst. rauli
Nothofagus antarctica  (G.Forst.) Oerst. Antarctic beech
Nothofagus obliqua  (Mirb.) Oerst. roble
Nothoscordum borbonicum  Kunth honeybells
Notobasis syriaca  (L.) Cass. Syrian thistle
Nuphar advena  (Aiton) W.T.Aiton spatter-dock
Nuphar lutea  (L.) Sm. yellow water-lily
Nuphar pumila  (Timm) DC. least water-lily
Nymphaea alba  L. white water-lily
Nymphaea odorata  Aiton fragrant water-lily
Nymphoides peltata  (S.G.Gmel.) Kuntze fringed water-lily
Ochagavia carnea  (Beer) L.B.Sm. & Looser Tresco rhodostachys
Ocimum basilicum  L. sweet basil
Ocimum campechianum  Mill. wild basil
Odontites vernus  (Bellardi) Dumort. red bartsia
Oemleria cerasiformis  (Hook. & Arn.) J.W.Landon osoberry
Oenanthe aquatica  (L.) Poir. fine-leaved water-dropwort
Oenanthe crocata  L. hemlock water-dropwort
Oenanthe fistulosa  L. tubular water-dropwort
Oenanthe lachenalii  C.C.Gmel. parsley water-dropwort
Oenanthe pimpinelloides  L. corky-fruited water-dropwort
Oenanthe silaifolia  M.Bieb. narrow-leaved water-dropwort
Oenothera biennis  L. common evening-primrose
Oenothera glazioviana  Micheli large-flowered evening-primrose
Oenothera laciniata  Hill cut-leaved evening-primrose
Oenothera macrocarpa  Nutt. Missouri evening-primrose
Oenothera perennis  L. small sundrops
Oenothera rosea  Aiton rosy evening-primrose
Olearia x haastii  Hook.f. daisy-bush
Olearia nummulariifolia  (Hook.f.) Hook.f. sticky daisy-bush
Omphalodes verna  Moench blue-eyed-Mary
Onobrychis caput-galli  (L.) Lam. cockscomb sainfoin
Onobrychis viciifolia  Scop. sainfoin
Onoclea sensibilis  L. sensitive fern
Ononis alopecuroides  L. Salzmann's restharrow
Ononis natrix  L. yellow restharrow
Ononis spinosa  L. spiny restharrow
Ononis spinosa ssp. procurrens  (Wallr.) Briq. common restharrow
Onopordum acanthium  L. cotton thistle
Onopordum illyricum  L. Illyrian thistle
Onopordum nervosum  Boiss. reticulate thistle
Ophioglossum vulgatum  L. adder's-tongue
Ophrys apifera  Huds. bee orchid
Ophrys fuciflora  (F.W.Schmidt) Moench late spider-orchid
Ophrys insectifera  L. fly orchid
Ophrys sphegodes  Mill. early spider-orchid
Orchis anthropophora  (L.) All. man orchid
Orchis mascula  (L.) L. early-purple orchid
Orchis militaris  L. military orchid
Orchis purpurea  Huds. lady orchid
Origanum majorana  L. pot marjoram
Origanum vulgare  L. wild marjoram
Orlaya grandiflora  (L.) Hoffm. large-flowered orlaya
Ornithogalum nutans  L. drooping star-of-Bethlehem
Ornithogalum pyrenaicum  L. spiked star-of-Bethlehem
Ornithogalum thyrsoides  Jacq. chincherinchee
Ornithogalum umbellatum  L. garden star-of-Bethlehem, star-of-Bethlehem
Ornithopus compressus  L. yellow serradella
Ornithopus perpusillus  L. bird's-foot
Ornithopus sativus  Brot. serradella
Orobanche alba  Willd. thyme broomrape
Orobanche crenata  Forssk. bean broomrape
Orobanche elatior  Sutton knapweed broomrape
Orobanche hederae  Duby ivy broomrape
Orobanche lucorum  A.Braun barberry broomrape
Orobanche minor  Sm. common broomrape
Orobanche reticulata  Wallr. thistle broomrape
Orthilia secunda  (L.) House serrated wintergreen
Oscularia deltoides  (L.) Schwantes deltoid-leaved dewplant
Osmunda regalis  L. royal fern
Osteospermum jucundum  (E.Phillips) Norl. osteospermum
Oxalis acetosella  L. wood-sorrel
Oxalis articulata  Savigny pink-sorrel
Oxalis corniculata  L. procumbent yellow-sorrel
Oxalis debilis var. corymbosa  (DC.) Lourteig large-flowered pink-sorrel
Oxalis dillenii  Jacq. Sussex yellow-sorrel
Oxalis incarnata  L. pale pink-sorrel
Oxalis latifolia  Kunth garden pink-sorrel
Oxalis megalorrhiza  Jacq. fleshy yellow-sorrel
Oxalis pes-caprae  L. Bermuda-buttercup
Oxalis rosea  Jacq. annual pink-sorrel
Oxalis stricta  L. upright yellow-sorrel
Oxalis tetraphylla  Cav. four-leaved pink-sorrel
Oxalis valdiviensis  Barnéoud Chilean yellow-sorrel
Oxybasis chenopodioides  (L.) S.Fuentes & al. saltmarsh goosefoot
Oxybasis glauca  (L.) S.Fuentes & al. oak-leaved goosefoot
Oxybasis rubra  (L.) S.Fuentes & al. red goosefoot
