| Latin Name | Common Name | Edibility Rating | Medicinal Rating |
| Abelia triflora | Indian Abelia | 0 | 0 |
| Abelmoschus esculentus | Okra | 4 | 3 |
| Abelmoschus manihot | Aibika | 4 | 1 |
| Abelmoschus moschatus | Musk Mallow,Musk Okra | 2 | 3 |
| Abobra tenuifolia | Cranberry Gourd | 1 | 0 |
| Abronia fragrans | Snowball Sand Verbena | 2 | 1 |
| Abronia latifolia | Sand Verbena, Coastal sand verbena | 2 | 0 |
| Abronia turbinata | Transmontane Sand Verbena | 0 | 1 |
| Abronia villosa | Desert Sand Verbena | 0 | 1 |
| Abutilon theophrasti | China Jute, Velvetleaf, Butterprint Buttonweed Jute, China Mallow, Indian Velvet Leaf | 3 | 2 |
| Acalypha australis | Asian copperleaf | 0 | 1 |
| Achillea ageratum | Mace, Sweet-nancy | 2 | 0 |
| Achillea erba-rotta moschata | Musk Milfoil | 0 | 2 |
| Achillea santolina | | 0 | 1 |
| Achillea sibirica | Siberian Yarrow | 1 | 1 |
| Achnatherum hymenoides | Indian Millet, Indian ricegrass | 3 | 0 |
| Achyranthes aspera | Devil's Horsewhip | 2 | 3 |
| Achyranthes bidentata | Niu Xi | 2 | 3 |
| Achyranthes faureri | | 1 | 1 |
| Acinos alpinus | Alpine Calamint | 1 | 1 |
| Acinos arvensis | Basil Thyme | 2 | 1 |
| Acinos rotundifolius | | 1 | 1 |
| Aciphylla colensoi | Wild Spaniard | 2 | 0 |
| Aciphylla squarrosa | Speargrass | 2 | 0 |
| Acourtia microcephala | Sacapellote | 0 | 1 |
| Acrotriche aggregata | | 1 | 0 |
| Acrotriche depressa | | 1 | 0 |
| Acrotriche prostrata | | 1 | 0 |
| Acrotriche serrulata | Honeypots | 2 | 0 |
| Actinea acaulis arizonica | | 0 | 0 |
| Adenophora denticulata | | 2 | 0 |
| Adenophora divaricata | | 2 | 0 |
| Adenophora lamarkii | | 2 | 0 |
| Adenophora latifolia | | 2 | 0 |
| Adenophora liliifolia | Ladybells, Lilyleaf | 2 | 0 |
| Adenophora nikoensis | | 2 | 0 |
| Adenophora remotiflora | | 2 | 1 |
| Adenophora stricta | Sha Shen, Ladybells | 2 | 1 |
| Adenophora triphylla | Nan Sha Shen | 2 | 1 |
| Adenophora verticillata | | 2 | 2 |
| Adenostoma fasciculatum | Greasewood | 0 | 1 |
| Adenostoma sparsifolium | Redshank | 1 | 1 |
| Adesmia lotoides | | 1 | 0 |
| Adiantum capillus-veneris | Maidenhair Fern, Common maidenhair, Southern Maidenhair Fern, Venus Maidenhair Fern, Venus's Hair Fe | 2 | 2 |
| Adonis aestivalis | Pheasant's Eye, Summer pheasant's eye | 0 | 1 |
| Adonis amurensis | | 0 | 1 |
| Adonis vernalis | Pheasant's Eye, Spring pheasant's eye | 0 | 3 |
| Aegilops speltoides | Goatgrass | 1 | 0 |
| Aegilops triuncialis | Barbed goatgrass, Barb goatgrass | 1 | 0 |
| Agalinis tenuifolia | Slenderleaf False Foxglove | 0 | 1 |
| Agapanthus africanus | African Lily, Lily of the nile | 0 | 1 |
