172k | 190K | 160K | 123K | 145k | 120K | 158k | 169k |
| Abscess Root | Polemonium | reptans |
| Acacia | Acacia | abyssicina |
| Acacia | Acacia | glaucophylla |
| Acacia | Acacia | gummifera |
| Acacia | Acacia | nilotica |
| Acacia | Acacia | senegal |
| Acacias | Acacia | |
| Acanthus-leaved Thistle | Carlina | acanthifolia |
| Accocha | Cyclanthera | pedata |
| Aconite | Aconitum | |
| Aconite | Aconitum | columbianum |
| Aconite | Aconitum | fischeri |
| Acroclinium | Helipterum | roseum |
| Adam’s Needle | Yucca | filamentosa |
| Adder’s Tongue | Erythronium | americanum |
| Adder’s Tongue | Erythronium | tuolumnense |
| Aden Senna | Cassia | holosericeae |
| Adriatic bellflower | Campanula | elatines |
| Adzuki Bean | Phaseolus | angularis |
| African Ammoniacum | Ferula | communis |
| African Bdellium | Balsamodendron | africanum |
| African Bdellium | Ceradia | furcata |
| African Blackwood | Peltophorum | africanum |
| African Cedar | Cedrus | atlantica |
| African Cucumber | Cucumis | metuliferus |
| African Daisy | Arctotis | breviscapa |
| African Daisy | Arctotis | hybrida |
| African Daisy | Arctotis | venusta |
| African Daisy | Dimorphotheca | barberiae |
| African Daisy | Dimorphotheca | ecklonis |
| African Kino | Pterocarpus | erinaceus |
| African Lily | Agapanthus | africanus |
| African Marigold | Tagetes | erecta |
| African Valerian | Fedia | cornucopiae |
| African Valerian | Valeriana | cornucopiae |
| African Valerian | Valeriana | cornucopiae: |
| African violet | Saintpaulia | ionantha |
| African wormwood | Artemisia | afra |
| Agar-agar | Gelidium | amansii |
| Agave | Agave | americana |
| Agrimony | Agrimonia | eupatoria |
| Agrimony | Agrimonia | pilosa: |
| Agrimony | Agrimonia | viscidula: |
| Aji Colorado Chile | Capsicum | pendulum |
| Aji Habanero Chile | Capsicum | baccatum |
| Ajo lily | Hesperocallis | undulata |
| Ajowan | Carum | copticum |
| Ajowan | Trachyspermum | ammi |
| Ajwan | Carum | copti |
| Alaska Oniongrass | Melica | subulata |
| Alaska willow | Salix | alaxensis |
| Alaskan blueberry | Vaccinium | alaskaense |
| Alaskan mountain-heather | Cassiope | stelleriana |
| Alba Semiplena Rose | Rosa | x alba |
| Albany Beech Drops | Pterospora | andromeda |
| Alexanders | Smyrnium | olusatrum |
| Alfalfa | Medicago | sativa |
| Alkanet | Anchusa | |
| Alkanet | Anchusa | tinctoria |
| Alkanet | Pentaglottis | sempervirens |
| Alligator Juniper | Juniperus | pachyphloea |
| All-seed | Radiola | linoides |
| Allspice | Pimenta | dioica |
| Allspice | Pimenta | officinalis |
| Allspice | Pimenta | officinalis: |
| Allwood’s Dianthus | Dianthus | x allwoodii |
| Almond Geranium | Pelargonium | quercifolium ‘Pretty Polly’ |
| Aloe | Aloรซ | perryi |
| Aloe vera | Aloรซ | barbadensis |
| Aloe vera | Aloรซ | vera |
| Alp lily | Lloydia | serotina |
| Alpen Lady’s Mantle | Alchemilla | hoppeana |
| Alpine Anemone | Pulsatilla | alpina |
| Alpine Balsam | Erinus | alpinus |
| Alpine Columbine | Aquilegia | alpina |
| Alpine Fir | Abies | lasiocarpa |
| Alpine Knotweed | Polygonum | viviparum |
| Alpine Lady’s Mantle | Alchemilla | alpina |
| Alpine Poppy | Papaver | alpinum |
| Alpine Rockcress | Arabis | alpina |