Oxybasis urbica  (L.) S.Fuentes & al. upright goosefoot
Oxyria digyna  (L.) Hill mountain sorrel
Oxytropis campestris  (L.) DC. yellow oxytropis
Oxytropis halleri  W.D.J.Koch purple oxytropis
Ozothamnus leptophyllus  (G.Forst.) Breitw. & J.M.Ward golden-bush
Pachyphragma macrophyllum  (Hoffm.) Busch Caucasian penny-cress
Pachysandra terminalis  Siebold & Zucc. carpet box
Paeonia lactiflora  Pall. Chinese peony
Paeonia lutea  Franch. yellow tree-peony
Paeonia mascula  (L.) Mill. peony
Paeonia officinalis  L. garden peony
Pancratium maritimum  L. sea daffodil
Panicum capillare  L. witch-grass
Panicum miliaceum  L. common millet
Papaver argemone  L. prickly poppy
Papaver atlanticum  (Ball) Coss. Atlas poppy
Papaver cambricum  L. Welsh poppy
Papaver dubium  L. long-headed poppy
Papaver glaucum  Boiss. & Hausskn. tulip poppy
Papaver hybridum  L. rough poppy
Papaver lasiothrix  Fedde Oriental poppy
Papaver lecoqii  Lamotte yellow-juiced poppy
Papaver pavoninum  Fisch. & C.A.Mey. peacock poppy
Papaver rhoeas  L. common poppy
Papaver somniferum  L. opium poppy
Parapholis incurva  (L.) C.E.Hubb. curved hard-grass
Parapholis strigosa  (Dumort.) C.E.Hubb. hard-grass
Parietaria judaica  L. pellitory-of-the-wall
Parietaria officinalis  L. eastern pellitory-of-the-wall
Paris quadrifolia  L. herb-paris
Parnassia palustris  L. grass-of-Parnassus
Parthenium hysterophorus  L. Santa-Maria
Parthenocissus henryana  (Hemsl.) Diels & Gilg Chinese Virginia-creeper
Parthenocissus inserta  (A.Kern.) Fritsch false Virginia-creeper
Parthenocissus quinquefolia  (L.) Planch. Virginia-creeper
Parthenocissus tricuspidata  (Siebold & Zucc.) Planch. Boston-ivy
Paspalum dilatatum  Poir. Dallis-grass
Paspalum distichum  L. water finger-grass
Passiflora caerulea  L. blue passionflower
Pastinaca sativa  L. wild parsnip
Paulownia tomentosa  (Thunb.) Steud. foxglove-tree
Pedicularis palustris  L. marsh lousewort
Pedicularis sylvatica  L. lousewort
Pedilanthus tithymaloides  (L.) Poit. devil's-backbone
Pelargonium capitatum  (L.) L'Hér. rose geranium
Pelargonium x hortorum  L.H.Bailey zonal geranium
Pelargonium tomentosum  Jacq. peppermint-scented geranium
Pentaglottis sempervirens  (L.) L.H.Bailey green alkanet
Pericallis x hybrida  B.Nord. cineraria
Persea americana  Mill. avocado
Persicaria amphibia  (L.) Gray amphibious bistort
Persicaria capitata  (D.Don) H.Gross pink-headed persicaria
Persicaria hydropiper  (L.) Spach water-pepper
Persicaria lapathifolia  (L.) Gray pale persicaria
Persicaria maculosa  Gray redshank
Persicaria minor  (Huds.) Opiz small water-pepper
Persicaria pensylvanica  (L.) M.Gómez pinkweed
Persicaria sagittata  (L.) H.Gross American tear-thumb
Petasites albus  (L.) Gaertn. white butterbur
Petasites hybridus  (L.) P.Gaertn. & al. butterbur
Petasites japonicus  (Siebold & Zucc.) Maxim. giant butterbur
Petasites pyrenaicus  (L.) G.López winter heliotrope
Petrorhagia dubia  (Raf.) G.López & Romo hairy pink
Petrorhagia prolifera  (L.) P.W.Ball & Heywood proliferous pink
Petrorhagia saxifraga  (L.) Link tunicflower
Petroselinum crispum  (Mill.) A.W.Hill garden parsley
Petunia x hybrida  Vilm. petunia
Peucedanum officinale  L. hog's fennel
Peucedanum ostruthium  (L.) W.D.J.Koch masterwort
Peucedanum palustre  (L.) Moench milk-parsley
Phacelia campanularia  A.Gray California-bluebell
Phacelia congesta  Hook. blue-curls
Phacelia linearis  (Pursh) Holz. linear-leaved phacelia
Phacelia tanacetifolia  Benth. phacelia
Phacelia viscida  (Benth.) Torr. sticky phacelia
Phalaris aquatica  L. bulbous Canary-grass
Phalaris arundinacea  L. reed Canary-grass
Phalaris brachystachys  Link confused Canary-grass
Phalaris canariensis  L. Canary-grass
Phalaris minor  Retz. lesser Canary-grass
Phalaris paradoxa  L. awned Canary-grass
Phaseolus coccineus  L. runner bean
Phaseolus lunatus  L. butter bean
Phaseolus vulgaris  L. French bean
Phedimus hybridus  (L.) 't Hart Siberian stonecrop
Phedimus kamtschaticus  (Fisch. & C.A.Mey.) 't Hart Kamchatka stonecrop
Phedimus spurius  (M.Bieb.) 't Hart Caucasian-stonecrop