| Agapanthus campanulatus | | 0 | 1 |
| Agapanthus praecox minimus | | 1 | 1 |
| Agastache cana | Hoary Balm Of Gilead, Mosquito plant | 2 | 0 |
| Agastache foeniculum | Anise Hyssop, Blue giant hyssop | 5 | 1 |
| Agastache mexicana | Mexican Giant Hyssop | 3 | 0 |
| Agastache neomexicana | New Mexico Giant Hyssop, Bill Williams Mountain giant hyssop | 3 | 1 |
| Agastache rugosa | Korean Mint | 4 | 3 |
| Agastache urticifolia | Giant Hyssop, Nettleleaf giant hyssop | 3 | 1 |
| Agave americana | Agave, American century plant | 3 | 3 |
| Agave parryi | Century Plant, Parry's agave, Mescal | 3 | 1 |
| Agave utahensis discreta | Century Plant | 3 | 1 |
| Agave utahensis eborispina | Century Plant | 3 | 1 |
| Ageratina rugosum | | 0 | 0 |
| Ageratum conyzoides | Goatweed, Tropical whiteweed | 0 | 3 |
| Agoseris glauca | Mountain Dandelion, Pale agoseris, False agoseris | 1 | 1 |
| Agrimonia pilosa | Hairy Agrimony | 2 | 3 |
| Agrimonia striata | Roadside agrimony | 0 | 2 |
| Agriophyllum squarrosum | Sand Rice | 1 | 0 |
| Agropyron elongatum | Tall Wheatgrass | 0 | 0 |
| Agrostemma githago | Corncockle, Common corncockle | 1 | 1 |
| Agrostis perennans | Upland Bent, Upland bentgrass | 1 | 0 |
| Aizoon canariense | | 1 | 0 |
| Ajuga chamaepitys | Ground Pine, Yellow bugle | 0 | 2 |
| Ajuga iva | Herb Ivy | 0 | 1 |
| Albuca amboensis | Slime Lily | 2 | 0 |
| Albuca canadensis | Slime Lily, Albuca | 1 | 0 |
| Albuca major | Slime Lily | 1 | 0 |
| Alcea rosea | Hollyhock | 3 | 2 |
| Alchemilla alpina | Alpine Lady's Mantle, Mountain Lady's Mantle | 2 | 3 |
| Alhagi mannifera | Manna Tree | 2 | 2 |
| Alhagi maurorum | Camel Thorn | 2 | 2 |
| Alkanna tinctoria | Alkanet, Alkanna | 1 | 2 |
| Allium acuminatum | Hooker's Onion, Tapertip onion | 3 | 2 |
| Allium aflatunense | Persian Onion, Ornamental Onion | 2 | 2 |
| Allium akaka | | 3 | 2 |
| Allium altaicum | | 3 | 2 |
| Allium ampeloprasum | Wild Leek, Broadleaf wild leek | 5 | 3 |
| Allium angulare | | 3 | 2 |
| Allium angulosum | Mouse Garlic | 3 | 2 |
| Allium atropurpureum | | 3 | 2 |
| Allium bisceptrum | Aspen Onion, Twincrest onion | 3 | 2 |
| Allium bodeanum | | 3 | 2 |
| Allium bolanderi | Bolander's Onion | 3 | 2 |
| Allium brevistylum | Shortstyle Onion | 3 | 2 |
| Allium canadense | Canadian Garlic, Meadow garlic, Fraser meadow garlic, Hyacinth meadow garlic | 4 | 2 |
| Allium canadense mobilense | Canadian Garlic | 5 | 2 |
| Allium carolinianum | | 3 | 2 |
| Allium cepa | Onion, Garden onion | 5 | 3 |
| Allium cepa aggregatum | Potato Onion | 4 | 3 |
| Allium cepa ascalonicum | Shallot | 5 | 3 |
| Allium cepa proliferum | Tree Onion, Walking Onion | 5 | 3 |