| Alpine Speedwell | Veronica | alpina |
| Alpine Strawberries | Fragaria | vesca var. semperflorens |
| Alpine Toadflax | Linaria | alpina |
| alpine white marsh marigo | Caltha | biflora |
| Alpine Wormwood | Artemisia | laxa |
| Alpine-azalea | Loiseleuria | procumbens |
| Alpine-wintergreen | Gaultheria | humifusa |
| Alstonia Bark | Alstonia | constricta |
| Altern-fl Water Milfoil | Myriophyllum | alterniflorum |
| Alum Root | Heuchera | |
| Alum Root | Heuchera | glabra |
| Alum Root | Heuchera | micrantha |
| Alum Root | Heuchera | parvifolia |
| Alum Root | Heuchera | richardsonii |
| Aluminium Plant | Pilea | cadierei |
| Amaranth | Amaranthus | |
| Amaranth | Amaranthus | campestris |
| Amaranth | Amaranthus | hypochondriacus |
| Amaranth | Amaranthus | oleraceus |
| Amaranth | Amaranthus | polygonoides |
| Amaranth | Amaranthus | spinosa |
| Amaranth Greens | Amaranthus | gangeticus |
| Amarga Cascara | Picramnia | antidesma |
| Amaryllis | Hippeastrum | |
| Amaryllis | Hippeastrum | hybr. |
| Amazon Lily | Eucharis | grandiflora |
| Ambrosia | Ambrosia | mexicana |
| Ambrosia | Chenopodium | botrys ‘Green Magic’ |
| American Aloe | Manfreda | virginica |
| American Angelica | Angelica | atropurpurea |
| American Arnica | Arnica | chamissonis |
| American Bastard Sanicle | Mitella | … |
| American Bearsfoot | Polymnia | uvedalia |
| American Bittersweet | Celastrus | scandens |
| American Blackberry | Rubus | villosus |
| American Boxwood | Cornus | florida |
| American Bramble | Rubus | odoratus |
| American Centaury | Sabatia | angularis |
| American clubmoss | Diphasiastrum | complanatum |
| American Columbo | Frasera | carolinensis |
| American Cowbean | Cicuta | maculata |
| American Elder | Sambucus | canadensis |
| American Fumitory | Fumaria | indica |
| American Ginseng | Panax | quinquefolium |
| American Horsemint | Monarda | punctata |
| American Juniper | Juniperus | virginiana |
| American Linden | Tilia | americana |
| American Liquorice | Glycyrrhiza | lepidota |
| American Liverwort | Hepatica | nobilis |
| American Mandrake | Podophyllum | peltatum |
| American Mezereon | Dirca | palustris |
| American Mistletoe | Phoradendron | flavescens |
| American Mountain Ash | Sorbus | americana |
| American Mountain-Ash | Pyrus | americana: |
| American Pennyroyal | Hedeoma | pulegioides |
| American Pulsatilla | Pulsatilla | nuttaliane |
| American Sarsaparilla | Aralia | nudicaulis |
| American Sea Lavender | Statice | caroliniana |
| American Senna | Cassia | marilandica |
| American Smartweed | Polygonum | .. |
| American Solomon’s Seal | Polygonatum | biflorum |
| American Spikenard | Aralia | racemosa |
| American Sweet Cicely | Osmorhiza | |
| American Sweet Cicely | Ozmorrhiza | longistylis |
| American Valerian | Cypripedium | hirsutum: |
| American Valerian | Cypripedium | parviflorum |
| American Valerian | Cypripedium | pubescens |
| American veronica | Veronica | americana |
| American Wake Robin | Arum | triphyllum |
| American White Ash | Fraxinus | americana |
| American Wormseed | Chenopodium | ambrosioides |
| American Wormseed | Chenopodium | anthelminticum |
| American Yellowwood | Cladrastis | kentukea |
| Ammobium | Ammobium | alatum var. grandiflorum |