Phedimus stellatus  (L.) Raf. starry stonecrop
Phedimus stoloniferus  (S.G.Gmel.) 't Hart lesser Caucasian-stonecrop
Phegopteris connectilis  (Michx.) Watt beech fern
Phelipanche purpurea  (Jacq.) Soják yarrow broomrape
Philadelphus coronarius  L. mock-orange
Philadelphus pubescens  Loisel. broad-leaved mock-orange
Philadelphus x virginalis  Rehder hairy mock-orange
Phleum alpinum  L. alpine cat's-tail
Phleum arenarium  L. sand cat's-tail
Phleum phleoides  (L.) H.Karst. purple-stem cat's-tail
Phleum pratense  L. timothy
Phleum pratense ssp. nodosum  (L.) Dumort. smaller cat's-tail
Phlomis fruticosa  L. Jerusalem sage
Phlomis russeliana  (Sims) Benth. Turkish sage
Phlomis samia  L. Greek sage
Phlox drummondii  Hook. annual phlox
Phlox paniculata  L. phlox
Phlox subulata  L. moss phlox
Phoenix dactylifera  L. date
Phormium cookianum  Le Jol. lesser New Zealand flax
Phormium tenax  J.R.Forst. & G.Forst. New Zealand flax
Photinia davidiana  (Decne.) Cardot stranvaesia
Phragmites australis  (Cav.) Steud. common reed
Phuopsis stylosa  (Trin.) B.D.Jacks. Caucasian crosswort
Phygelius capensis  Benth. Cape figwort
Phyla nodiflora  (L.) Greene frogfruit
Phyllodoce caerulea  (L.) Bab. blue heath
Physalis angulata  L. cut-leaved ground-cherry
Physalis peruviana  L. Cape-gooseberry
Physalis philadelphica  Lam. large-flowered tomatillo, tomatillo
Physalis pubescens  L. low ground-cherry
Physalis viscosa  L. stellate ground-cherry
Physocarpus opulifolius  (L.) Maxim. ninebark
Physostegia virginiana  (L.) Benth. obedient-plant
Phyteuma nigrum  F.W.Schmidt black rampion
Phyteuma orbiculare  L. round-headed rampion
Phyteuma scheuchzeri  All. Oxford rampion
Phyteuma spicatum  L. spiked rampion
Phytolacca acinosa  Roxb. Indian pokeweed
Phytolacca icosandra  L. button pokeweed
Phytolacca octandra  L. inkweed
Picea abies  (L.) H.Karst. Norway spruce
Picea asperata  Mast. dragon spruce
Picea breweriana  S.Watson Brewer spruce
Picea engelmannii  Engelm. Engelmann spruce
Picea glauca  (Moench) Voss white spruce
Picea glehnii  (F.Schmidt) Mast. Sakhalin spruce
Picea omorika  (Pancic) Purk. Serbian spruce
Picea orientalis  (L.) Link Oriental spruce
Picea polita  (Siebold & Zucc.) Carrière tiger-tail spruce
Picea pungens  Engelm. Colorado spruce
Picea sitchensis  (Bong.) Carrière Sitka spruce
Picea smithiana  (Wall.) Boiss. morinda spruce
Picris hieracioides  L. hawkweed oxtongue
Pilea microphylla  (L.) Liebm. artillery-plant
Pilosella aurantiaca  (L.) F.W.Schultz & Sch.Bip. fox-and-cubs
Pilosella caespitosa  (Dumort.) P.D.Sell & C.West yellow fox-and-cubs
Pilosella flagellaris  (Willd.) Arv.-Touv. Shetland mouse-ear-hawkweed
Pilosella officinarum  F.W.Schultz & Sch.Bip. mouse-ear-hawkweed
Pilularia globulifera  L. pillwort
Pimpinella major  Huds. greater burnet-saxifrage
Pimpinella saxifraga  L. burnet-saxifrage
Pinguicula alpina  L. alpine butterwort
Pinguicula grandiflora  Lam. large-flowered butterwort
Pinguicula lusitanica  L. pale butterwort
Pinguicula vulgaris  L. common butterwort
Pinus banksiana  Lamb. jack pine
Pinus cembra  L. arolla pine
Pinus contorta ssp. latifolia  (Engelm.) Critchf. lodgepole pine
Pinus densiflora  Siebold & Zucc. Japanese pine
Pinus mugo  Turra dwarf mountain-pine
Pinus nigra  J.F.Arnold Austrian pine
Pinus nigra ssp. laricio  Maire Corsican pine
Pinus pinaster  Aiton maritime pine
Pinus ponderosa  C.Lawson western yellow-pine
Pinus radiata  D.Don Monterey pine
Pinus rigida  Mill. northern pitch-pine
Pinus strobus  L. Weymouth pine
Pinus sylvestris  L. Scots pine
Pinus thunbergii  Parl. non Lamb. Japanese black-pine
Pinus wallichiana  A.B.Jacks. Bhutan pine
Pistia stratiotes  L. water-lettuce
Pisum sativum  L. garden pea
Pittosporum crassifolium  A.Cunn. karo
Pittosporum tenuifolium  Gaertn. kohuhu
Plantago afra  L. glandular plantain
Plantago arenaria  Waldst. & Kit. branched plantain
Plantago coronopus  L. buck's-horn plantain
Plantago lagopus  L. hare's-foot plantain
Plantago lanceolata  L. ribwort plantain