| Allium cernuum | Nodding Onion, New Mexican nodding onion | 5 | 2 |
| Allium chinense | Rakkyo | 4 | 2 |
| Allium condensatum | | 3 | 2 |
| Allium cupanii | | 3 | 2 |
| Allium douglasii | Douglas' Onion | 3 | 2 |
| Allium dregeanum | Wild Onion | 3 | 2 |
| Allium drummondii | Prairie Onion, Drummond's onion | 3 | 2 |
| Allium fistulosum | Welsh Onion | 5 | 2 |
| Allium flavum | Small Yellow Onion, Ornamental Onion | 2 | 2 |
| Allium galanthum | | 3 | 2 |
| Allium geyeri | Geyer's Onion, Bulbil onion | 3 | 2 |
| Allium geyeri tenerum | | 3 | 2 |
| Allium giganteum | Giant Onion, Ornamental Onion | 3 | 2 |
| Allium hookeri | | 3 | 2 |
| Allium kunthii | Kunth's onion | 3 | 2 |
| Allium kurrat | Egyptian Leek | 3 | 2 |
| Allium ledebourianum | | 3 | 2 |
| Allium macleanii | | 3 | 2 |
| Allium macropetalum | Largeflower Wild Onion | 3 | 2 |
| Allium macrostemon | No-Binu | 3 | 2 |
| Allium moly | Golden Garlic, Ornamental Onion | 4 | 2 |
| Allium monanthum | | 3 | 2 |
| Allium mutabile | Wild Onion | 3 | 2 |
| Allium neapolitanum | Daffodil Garlic, White garlic | 5 | 2 |
| Allium nutans | Blue Chives | 3 | 0 |
| Allium obliquum | Twistedleaf Garlic | 3 | 2 |
| Allium orientale | | 3 | 2 |
| Allium oschaninii | | 3 | 2 |
| Allium paradoxum | Few-Flowered Leek | 5 | 2 |
| Allium platycaule | Broadstemmed Onion | 3 | 2 |
| Allium porrum | Leek, Garden leek | 4 | 2 |
| Allium przewalskianum | | 3 | 2 |
| Allium ramosum | Chinese Chives | 4 | 2 |
| Allium roseum | Rosy Garlic | 3 | 2 |
| Allium rubellum | | 3 | 2 |
| Allium ruhmerianum | | 3 | 2 |
| Allium sacculiferum | | 3 | 2 |
| Allium sativum | Garlic, Cultivated garlic | 5 | 5 |
| Allium sativum ophioscorodon | Serpent Garlic | 5 | 5 |
| Allium schoenoprasum | Chives, Wild chives, Flowering Onion | 5 | 2 |
| Allium schoenoprasum sibiricum | Giant Chives | 5 | 2 |
| Allium scorodoprasum | Rocambole, Sand leek | 4 | 2 |
| Allium scorodoprasum rotundum | | 4 | 2 |
| Allium semenovii | | 3 | 2 |
| Allium senescens | German Garlic | 4 | 2 |
| Allium sphaerocephalon | Round-Headed Leek | 3 | 2 |
| Allium splendens | Miyama-Rakkyo | 3 | 2 |
| Allium stellatum | Prairie Onion, Autumn onion | 3 | 2 |
| Allium stipitatum | | 3 | 2 |
| Allium stracheyi | | 3 | 2 |
| Allium suaveolens | | 3 | 2 |
| Allium subhirsutum | | 4 | 2 |
| Allium textile | Textile Onion | 3 | 2 |
| Allium thunbergii | | 3 | 2 |
| Allium tricoccum | Wood Leek, Ramp | 4 | 2 |
| Allium tuberosum | Garlic Chives, Chinese chives, Oriental Chives, | 5 | 2 |
| Allium unifolium | One-Leaved Onion | 3 | 2 |
| Allium validum | Swamp Onion, Pacific onion | 3 | 2 |