| Ammoniacum | Dorema | ammoniacum |
| Amole Lily | Chlorogalum | |
| Amole Lily | Chlorogalum | pomeridianum |
| Amur cork tree | Phellodendron | amurense |
| Amur Honeysuckle | Lonicera | maackii |
| Amur maple | Acer | ginnala: |
| Amur Pink | Dianthus | amurensis |
| Anemone | Anemone | pratensis |
| Anemone | Anemone | ranunculoides |
| Anemony | Anemone | |
| Angel Rose | Rosa | chinensis var. minima |
| Angelica | Angelica | |
| Angelica | Angelica | archangelica |
| Angelica | Angelica | hendersonii |
| Angelica | Angelica | lineariloba |
| Angelica | Angelica | polymorpha |
| Angelica | Angelica | tomentosa |
| Angelica Tree | Aralia | chinensis |
| Angel’s trumpet tree | Brugmansia | suaveolens |
| Angel’s trumpet tree | Brugmansia | suaveolens: |
| Angel’s Trumpet Tree | Datura | |
| Angel’s Trumpet Tree | Datura | suaveolens |
| Anise | Pimpinella | anisum |
| Anise hyssop | Agastache | anethiodora: |
| Anise hyssop | Agastache | anisata |
| Anise Hyssop | Agastache | foeniculum |
| Anise Verbena | Lippia | alba |
| Anise Verbena | Phyla | alba |
| Annatto | Bixa | orellana |
| Annual Baby’s Breath | Gypsophila | elegans |
| Annual Mercury | Mercurialis | annua |
| Annual Sea Blite | Suoeda | maritima |
| Antwerp hollyhock | Althaea | ficifolia |
| Apache plume | Fallugia | paradoxa |
| Apothecary’s Rose | Rosa | gallica ‘Officinalis’ |
| Appalachian Holly | Ilex | vomitoria |
| Apple | Malus | domestica |
| Apple Eucalyptus | Eucalyptus | gunnii |
| Apple Geranium | Pelargonium | odoratissimum |
| Apple Mint | Mentha | rotundifolia |
| Apple Mint | Mentha | x villosa |
| Apple of Sodom | Solanum | mammosum |
| Apple of Sodom | Solanum | sodomaeum |
| Apple-bearing Sage | Salvia | pomifera |
| Apple-blossom Shower | Cassia | javanica |
| Apple-fruited Granadilla | Passiflora | maliformis |
| Apple-ring Acacia | Acacia | albida |
| Apples | Malus | |
| Apricot Geranium | Pelargonium | scabrum ‘M.Ninon’ |
| Apricot tree | Armeniaca | vulgaris: |
| Apricot tree | Prunus | armeniaca |
| Arabian Thistle | Onopordum | arabicum |
| arame | Eisenia | bicyclis |
| Araroba | Andira | araroba |
| Arctic willow | Salix | arctica |
| Areca Nut (Malabar) | Areca | dicksoni |
| Areca palm | Chrysalidocarpus | lutescens |
| Armenain Yard Long Cucumb | Cucumis | melo var. flexuosus |
| Arnica | Arnica | |
| Arnica | Arnica | diversifolia |
| Arnica | Arnica | longifolia |
| Arnica | Arnica | mollis |
| Arnica | Arnica | parryi |
| Arrach | Chenopodium | olidum |
| Arrowhead | Sagittaria | sagittifolia |
| Arrowroot | Maranta | allouya |
| Arrowroot | Maranta | arundinaceae |
| Arrowroot | Maranta | dichotoma |
| Arrowroot | Maranta | malaccensis |
| Arrowroot | Maranta | nobilis |
| Arroyo Lupin | Lupinus | succulentus |
| Artemisia | Artemisia | |
| Arum | Arum | creticum |
| Arum | Arum | dioscorides |
| Arum | Arum | montanum |
| Arum Arrowroot | Dracunculus | vulgaris |
| Asafetida | Ferula | asafoetida |
| Asafetida | Scorodosma | foetida |
| Asarabacca | Asarum | europaeum |
| Ash | Fraxinus | excelsior |
| Ashwagandha | Withania | somnifera |
| Asian Limno | Limnophila | aromatica |
| Asian Liquorice | Glycyrrhiza | uralensis |