Plantago major  L. greater plantain
Plantago maritima  L. sea plantain
Plantago media  L. hoary plantain
Plantago ovata  Forssk. blond plantain
Plantago rugelii  Decne. blackseed plantain
Plantago sempervirens  Crantz shrubby plantain
Plantago uniflora  L. shoreweed
Plantago virginica  L. Virginian plantain
Platanthera bifolia  (L.) Rich. lesser butterfly-orchid
Platanthera chlorantha  (Custer) Rchb. greater butterfly-orchid
Platanus x hispanica  Münchh. London plane
Platanus occidentalis  L. American plane
Platanus orientalis  L. Oriental plane
Platycladus orientalis  (L.) Franco Chinese thuja
Platystemon californicus  Benth. cream-cups
Plectranthus scutellarioides  (L.) R.Br. painted-nettle
Pleioblastus chino  (Franch. & Sav.) Makino Maximowicz's bamboo
Pleioblastus pygmaeus  (Miq.) Nakai dwarf bamboo
Pleioblastus simonii  (Carrière) Nakai Simon's bamboo
Poa alpina  L. alpine meadow-grass
Poa annua  L. annual meadow-grass
Poa bulbosa  L. bulbous meadow-grass
Poa compressa  L. flattened meadow-grass
Poa flexuosa  Sm. wavy meadow-grass
Poa glauca  Vahl glaucous meadow-grass
Poa nemoralis  L. wood meadow-grass
Poa palustris  L. swamp meadow-grass
Poa pratensis  L. smooth meadow-grass
Poa pratensis ssp. angustifolia  (L.) Dumort. narrow-leaved meadow-grass
Poa trivialis  L. rough meadow-grass
Podolepis gracilis  (Lehm.) Graham slender podolepis
Podophyllum hexandrum  Royle Himalayan may-apple
Polemonium caeruleum  L. Jacob's-ladder
Polycarpon tetraphyllum  (L.) L. four-leaved allseed
Polygala amarella  Crantz dwarf milkwort
Polygala calcarea  F.W.Schultz chalk milkwort
Polygala chamaebuxus  L. shrubby milkwort
Polygala serpyllifolia  Hosé heath milkwort
Polygala vulgaris  L. common milkwort
Polygonatum x hybridum  Brügger garden Solomon's-seal
Polygonatum multiflorum  (L.) All. Solomon's-seal
Polygonatum odoratum  (Mill.) Druce angular Solomon's-seal
Polygonatum verticillatum  (L.) All. whorled Solomon's-seal
Polygonum aviculare  L. sensu lato knotgrass
Polygonum maritimum  L. sea knotgras
Polygonum oxyspermum  C.A.Mey. & Bunge Ray's knotgrass
Polypodium cambricum  L. southern polypody
Polypodium interjectum  Shivas intermediate polypody
Polypodium vulgare  L. polypody
Polypogon monspeliensis  (L.) Desf. annual beard-grass
Polystichum aculeatum  (L.) Roth hard shield-fern
Polystichum lonchitis  (L.) Roth holly-fern
Polystichum munitum  (Kaulf.) C.Presl western sword-fern
Polystichum setiferum  (Forssk.) Woyn. soft shield-fern
Pontederia cordata  L. pickerelweed
Populus alba  L. white poplar
Populus balsamifera  L. eastern balsam-poplar
Populus x berolinensis  (K.Koch) Dippel Berlin poplar
Populus x canadensis  Moench hybrid black-poplar
Populus x canescens  (Aiton) Sm. grey poplar
Populus deltoides  Marshall necklace poplar
Populus x generosa  A.Henry generous poplar
Populus x jackii  Sarg. balm-of-Gilead
Populus laurifolia  Ledeb. laurel-leaved poplar
Populus maximowiczii  A.Henry japanese balsam-poplar
Populus nigra  L. black-poplar
Populus tremula  L. aspen
Populus tremuloides  Michx. American aspen
Populus trichocarpa  Torr. & A.Gray western balsam-poplar
Portulaca grandiflora  Hook. rose-moss
Portulaca oleracea  L. common purslane
Potamogeton acutifolius  Link sharp-leaved pondweed
Potamogeton alpinus  Balb. red pondweed
Potamogeton berchtoldii  Fieber small pondweed
Potamogeton coloratus  Hornem. fen pondweed
Potamogeton compressus  L. grass-wrack pondweed
Potamogeton crispus  L. curled pondweed
Potamogeton gramineus  L. various-leaved pondweed
Potamogeton lucens  L. shining pondweed
Potamogeton natans  L. broad-leaved pondweed
Potamogeton obtusifolius  Mert. & W.D.J.Koch blunt-leaved pondweed
Potamogeton perfoliatus  L. perfoliate pondweed
Potamogeton polygonifolius  Pourr. bog pondweed
Potamogeton praelongus  Wulfen long-stalked pondweed
Potamogeton pusillus  L. lesser pondweed
Potamogeton rutilus  Wolfg. Shetland pondweed
Potamogeton x salicifolius  Wolfg. willow-leaved pondweed
Potamogeton trichoides  Cham. & Schltdl. hairlike pondweed