| Allium victorialis | Alpine Leek, Victory onion | 4 | 2 |
| Allium wallichii | Jimbur | 3 | 2 |
| Alstroemeria aurea | Peruvian Lily | 1 | 0 |
| Alstroemeria haemantha | Purple-spot parrot-lily | 3 | 0 |
| Alstroemeria ligtu | Alstroemeria, St. Martin's Flower | 3 | 0 |
| Alstroemeria pelegrina | Peruvian Lily | 2 | 0 |
| Alstroemeria revoluta | | 2 | 0 |
| Alstroemeria spectabilis | | 2 | 0 |
| Alstroemeria versicolor | | 2 | 0 |
| Althaea cannabina | Palm-leaf marshmallow | 0 | 0 |
| Althaea officinalis | Marsh Mallow, Common marshmallow | 5 | 5 |
| Amaranthus albus | Prostrate Pigweed | 2 | 0 |
| Amaranthus bidentata | | 2 | 1 |
| Amaranthus blitoides | Mat Amaranth | 2 | 0 |
| Amaranthus blitum | Slender Amaranth, Purple amaranth | 4 | 2 |
| Amaranthus campestris | | 2 | 1 |
| Amaranthus caudatus | Love Lies Bleeding | 4 | 1 |
| Amaranthus cruentus | Purple Amaranth, Red amaranth | 4 | 2 |
| Amaranthus diacanthus | | 2 | 0 |
| Amaranthus dubius | Spleen Amaranth | 2 | 0 |
| Amaranthus frumentaceus | | 2 | 0 |
| Amaranthus graecizans | Spreading Pigweed, Mediterranean amaranth | 2 | 0 |
| Amaranthus hybridus | Rough Pigweed, Slim amaranth | 4 | 1 |
| Amaranthus hypochondriacus | Prince's Feather, Prince-of-wales feather | 4 | 3 |
| Amaranthus mangostanus | | 2 | 0 |
| Amaranthus mitchellii | Boggabri Weed | 2 | 0 |
| Amaranthus pallidiflorus | | 2 | 0 |
| Amaranthus palmeri | Careless Weed | 2 | 0 |
| Amaranthus polygamus | | 2 | 1 |
| Amaranthus polystachyus | | 2 | 0 |
| Amaranthus powellii | Powell's Amaranth | 2 | 0 |
| Amaranthus quitensis | Ataco | 2 | 0 |
| Amaranthus retroflexus | Pigweed, Redroot amaranth, Wild Beet | 3 | 2 |
| Amaranthus spinosus | Spiny Amaranth | 2 | 3 |
| Amaranthus standleyanus | Indehiscent Pigweed | 2 | 0 |
| Amaranthus tenuifolius | | 2 | 0 |
| Amaranthus thunbergii | Thunberg's Pigweed, Thunberg's amaranthus | 2 | 0 |
| Amaranthus torreyi | Torrey's amaranthus | 2 | 0 |
| Amaranthus tricolor | Chinese Spinach, Joseph's-coat, Fountain Plant, Tampala , Summer Poinsettia | 3 | 1 |
| Amaranthus viridis | Calalu, Slender amaranth | 3 | 2 |
| Ambrosia artemesiifolia | Roman Wormwood, Bitterweed, Blackweed, Carrot Weed, Hay Fever Weed, Stickeweed, Tassel Weed, Wild Ta | 2 | 3 |
| Ambrosia trifida | Giant Ragweed, Great ragweed, Texan great ragweed, Bitterweed, Bloodweed, Buffalo Weed, Horse Cane | 1 | 3 |
| Amianthium muscitoxicum | Fly Poison | 0 | 1 |
| Ammannia multiflora | | 1 | 0 |
| Ammi majus | Bishop's Weed, Large bullwort, Queen Anne's Lace, Bishop's Flower | 1 | 3 |
| Ammi visnaga | Visnaga. Khella. Bishop's Weed, Toothpickweed | 1 | 5 |