| Asiatic Ginseng | Panax | pseudoginseng |
| Asiatic Globe Flower | Trollius | asiaticus |
| Asparagus | Asparagus | officinalis |
| Asparagus Bean | Vigna | unguiculata |
| Asparagus Bean | Vigna | unguiculata var. sesquipedalis |
| Asphodel | Asphodelus | ramosus |
| Aster | Aster | alpinus |
| Aster | Chrysopsis | villosa |
| Asters | Aster | |
| Atlas Poppy | Papaver | atlanticum |
| Atomic Snowflake Geranium | Pelargonium | capitatum |
| Attar of Roses Geranium | Pelargonium | capitatum ‘Attar of Roses’ |
| Auricula | Primula | auricula |
| Australian Bluebell Creep | Sollya | heterophylla |
| Australian Caper-bush | Capparis | spinosa var. nummularia |
| Australian Climbing Lily | Eustrephus | |
| Australian Cycad | Macrozamia | communis |
| Australian Grass Tree | Xanthorroea | australis |
| Australian Red Cedar | Cedrela | tooma |
| Australian Sandarac | Coffea | canephora |
| Australian Snow Gum | Eucalyptus | niphophila |
| Australian Tea | Leptospermum | laevigatum |
| Austrian Geranium | Pelargonium | alpinum |
| Austrian Leopard’s Bane | Doronicum | austriacum |
| Austrian Pine | Pinus | nigra |
| Autumn Crocus | Colchicum | |
| Autumn Gentian | Gentiana | amarella |
| Autumn Oleaster | Elaeagnus | umbellata |
| Autumn Sage | Salvia | greggii |
| Autumnal Hawkbit | Leontodon | autumnalis |
| Avalanche lily | Erythronium | montanum |
| Avens | Geum | elatum |
| Avens | Geum | montanum |
| Avens | Geum | reptans |
| Avens | Geum | sylvaticum |
| Avens | Geum | urbanum |
| Avocado | Persea | americana |
| Azalea | Rhododendron | hybr. |
| Aztec sweet herb | Lippia | dulcis |
| babรกco | Carica | pentagona |
| Baby Blue Eyes | Nemophila | menziesii |
| Baby’s Breath | Gypsophila | |
| Bael | Aegle | marmelos |
| Bai Zhi | Angelica | dahurica |
| Bai zhu | Atractylodes | macrocephala |
| Baical skullcap | Scutellaria | grandiflora: |
| Baical skullcap | Scutellaria | lanceolaria: |
| Baical skullcap | Scutellaria | macrantha: |
| Baikal Skullcap | Scutellaria | baicalensis |
| Baldcypress | Taxodium | distichum |
| Baldhip rose | Rosa | gymnocarpa |
| Balloon flower | Campanula | gentianoides: |
| Balloon flower | Campanula | glauca: |
| Balloon flower | Campanula | grandiflora: |
| Balloon Flower | Platycodon | |
| Balloon Flower | Platycodon | grandiflorus |
| Balloon vine | Cardiospermum | halicacabum |
| Balloon Vine | Cardispermum | halicacabum |
| Balloon-flower | Platycodon | autumnalis: |
| Balloon-flower | Platycodon | chinense: |
| Balloon-flower | Platycodon | grandiflorum |
| Balloon-flower | Platycodon | sinensis: |
| Ballota | Ballota | pseudodictamnus |
| Balm | Melissa | officinalis |
| Balm Leaved Melittis | Melittis | melissophyllum |
| Balm of gilead | Cedronella | triphylla |
| Balm of Gilead (Fake) | Cedronella | canariensis |
| Balm of Gilead (USA) | Populus | nigra |
| Balm-leaved Figwort | Scrophularia | scorodoma |
| Balmony | Chelone | obliqua |
| Balm-scented Geranium | Pelargonium | vitifolium |
| Balsam Apple | Momordica | balsamina |
| Balsam fir | Abies | balsamea |
| Balsam of Gilead | Commiphora | opobalsamum |
| Balsam of Peru | Myroxylon | balsamum var. pereirae |
| Balsam of Tolu | Myrospermum | toluiferum |
| Balsam Pear | Momordica | charantia |