Potentilla alba  L. white cinquefoil
Potentilla alchemilloides  Lapeyr. Alchemilla-leaved cinquefoil
Potentilla anglica  Laichard. trailing tormentil
Potentilla argentea  L. hoary cinquefoil
Potentilla chrysantha  Trevir. Thuringian cinquefoil
Potentilla crantzii  (Crantz) Fritsch alpine cinquefoil
Potentilla erecta  (L.) Raeusch. tormentil
Potentilla inclinata  Vill. grey cinquefoil
Potentilla indica  (Jacks.) Th.Wolf yellow-flowered strawberry
Potentilla intermedia  L. Russian cinquefoil
Potentilla norvegica  L. ternate-leaved cinquefoil
Potentilla recta  L. sulphur cinquefoil
Potentilla reptans  L. cinquefoil
Potentilla sterilis  (L.) Garcke barren strawberry
Potentilla verna  L. spring cinquefoil
Prenanthes purpurea  L. purple lettuce
Primula auricula  L. auricula
Primula elatior  (L.) Hill oxlip
Primula farinosa  L. bird's-eye primrose
Primula florindae  Kingdon-Ward Tibetan cowslip
Primula japonica  A.Gray Japanese cowslip
Primula juliae  Kusn. Julia's primrose
Primula x polyantha  Mill. false oxlip
Primula pulverulenta  Duthie mealy cowslip
Primula scotica  Hook. Scottish primrose
Primula sikkimensis  Hook. Sikkim cowslip
Primula spectabilis  Tratt. spectacular primrose
Primula veris  L. cowslip
Primula vulgaris  Huds. primrose
Proboscidea louisianica  (Mill.) Thell. purple-flowered devil's-claw
Prospero autumnale  (L.) Speta autumn squill
Prunella grandiflora  (L.) Scholler large-flowered selfheal
Prunella laciniata  (L.) L. cut-leaved selfheal
Prunella vulgaris  L. selfheal
Prunus armeniaca  L. apricot
Prunus avium  L. wild cherry
Prunus cerasifera  Ehrh. cherry plum
Prunus cerasus  L. dwarf cherry
Prunus dulcis  (Mill.) D.A.Webb almond
Prunus incisa  Thunb. Fuji cherry
Prunus laurocerasus  L. cherry laurel
Prunus lusitanica  L. Portugal laurel
Prunus mahaleb  L. St Lucie cherry
Prunus padus  L. bird cherry
Prunus pensylvanica  L.f. pin cherry
Prunus persica  (L.) Batsch peach
Prunus serotina  Ehrh. rum cherry
Prunus serrulata  Lindl. Japanese cherry
Prunus spinosa  L. blackthorn
Pseudofumaria alba  (Mill.) Lidén pale corydalis
Pseudofumaria lutea  (L.) Borkh. yellow corydalis
Pseudognaphalium luteoalbum  (L.) Hilliard & B.L.Burtt Jersey cudweed
Pseudorchis albida  (L.) Á.Löve & D.Löve small-white orchid
Pseudosasa japonica  (Steud.) Nakai arrow bamboo
Pseudotsuga menziesii  (Mirb.) Franco Douglas fir
Pseudoturritis turrita  (L.) Al-Shehbaz tower cress
Psylliostachys suworowii  (Regel) Roshkova rat's-tail statice
Pteridium aquilinum  (L.) Kuhn bracken
Pteris cretica  L. ribbon fern
Pteris tremula  R.Br. tender brake
Pteris vittata  L. ladder brake
Pterocarya fraxinifolia  (Lam.) Spach Caucasian wingnut
Puccinellia capillaris  (Lilj.) Jansen northern saltmarsh-grass
Puccinellia distans  (Jacq.) Parl. reflexed saltmarsh-grass
Puccinellia maritima  (Huds.) Parl. common saltmarsh-grass
Pulicaria dysenterica  (L.) Bernh. common fleabane
Pulicaria vulgaris  Gaertn. small fleabane
Pulmonaria longifolia  (Bastard) Boreau narrow-leaved lungwort
Pulmonaria montana  Lej. mountain lungwort
Pulmonaria obscura  Dumort. Suffolk lungwort
Pulmonaria officinalis  L. lungwort
Pulmonaria rubra  Schott red lungwort
Pulmonaria saccharata  Mill. Bethlehem-sage
Pulsatilla vulgaris  Mill. pasqueflower
Punica granatum  L. pomegranate
Puschkinia scilloides  Adams striped squill
Pyracantha coccinea  M.Roem. firethorn
Pyracantha crenulata  (D.Don) M.Roem. Nepalese firethorn
Pyracantha rogersiana  (A.B.Jacks.) Bean Asian firethorn
Pyrola media  Sw. intermediate wintergreen
Pyrola minor  L. common wintergreen
Pyrola rotundifolia  L. roand-leaved wintergreen
Pyrus communis  L. pear
Pyrus pyraster  (L.) Burgsd. wild pear
Pyrus salicifolia  Pall. willow-leaved pear
Quercus alba  L. white oak
Quercus castaneifolia  C.A.Mey. chestnut-leaved oak
Quercus cerris  L. Turkey oak
Quercus coccinea  Münchh. scarlet oak
Quercus ilex  L. evergreen oak
Quercus imbricaria  Michx. shingle oak
Quercus palustris  Münchh. pin oak
Quercus petraea  (Matt.) Liebl. sessile oak