| Ammophila arenaria | Marram Grass, European beachgrass | 1 | 0 |
| Ammophila breviligulata | Beach Grass, American beachgrass | 0 | 0 |
| Amorpha canescens | Lead Plant | 2 | 2 |
| Amorpha nana | Dwarf Indigobush, Dwarf false indigo, Dwarf Indigo | 0 | 1 |
| Amorphophallus paeoniifolius | Elephant Yam, Whitespot giant arum | 4 | 2 |
| Amorphophallus rivieri | Devil's Tongue, Umbrella Arum, Leopard Palm, Snake Palm | 2 | 2 |
| Ampelodesmos mauritanicus | Mauritanian grass | 0 | 0 |
| Amphicarpaea bracteata | Hog Peanut, American hogpeanut | 5 | 1 |
| Amphicarpaea edgeworthii | | 4 | 0 |
| Amphicarpaea pitcheri | Hog Peanut | 5 | 0 |
| Amsinckia lycopsoides | Tarweed Fiddleneck | 1 | 0 |
| Amsinckia tesselata | Bristly Fiddleneck | 1 | 0 |
| Anabasis aphylla | | 0 | 1 |
| Anacyclus pyrethrum | Mount Atlas Daisy, Chamomile Spanish, Pellitory | 0 | 2 |
| Anagallis arvensis | Scarlet Pimpernel | 2 | 2 |
| Anaphalis margaritacea | Pearly Everlasting, Western pearly everlasting | 1 | 2 |
| Anchusa azurea | Anchusa, Italian bugloss | 2 | 1 |
| Anchusa officinalis | Alkanet, Common bugloss | 2 | 1 |
| Andropogon gerardii | Big Bluestem | 0 | 1 |
| Andropogon virginicus | Broomsedge Bluestem | 0 | 1 |
| Androsace sarmentosa | Rock Jasmine | 0 | 2 |
| Androstephium caeruleum | Blue Funnel Lily | 1 | 0 |
| Anemone narcissiflora | Narcissus-Flowered Anemone, Narcissus anemone | 1 | 0 |
| Anemone obtusiloba | | 0 | 1 |
| Anethum graveolens | Dill | 4 | 3 |
| Angelica japonica | | 3 | 0 |
| Angelica keiskei | | 2 | 0 |
| Angelica montana | | 2 | 0 |
| Anredera cordifolia | Madeira Vine, Heartleaf madeiravine | 2 | 0 |
| Anthemis arvensis | Corn Chamomile | 0 | 2 |
| Anthemis cotula | Mayweed, Stinking chamomile | 1 | 2 |
| Anthemis tinctoria | Yellow Camomile, Golden chamomile, Dyers' Chamomile, Golden Marguerite | 0 | 1 |
| Anthoxanthum odoratum | Sweet Vernal Grass | 2 | 2 |
| Anthriscus cerefolium | Chervil, Garden chervil | 3 | 2 |
| Anthyllis vulneraria | Kidney Vetch | 1 | 2 |
| Antirrhinum majus | Snapdragon, Garden snapdragon | 1 | 1 |
| Aphanes arvensis | Parsley Piert, Field parsley piert | 2 | 3 |
| Apios americana | Ground Nut | 5 | 1 |
| Apios fortunei | Hodo, Hodoimo | 5 | 1 |
| Apios priceana | Traveler's delight | 5 | 0 |
| Apium annuum | | 0 | 0 |
| Apium australe | | 3 | 0 |
| Apium filiforme | | 3 | 0 |
| Apium graveolens | Wild Celery. Ajmod, Ajwain-ka-patta (Indian) | 3 | 3 |
| Apium graveolens dulce | Celery | 4 | 2 |
| Apium graveolens rapaceum | Celeriac | 4 | 2 |
| Apium graveolens secalinum | Leaf Celery | 4 | 2 |
| Apium insulare | | 0 | 0 |
| Apium prostratum | Sea Celery, Prostrate marshwort | 3 | 0 |