| Balsam Poplar | Populus | balsamifera |
| Balsam Poplar | Populus | trichocarpa |
| Balsam Root | Balsamorhiza | sagittata |
| Balsamic Sage | Salvia | grandiflora |
| Bamboo | Bambusa | |
| Bamboo Palm | Chamaedorea | erumpens |
| Banana | Musa | paradisiaca |
| Baneberry | Actaea | |
| Baneberry | Actaea | rubra |
| Baneberry | Actaea | spicata |
| Bank’s Grevillea | Grevillea | banksii var. forsteri |
| Banksia | Banksia | |
| Baobab | Adansonia | digitata |
| Barberry | Berberis | amurensis |
| Barberry | Berberis | darwinii |
| Barberry | Berberis | nervosa |
| Barberry | Berberis | repens |
| Barberry | Berberis | x lologensis |
| Barberry | Berberis | x stenophylla |
| Barclay’s willow | Salix | barclayi |
| Barley | Hordeum | distichon |
| Barley | Hordeum | vulgare |
| Barrel cactus | Echinocactus | grusonii |
| Barrel Cactus | Ferocactus | |
| Basil Thyme | Acinos | alpinus |
| Basil Thyme | Acinos | thymoides |
| Basil… (Guinea) | Ocimum | guineense |
| Basil… (India) | Ocimum | canum |
| Basil… (Japan) | Ocimum | crispum |
| Basil… (Java) | Ocimum | teniflorum |
| basil-thyme | Acinos | arvensis |
| Basin sagebrush | Artemisia | tridentata |
| Basket Flower | Centaurea | americana ‘Jolly Joker’ |
| Bastard Agrimony (Italy) | Agrimonium | agrimonoides |
| Bastard Cardamums | Amomum | xanthioides |
| Bastard Lavender | Lavandula | angustifolia x latifolia |
| Bastard Logwood | Acacia | berteriana |
| Bastard Lovage | Laserpitum | latifolia |
| Bastard Plantain | Heliconia | bihai |
| Bastard Teak | Pterocarpus | marsupium |
| Bat-wing Coral Tree | Erythrina | vespertilio |
| Bay Laurel | Laurus | nobilis |
| Baybean | Canavalia | maritima |
| Bayberry | Myrica | cerifera |
| Bayberry | Myrica | pennsylvanica |
| Beach Morning Glory | Ipomoea | pes-caprae |
| beaked hazelnut | Corylus | californica: |
| Beaked hazelnut | Corylus | cornuta var. californica |
| Beans | Phaseolus | |
| Bear Grass | Dasylirion | |
| Bear Grass | Nolina | |
| Bearberry | Arctostaphylos | polifolia |
| Bearberry | Arctostaphylos | uva-ursi |
| Bearberry | Salix | uva-ursi |
| Beard Tongue | Penstemon | ambiguus |
| Beard Tongue | Penstemon | fruticosus |
| Bearded Bellflower | Campanula | barbata |
| Bearded Darnel | Lolium | temulentum |
| Beard-tongue | Penstemon | |
| Bear-grass | Xerophyllum | tenax |
| Bear’s Angelica | Angelica | ursina |
| Bear’s Breech | Acanthus | mollis |
| Bear’s Breech | Acanthus | spinosus |
| Bear’s Ear Sanicle | Cortusa | matthioli |
| Bearsfoot | Helleborus | foetidus |
| Beauty Oak Geranium | Pelargonium | quercifolium ‘Beauty’ |
| Beautyberry | Callicarpa | |
| Beautybush | Kolkwitzia | amabilis |
| Bebb’s Sedge | Carex | bebbii |
| Bedstraw | Galium | |
| Bee Food | Phacelia | tanacetifolia |
| Beech | Fagus | sylvatica |
| Beech Drops | Orobanche | virginiana |
| Beetroot | Beta | vulgaris |
| Beggar Ticks | Bidens | frondosa |
| Begonia | Begonia | odorata |
| Belah | Casuarina | cristata |
| Bell agapanthus | Agapanthus | campanulatus |
| Belladonna Lily | Amaryllis | belladonna |
| Bellflower | Campanula | |
| Bellflower | Campanula | portenschlagiana |
| Bellflower | Campanula | x burghaltii |
| Bellflower | Campanula | zoysii |