Quercus phellos  L. willow oak
Quercus pubescens  Willd. downy oak
Quercus robur  L. pedunculate oak
Quercus rubra  L. red oak
Quercus suber  L. cork oak
Quercus velutina  Lam. black oak
Radiola linoides  Roth allseed
Ramonda myconi  (L.) Rchb. Pyrenean-violet
Ranunculus aconitifolius  L. aconite-leaved buttercup
Ranunculus acris  L. meadow buttercup
Ranunculus aquatilis  L. common water-crowfoot
Ranunculus aquatilis var. diffusus  With. thread-leaved water-crowfoot
Ranunculus arvensis  L. corn buttercup
Ranunculus auricomus  L. sensu lato goldilocks buttercup
Ranunculus bulbosus  L. bulbous buttercup
Ranunculus flammula  L. lesser spearwort
Ranunculus fluitans  Lam. river water-crowfoot
Ranunculus hederaceus  L. ivy-leaved crowfoot
Ranunculus lingua  L. greater spearwort
Ranunculus muricatus  L. rough-fruited buttercup
Ranunculus ophioglossifolius  Vill. adderstongue spearwort
Ranunculus paludosus  Poir. Jersey buttercup
Ranunculus parviflorus  L. small-flowered buttercup
Ranunculus peltatus  Schrank pond water-crowfoot
Ranunculus pensylvanicus  L.f. bristly buttercup
Ranunculus repens  L. creeping buttercup
Ranunculus reptans  L. creeping spearwort
Ranunculus sardous  Crantz hairy buttercup
Ranunculus sceleratus  L. celery-leaved buttercup
Raphanus raphanistrum  L. wild radish
Raphanus raphanistrum ssp. landra  (DC.) Bonnier & Layens Mediterranean radish
Raphanus sativus  L. garden radish
Rapistrum perenne  (L.) All. steppe cabbage
Rapistrum rugosum  (L.) J.P.Bergeret bastard cabbage
Ratibida columnifera  (Nutt.) Wooton & Standl. prairie coneflower
Reineckea carnea  (Andrews) Kunth reineckea
Reseda alba  L. white mignonette
Reseda lutea  L. wild mignonette
Reseda luteola  L. weld
Reseda odorata  L. garden mignonette
Reseda phyteuma  L. corn mignonette
Reynoutria japonica  Houtt. Japanese knotweed
Reynoutria sachalinensis  (F.Schmidt) Nakai giant knotweed
Rhagadiolus stellatus  (L.) Gaertn. star hawkbit
Rhamnus alaternus  L. Mediterranean buckthorn
Rhamnus cathartica  L. buckthorn
Rhaponticum repens  (L.) Hidalgo Russian knapweed
Rheum officinale  Baill. Tibetan rhubarb
Rheum palmatum  L. ornamental rhubarb
Rheum rhabarbarum  L. rhubarb
Rhinanthus angustifolius  C.C.Gmel. greater yellow-rattle
Rhinanthus minor  L. yellow-rattle
Rhodanthe manglesii  Lindl. pink sunray
Rhodiola rosea  L. roseroot
Rhododendron arboreum  Sm. tree rhododendron
Rhododendron ferrugineum  L. alpenrose
Rhododendron luteum  Sweet yellow azalea
Rhododendron macrophyllum  G.Don Californian rosebay
Rhododendron ponticum  L. rhododendron
Rhododendron tomentosum  Harmaja Labrador-tea
Rhus coriaria  L. tanner's sumach
Rhus typhina  L. stag's-horn sumach
Rhynchospora alba  (L.) Vahl white beak-sedge
Rhynchospora fusca  (L.) W.T.Aiton brown beak-sedge
Ribes alpinum  L. mountain currant
Ribes aureum var. villosum  DC. buffalo currant
Ribes nigrum  L. black currant
Ribes rubrum  L. red currant
Ribes sanguineum  Pursh flowering currant
Ribes speciosum  Pursh fuchsia-flowered gooseberry
Ribes spicatum  E.Robson downy currant
Ribes uva-crispa  L. gooseberry
Ricinus communis  L. castor-oil-plant
Ridolfia segetum  Moris false fennel
Robinia pseudoacacia  L. false-acacia
Rodgersia podophylla  A.Gray rodgersia
Roemeria hybrida  (L.) DC. violet horned-poppy
Romulea rosea  (L.) Eckl. oniongrass
Rorippa amphibia  (L.) Besser great yellow-cress
Rorippa x anceps  (Wahlenb.) Rchb. hybrid yellow-cress
Rorippa islandica  (Oeder) Borbás northern yellow-cress
Rorippa palustris  (L.) Besser marsh yellow-cress
Rorippa sylvestris  (L.) Besser creeping yellow-cress
Rosa agrestis  Savi small-leaved sweet-briar
Rosa x alba  L. white rose
Rosa arvensis  Huds. field-rose
Rosa balsamica  Besser round-leaved dog-rose
Rosa blanda  Aiton smooth rose
Rosa canina  L. dog-rose
Rosa carolina  L. pasture rose
Rosa x centifolia  L. cabbage rose
Rosa chinensis  Jacq. China rose
Rosa x damascena  Mill. Damask rose
Rosa dumalis  Bechst. glaucous dog-rose
Rosa dumalis ssp. coriifolia  (Fr.) P.Fourn. hairy dog-rose