| Apocynum venetum | | 0 | 2 |
| Arabis alpina | Alpine Rock Cress, Alpine rockcress | 2 | 0 |
| Arabis hirsuta | Hairy rockcress, Mountain rockcress, Creamflower rockcress | 1 | 0 |
| Arabis lyrata | Rock Cress, Kamchatka rockcress, Lyrate rockcress | 1 | 0 |
| Arabis sagittata | | 1 | 0 |
| Arabis serrata | | 1 | 0 |
| Arachis hypogaea | Peanut | 4 | 2 |
| Aralia nudicaulis | Wild Sarsaparilla | 4 | 3 |
| Araujia sericifera | Cruel Plant, White bladderflower | 1 | 0 |
| Arctium lappa | Great Burdock, Gobo | 4 | 5 |
| Arctostaphylos alpina | Alpine Bearberry | 2 | 1 |
| Arenaria serpyllifolia | Thyme-Leaf Sandwort | 2 | 2 |
| Argemone albiflora | White Prickly Poppy, Bluestem pricklypoppy | 0 | 1 |
| Argemone mexicana | Prickly Poppy, Mexican pricklypoppy | 1 | 3 |
| Argyranthemum foeniculaceum | | 1 | 0 |
| Aristolochia clematitis | Birthwort | 0 | 2 |
| Aristolochia contorta | Ma Dou Ling | 1 | 3 |
| Aristolochia debilis | Ma Dou Ling | 1 | 3 |
| Aristolochia fangchi | Guan Fang Chi | 0 | 2 |
| Aristolochia kaempferi | | 0 | 2 |
| Arjona patagonica | Macachi | 2 | 0 |
| Armeria maritima | Sea Thrift, Thrift seapink, California seapink, Interior seapink, Siberian sea thrift | 1 | 1 |
| Arnebia euchroma | | 0 | 2 |
| Arnica angustifolia alpina | Mountain Tobacco | 0 | 3 |
| Arnica montana | Arnica, Mountain arnica | 0 | 3 |
| Arracacia xanthorrhiza | Peruvian Parsnip, Arracacha | 4 | 0 |
| Artemisia annua | Qing Hao, Sweet sagewort | 1 | 4 |
| Artemisia anomala | | 0 | 2 |
| Artemisia argyi | | 0 | 2 |
| Artemisia biennis | Biennial Wormwood | 1 | 1 |
| Artemisia campestris | Field Southernwood | 0 | 2 |
| Artemisia campestris glutinosa | | 0 | 0 |
| Artemisia capillaris | Yin Chen Hao | 1 | 3 |
| Artemisia caruifolia | | 1 | 3 |
| Artemisia cina | Cina, Santonica | 0 | 3 |
| Artemisia dracunculoides | Russian Tarragon, Tarragon, French Tarragon | 2 | 1 |
| Artemisia dracunculus | Tarragon, French Tarragon | 4 | 2 |
| Artemisia filifolia | Sand Sage, Sand sagebrush | 0 | 2 |
| Artemisia frigida | Fringed Wormwood, Prairie sagewort | 2 | 2 |
| Artemisia glacialis | Glacier Wormwood | 1 | 2 |
| Artemisia gmelinii | Russian Wormwood, Gmelin's wormwood | 1 | 1 |
| Artemisia indica | | 1 | 3 |
| Artemisia japonica | | 1 | 2 |
| Artemisia keiskeana | | 2 | 1 |
| Artemisia laciniata | Siberian wormwood | 1 | 0 |
| Artemisia lactiflora | White Mugwort | 0 | 2 |
| Artemisia lancea | | 1 | 1 |
| Artemisia ludoviciana | White Sage, Louisiana Sage, Prairie Sage, Western Mugwort | 2 | 2 |
| Artemisia ludoviciana gnaphalodes | White Sage | 0 | 2 |
| Artemisia maritima | Sea Wormwood | 1 | 2 |