| Bells of Ireland | Molicelia | laevis |
| Bells of Ireland | Moluccella | laevis |
| Belvedere cypress | Kochia | scoparia |
| Belvedere cypresss | Chenopodium | scoparia: |
| Benary’s Giant | Abutilon | hybridum maximum |
| Bengal Cardamoms | Amomum | subulatum |
| Benjamin | Lindera | benzoin |
| Benzoin | Styrax | |
| Benzoin | Styrax | benzoin |
| Bergamot | Citrus | bergamia |
| Betel | Piper | betel |
| Betel Palm | Areca | catechu |
| Betel palm | Areca | hortensis: |
| Bethroot | Trillium | pendulum |
| Betlehem Sage | Pulmonaria | saccharata |
| Betony | Betonica | officinalis |
| Betony | Pedicularis | |
| Betony | Stachys | |
| Betony | Stachys | scardia |
| Beukessboss | Lippia | scaberrima |
| Bidens | Bidens | pilosa |
| Big Bluestem | Andropogon | gerardi |
| Bigcone Douglas-fir | Pseudotsuga | macrocarpa |
| Big-horned Gum | Eucalyptus | megacornuta |
| Big-leaf Kennedia | Kennedia | macrophylla |
| Bigleaf maple | Acer | macrophyllum |
| Bilberry | Vaccinium | myrtillus |
| Bindweed | Convolvulus | dissectus |
| Bindweed | Convolvulus | purpureus |
| Bindweed | Convolvulus | rhodorhiza |
| Bindweeds | Convolvulus | |
| Biomass Willow | Salix | viminalis x dasyclados |
| Birch | Betula | |
| Birch | Betula | pubescens |
| Birch-leaf Mountain Mahog | Cercocarpus | betuloides |
| Bird Cherry | Prunus | padus |
| Bird of Paradise | Strelitzia | reginae |
| Bird of Paradise Bush | Poinciana | gilliesii |
| Bird-foot Violet | Viola | pedata |
| Bird’s Eye Maple | Acer | saccharinum |
| Bird’s Eyes | Gilia | tricolor |
| Bird’s Foot Trefoil | Lotus | corniculatus |
| Bird’s Nest Fern | Asplenium | nidus |
| Bird’s-eye Primrose | Primula | farinosa |
| Birthwort | Aristolochia | |
| Birthwort | Aristolochia | anguicida |
| Birthwort | Aristolochia | argentea |
| Birthwort | Aristolochia | argentina |
| Birthwort | Aristolochia | bracteata |
| Birthwort | Aristolochia | brasiliensis |
| Birthwort | Aristolochia | clematitis |
| Birthwort | Aristolochia | indica |
| Birthwort | Aristolochia | longa |
| Birthwort | Aristolochia | sempervirens |
| Bisabol Myrrh | Commiphora | erythraea |
| Bishop’s Flower | Ammi | majus |
| Bitter Almond | Prunus | dulcis var. amara |
| Bitter Bush | Eupatorium | nervosum |
| Bitter Candytuft | Iberis | amara |
| Bitter cherry | Prunus | emarginata |
| Bitter Columba Root | Jateorhiza | palmata |
| Bitter Orange | Citrus | vulgaris var. bigaradia |
| Bitter Root | Lewisia | rediviva |
| Bitter Root | Lewisia | spathulum |
| Bitter-Bush | Eupatorium | villosum |
| Black American Alder | Prinos | verticillatus |
| Black American Willow | Salix | nigra |
| Black Bearberry | Arctostaphylos | alpina |
| Black bindweed | Fallopia | convolvulus |
| Black Bryony | Tamus | communis |
| Black Catechu | Catechu | nigrum |
| Black Cherry | Prunus | serotina |
| Black Cohosh | Cimicifuga | elata |
| Black Cohosh | Cimicifuga | racemosa |
| Black cottonwood | Populus | balsamifera ssp. trichocarpa |
| Black Currant | Ribes | nigrum |
| Black Datura | Datura | metel |
| Black elderberry | Sambucus | racemosa ssp. pubens var. melanocar |
| Black False Hellebore | Veratrum | nigrum |
| Black gooseberry | Ribes | lacustre |