Rosa foetida  Herrm. Austrian briar
Rosa gallica  L. red rose
Rosa lucieae  Crép. memorial rose
Rosa majalis  Herrm. cinnamon rose
Rosa micrantha  Sm. small-flowered sweet-briar
Rosa multiflora  Thunb. many-flowered rose
Rosa x noisettiana  Thory noisette rose
Rosa palustris  Marshall swamp rose
Rosa pendulina  L. alpine rose
Rosa rubiginosa  L. sweet-briar
Rosa rugosa  Thunb. Japanese rose
Rosa sericea  Lindl. silky rose
Rosa setigera  Michx. prairie rose
Rosa sherardii  Davies Sherard's downy-rose
Rosa x spaethiana 'Hollandica'   Dutch rose
Rosa spinosissima  L. burnet rose
Rosa stylosa  Desv. short-styled field-rose
Rosa tomentosa  Sm. harsh downy-rose
Rosa willmottiae  Hemsl. miss Willmott's rose
Rosa villosa  L. apple rose
Rosa villosa ssp. mollis  (Sm.) R.Keller & Gams soft downy-rose
Rosa virginiana  Mill. Virginian rose
Rosmarinus officinalis  L. rosemary
Rostraria cristata  (L.) Tzvelev Mediterranean hair-grass
Rubia peregrina  L. wild madder
Rubia tinctorum  L. madder
Rubrivena polystachya  (Meisn.) M.Král Himalayan knotweed
Rubus arcticus  L. Arctic bramble
Rubus caesius  L. dewberry
Rubus chamaemorus  L. cloudberry
Rubus cockburnianus  Hemsl. white-stemmed bramble
Rubus coreanus  Miq. Korean bramble
Rubus idaeus  L. raspberry
Rubus illecebrosus  Focke strawberry-raspberry
Rubus loganobaccus  L.H.Bailey loganberry
Rubus odoratus  L. purple-flowered raspberry
Rubus parviflorus  Nutt. thimbleberry
Rubus phoenicolasius  Maxim. Japanese wineberry
Rubus saxatilis  L. stone bramble
Rubus spectabilis  Pursh salmonberry
Rubus tricolor  Focke Chinese bramble
Rudbeckia amplexicaulis  Vahl clasping-leaved coneflower
Rudbeckia fulgida  Aiton perennial coneflower
Rudbeckia hirta  L. black-eyed-Susan
Rudbeckia laciniata  L. coneflower
Rudbeckia triloba  L. thin-leaved coneflower
Rumex acetosa  L. common sorrel
Rumex acetosella  L. sheep's sorrel
Rumex alpinus  L. monk's rhubarb
Rumex aquaticus  L. Scottish dock
Rumex bucephalophorus  L. horned dock
Rumex confertus  Willd. Russian dock
Rumex conglomeratus  Murray clustered dock
Rumex crispus  L. curled dock
Rumex dentatus  L. Aegean dock
Rumex hydrolapathum  Huds. water dock
Rumex longifolius  DC. northern dock
Rumex maritimus  L. golden dock
Rumex obtusifolius  L. broad-leaved dock
Rumex palustris  Sm. marsh dock
Rumex patientia  L. patience dock
Rumex pulcher  L. fiddle dock
Rumex rugosus  Campd. garden sorrel
Rumex scutatus  L. French sorrel
Ruppia maritima  L. beaked tasselweed
Ruscus aculeatus  L. butcher's-broom
Ruscus hypoglossum  L. spineless butcher's-broom
Ruta graveolens  L. rue
Sabulina rubella  (Wahlenb.) Dillenb. & Kadereit mountain sandwort
Sabulina stricta  (Sw.) Rchb. Teesdale sandwort
Sabulina tenuifolia  (L.) Rchb. fine-leaved sandwort
Sabulina verna  (L.) Rchb. spring sandwort
Sagina apetala  Ard. annual pearlwort
Sagina maritima  Don sea pearlwort
Sagina nivalis  (Lindblom) Fr. snow pearlwort
Sagina nodosa  L. knotted pearlwort
Sagina x normaniana  Lagerh. Scottish pearlwort
Sagina procumbens  L. procumbent pearlwort
Sagina saginoides  (L.) H.Karst. alpine pearlwort
Sagina subulata  (Sw.) C.Presl heath pearlwort
Sagittaria graminea  Michx. grass-leaved arrowhead
Sagittaria latifolia  Willd. duck-potato
Sagittaria sagittifolia  L. arrowhead
Sagittaria subulata  (L.) Buchenau narrow-leaved arrowhead
Salicornia europaea  L. common glasswort
Salix acutifolia  Willd. Siberian violet-willow
Salix alba  L. white willow
Salix arbuscula  L. mountain willow
Salix aurita  L. eared willow
Salix x calodendron  Wimm. Holme willow
Salix caprea  L. goat willow
Salix cinerea  L. grey willow
Salix cinerea ssp. oleifolia  Macreight rusty willow
Salix daphnoides  Vill. European violet-willow
Salix discolor  Muhl. glaucous willow
Salix x ehrhartiana  Sm. non G.Mey. Ehrhart's willow
Salix elaeagnos  Scop. olive willow
Salix eriocephala  Michx. heart-leaved willow
Salix x fragilis  L. crack willow
Salix herbacea  L. dwarf willow
Salix holosericea  Willd. silky-leaved osier