| Black hawthorn | Crataegus | douglasii |
| Black Hellebore | Helleborus | niger |
| Black Hellebore (Greek) | Helleborus | officinalis |
| Black henbane | Hyoscyamus | niger |
| Black Hollyhock | Alcea | rosea var. nigra |
| Black Horehound | Ballota | nigra |
| Black huckleberry | Vaccinium | membranaceum |
| Black Ipecacuanha | Psychotria | emetica |
| Black Knapweed | Centaurea | nigra |
| Black Locust | Robinia | pseudacacia |
| Black Mustard | Brassica | nigra |
| Black Nightshade | Solanum | nigrum |
| Black pepper | Piper | nigrum |
| Black Peppermint | Mentha | x piperita var. piperita |
| Black raspberry | Rubus | leucodermis |
| Black Root | Leptandra | virginica |
| Black Sage | Salvia | mellifer |
| Black Salsify | Scorzonera | hispanica |
| Black Spleenwort | Asplenium | adiantum nigrum |
| Black Swamp Ash | Fraxinus | nigra |
| Black twinberry | Lonicera | involucrata |
| Black Wattle (Australia) | Acacia | decurrens |
| Black Wormwood | Artemisia | genipi |
| Black Wrack | Fucus | serratus |
| Blackberry | Rubus | allegheniensis |
| Blackberry | Rubus | fruticosus |
| Blackberry Lily | Belamcanda | chinensis |
| Black-eyed Susan | Rudbeckia | hirta |
| Black-eyed Susan | Thunbergia | alata |
| Black-haw | Viburnum | prunifolium |
| Blackwood Acacia | Acacia | melanoxylon |
| Bladder Campion | Silene | cucubalus |
| Bladder Senna | Calutea | arborescens |
| Bladderpod | Alyssoides | utriculata |
| Bladder-senna | Colutea | arborescens |
| Bladderwrack | Fucus | vesiculosus |
| Blandford Geranium | Pelargonium | x blandfordianum |
| Blanket Flower | Gaillardia | aristata |
| Blanket Flower | Gaillardia | pulchella |
| Blazing Star | Mentzelia | lindleyi |
| Bleeding Heart | Dicentra | formosa |
| Bleeding Heart | Dicentra | spectabilis |
| Blood Flower | Asclepias | curassavica |
| Blood leaf Japanese maple | Acer | palmatum atropurpureum |
| Bloodroot | Sanguinaria | canadensis |
| Bloody Cranesbill | Geranium | sangiuneum |
| Blue Bean | Lupinus | perennis |
| Blue Boronia | Boronia | ramosa |
| Blue Cohosh | Caulophyllum | thalictroides |
| Blue dicks | Brodiaea | pulchella: |
| Blue dicks | Dichelostemma | pulchellum |
| Blue dwarf bellflower | Campanula | collina |
| Blue Elder | Sambucus | glauca |
| Blue elderberry | Sambucus | caerulea |
| Blue Fescue | Festuca | glauca |
| Blue Fescue | Festuca | ovina var. glauca |
| Blue Flag | Iris | versicolor |
| Blue Flax | Linum | perenne |
| Blue Flower De Luce | Iris | x germanica |
| Blue Gilia | Gilia | achilleifolia |
| Blue Hibiscus | Alyogyne | huegelii |
| Blue hibiscus | Hibiscus | huegelii: |
| Blue Jasmine | Clematis | crispa |
| Blue Lace Flower | Didiscus | caeruleus |
| Blue Lace-flower | Didiscus | caeruleus ‘Heavenly Blue’ |
| Blue Mallow | Malva | sylvestris |
| Blue Pacific Juniper | Juniperus | conferta |
| Blue Passion Flower | Passiflora | caerulea |
| Blue Poppy | Meconopsis | betonicifolia |
| Blue Porter Weed | Stachytarpetha | jamaicensis |
| Blue Rug Juniper | Juniperus | horizontalis |
| Blue Spanish fir | Abies | pinsapo glauca |
| Blue Vervain | Verbena | hastata |
| Blue Wild Indigo | Baptisia | australis |
| Bluebell | Endymion | non-scripta |
| Bluebell Creeper | Sollya | |
| Blueberry | Vaccinium | |
| Blue-eyed African daisy | Arctotis | stoechadifolia |
| Blue-eyed Grass | Sisyrinchium | |
| Blue-eyed Grass | Sisyrinchium | angustifolium |
| Blue-eyed-grass | Sisyrinchium | idahoense var. macounii |
| Bluejoint Grass | Calamagrostis | canadensis |
| Blue-leaf Wattle | Acacia | saligna |
| Blue-leaved huckleberry | Vaccinium | deliciosum |
| Blue-mountain bidi-bidi | Acaena | inermis |
| Bluestem | Andropogon | |
| Boerboom | Schotia | |
| Bog adder’s-mouth orchid | Hammarbya | paludosa |
| Bog Asphodel | Narthecium | ossifragum |
| Bog cranberry | Oxycoccus | oxycoccos |
| Bog Loosestrife | Lysimachia | barystachys |
| Bog Pimpernel | Anagallis | tenella |
| Bog rush | Juncus | effusus |
| Bog Sage | Salvia | uliginosa |
| Bog Spurge | Euphorbia | palustris |
| Bogan Flea | Calotis | cuneifolia |
| Bogbean | Menyanthes | trifoliata |
| Bog-rosemary | Andromeda | polifolia |
| Boldo | Peumus | boldus |
| Bolivian Coca | Erythroxylum | coca |
| Bombay Mace | Myristica | malabarica |
| Boneset | Eupatorium | perfoliatum |
| Book-leaf | Eucalyptus | kruseana |
| Borage | Borago | |
| Borage | Borago | officinalis |
| Borneo Camphor | Dryobalanops | camphora |
| Borneo camphor tree | Dryobalanops | aromatica |
| Borneo camphor tree | Dryobalanops | camphora: |
| Boston fern | Nephrolepis | exaltata |
| Boston Ivy | Parthenocissus | tricuspidata |
| Bo-tree | Ficus | religiosa |
| Bottle Gentian | Gentiana | andrewsii |
| Bottle Tree | Adansonia | gregorii |
| Bouvardia | Bouvardia | longiflora |
| Box | Buxus | sempervirens |
| box elder | Acer | negundo |
| Bracken | Pteridium | aquilinum |
| Bradbury’s Bee Balm | Monarda | russeliana |
| Branched Coneflower | Rudbeckia | triloba |
| Branching Everlasting | Gnaphalium | cymosum |
| Brasiletto | Caesalpinia | |
| Brass Buttons | Cotula | turbinata |
| Brazilian Arrowroot, Swe | Manihot | palmata |
| Brazilian Mimosa | Mimosa | humilis |
| Brazilian Pepper Tree | Schinus | terebinghifolius |
| Bread tree cycad | Encephalartos | altensteinii |
| Bread-nut Tree | Brosimum | alicastrum |
| Breakstone | Sison | amomum |
| Bridal veil | Gibasis | pellucida |
| Bright Blue Globe Thistle | Echinops | ritro ssp. ruthenicus |
| Bright Blue Speedwell | Veronica | subsessilis |
| Bristlecone Pine | Pinus | aristata |
| Bristle-like Mud-rush | Scirpus | saetaceus |
| brittlebush | Encelia | farinosa |
| Broadleaf Arnica | Arnica | latifolia |
| Broadleaf Thyme | Coleus | amboinicus |
| Broad-leaved Arrowhead | Sagittaria | latifolia |
| Broad-leaved Centaury | Erythraea | latifolia |
| Broad-leaved twayblade | Listera | convallarioides |
| Broad-leaved Yarrow | Achillea | macrophylla |
| Broccoli | Brassica | oleracea var. italica |
| Bromegrass | Bromus | madritensis |
| Bronze Fennel | Foeniculum | vulgare var. dulce ‘Rubrum’ |
| Brook Anemone | Anemone | rivularis |
| Brooklime | Veronica | beccabunga |
| Broom | Cytisus | ardoinii |
| Broom | Cytisus | battandieri |
| Broom | Sarothamnus | scoparius |
| Broomcorn | Sorghum | bicolor |
| Broom-Corn | Sorghum | vulgare |
| broomrape | Conopholis | alpina |
| Brussels Sprouts | Brassica | oleracea var. gemmifera |
| Bryony | Bryonia | |
| Bryony | Tamus | cretica |