Salix irrorata  Andersson blue-stem willow
Salix lanata  L. woolly willow
Salix lapponum  L. downy willow
Salix x laurina  Sm. laurel-leaved willow
Salix lucida  Muhl. shining willow
Salix x meyeriana  Willd. shiny-leaved willow
Salix x mollissima  Elwert sharp-stipuled willow
Salix myrsinifolia  Salisb. dark-leaved willow
Salix myrsinites  L. whortle-leaved willow
Salix x pendulina  Wender. weeping crack-willow
Salix pentandra  L. bay willow
Salix phylicifolia  L. tea-leaved willow
Salix purpurea  L. purple willow
Salix repens  L. creeping willow
Salix reticulata  L. net-leaved willow
Salix x rubra  Huds. green-leaved willow
Salix x salamonii  (Carrière) Carrière weeping willow
Salix x smithiana  Willd. broad-leaved osier
Salix x stipularis  Sm. eared osier
Salix triandra  L. almond willow
Salix udensis  Trautv. & C.A.Mey. Sachalin willow
Salix viminalis  L. osier
Salpichroa origanifolia  (Lam.) Baill. Cock's-eggs
Salpiglossis sinuata  Ruiz & Pav. painted-tongue
Salsola kali  L. prickly saltwort
Salsola tragus  L. spineless saltwort
Salvia aethiopis  L. African sage
Salvia argentea  L. silver sage
Salvia glutinosa  L. sticky clary
Salvia nemorosa  L. Balkan clary
Salvia officinalis  L. sage
Salvia sclarea  L. clary
Salvia splendens  Roem. & Schult. scarlet sage
Salvia x sylvestris  L. hybrid clary
Salvia verticillata  L. whorled clary
Salvia viridis  L. annual clary
Sambucus canadensis  L. American elder
Sambucus nigra  L. elder
Sambucus racemosa  L. red-berried elder
Samolus valerandi  L. brookweed
Sanguisorba canadensis  L. white burnet
Sanguisorba minor  Scop. salad burnet
Sanguisorba minor ssp. balearica  (Nyman) Munoz Garm. & C.Navarro fodder burnet
Sanguisorba officinalis  L. great burnet
Sanicula europaea  L. sanicle
Santolina chamaecyparissus  L. lavender-cotton
Santolina rosmarinifolia  L. holy-flax
Saponaria ocymoides  L. rock soapwort
Saponaria officinalis  L. soapwort
Sarracenia flava  L. trumpets
Sarracenia leucophylla  Raf. purple trumpet-leaf
Sarracenia purpurea  L. pitcherplant
Sasa palmata  (Burb.) E.G.Camus broad-leaved bamboo
Sasa veitchii  (Carrière) Rehder Veitch's bamboo
Sasaella ramosa  (Makino) Makino hairy bamboo
Satureja hortensis  L. summer savory
Satureja montana  L. winter savory
Saussurea alpina  (L.) DC. alpine saw-wort
Saussurea discolor  (Willd.) DC. heart-leaved saussurea
Saxifraga aizoides  L. yellow saxifrage
Saxifraga cernua  L. drooping saxifrage
Saxifraga cespitosa  L. tufted saxifrage
Saxifraga cuneifolia  L. lesser Londonpride
Saxifraga cymbalaria  L. celandine saxifrage
Saxifraga x geum  L. scarce Londonpride
Saxifraga granulata  L. meadow saxifrage
Saxifraga hirculus  L. marsh saxifrage
Saxifraga hirsuta  L. kidney saxifrage
Saxifraga hypnoides  L. mossy saxifrage
Saxifraga nivalis  L. alpine saxifrage
Saxifraga oppositifolia  L. purple saxifrage
Saxifraga paniculata  Mill. livelong saxifrage
Saxifraga x polita  (Haw.) Link false Londonpride
Saxifraga rivularis  L. highland saxifrage
Saxifraga rosacea  Moench Irish saxifrage
Saxifraga rotundifolia  L. round-leaved saxifrage
Saxifraga spathularis  Brot. St Patrick's cabbage
Saxifraga stellaris  L. starry saxifrage
Saxifraga stolonifera  Meerb. strawberry saxifrage
Saxifraga tridactylites  L. rue-leaved saxifrage
Saxifraga umbrosa  L. Pyrenean saxifrage
Saxifraga x urbium  D.A.Webb Londonpride
Scabiosa atropurpurea  L. sweet scabious
Scabiosa caucasica  M.Bieb. pincushion-flower
Scabiosa columbaria  L. small scabious
Scandix pecten-veneris  L. shepherd's-needle
Scheuchzeria palustris  L. Rannoch-rush
Schismus barbatus  (L.) Thell. kelch-grass
Schizanthus pinnatus  Ruiz & Pav. poor-man's-orchid
Schoenoplectus lacustris  (L.) Palla common club-rush
Schoenoplectus tabernaemontani  (C.C.Gmel.) Palla grey club-rush
Schoenoplectus triqueter  (L.) Palla triangular club-rush
Schoenus ferrugineus  L. brown bog-rush
Schoenus nigricans  L. black bog-rush
Sciadopitys verticillata  (Thunb.) Siebold & Zucc. umbrella-pine
Scilla bifolia  L.