| Artemisia mexicana | Mexican White Sagebrush | 0 | 1 |
| Artemisia michauxiana | Mountain Sagewort, Michaux's wormwood | 1 | 1 |
| Artemisia monophylla | | 1 | 0 |
| Artemisia montana | | 1 | 0 |
| Artemisia nova | Black Sagebrush | 0 | 1 |
| Artemisia persica | | 0 | 1 |
| Artemisia princeps | | 2 | 1 |
| Artemisia rubripes | | 1 | 0 |
| Artemisia sacrorum | Russian Wormwood | 1 | 0 |
| Artemisia schmidtiana | Sagebrush, Silvermound, Wormwood, Mugwort | 1 | 0 |
| Artemisia scoparia | Redstem wormwood | 1 | 2 |
| Artemisia sibirica | | 1 | 0 |
| Artemisia sieversiana | | 1 | 2 |
| Artemisia stelleriana | Beach Wormwood, Oldwoman, Dusty Miller | 1 | 0 |
| Artemisia stolonifera | | 1 | 0 |
| Artemisia sylvatica | | 1 | 0 |
| Artemisia tilesii | Wormwood, Tilesius' wormwood | 1 | 2 |
| Artemisia tridentata | Sage Brush, Big sagebrush, Bonneville big sagebrush | 3 | 2 |
| Artemisia tripartita | Threetip Sage Brush, Wyoming threetip sagebrush | 2 | 1 |
| Artemisia umbelliformis | Alpine Wormwood | 1 | 0 |
| Artemisia vestita | Russian Wormwood | 0 | 1 |
| Artemisia wrightii | | 1 | 0 |
| Arthrocnemum fruticosum | Glasswort | 1 | 0 |
| Arthrocnemum subterminale | Glasswort, Parish's glasswort | 1 | 0 |
| Arthropodium cirrhatum | Rock-lily | 1 | 0 |
| Arthropodium milleflorum | Pale Vanilla Lily | 3 | 0 |
| Arthropodium minus | Small Vanilla Lily | 2 | 0 |
| Arundinella hookeri | | 0 | 0 |
| Arundinella nepalensis | | 0 | 0 |
| Asclepias asperula | Antelope Horns, Spider milkweed, Trailing Milkweed | 2 | 1 |
| Asclepias brachystephana | Bract milkweed | 0 | 0 |
| Asclepias californica | California Milkweed, Greene's milkweed | 2 | 1 |
| Asclepias decumbens | | 2 | 0 |
| Asclepias eriocarpa | Woollypod Milkweed | 2 | 2 |
| Asclepias erosa | Desert Milkweed | 2 | 0 |
| Asclepias galioides | Bedstraw Milkweed | 2 | 1 |
| Asclepias hallii | Purple Silkweed, Hall's milkweed | 3 | 1 |
| Asclepias incarnata | Swamp Milkweed, Swamp Butterfly Weed, Marsh Milkweed | 3 | 2 |
| Asclepias involucrata | Dwarf Milkweed | 2 | 1 |
| Asclepias lanceolata | Purple Silkweed, Fewflower milkweed | 2 | 1 |
| Asclepias latifolia | Broadleaf Milkweed | 0 | 1 |
| Asclepias mexicana | | 1 | 0 |
| Asclepias ovalifolia | Oval-leaf milkweed | 2 | 0 |
| Asclepias pumila | Low Milkweed, Plains milkweed | 2 | 1 |
| Asclepias purpurascens | Purple Milkweed | 2 | 1 |
| Asclepias quadrifolia | Fourleaf Milkweed | 2 | 2 |
| Asclepias rubra | Red Silkweed | 3 | 1 |
| Asclepias speciosa | Showy Milkweed | 3 | 2 |
| Asclepias subulata | Rush Milkweed | 0 | 1 |
| Asclepias sullivantii | Prairie milkweed | 0 | 0 |
| Asclepias syriaca | Common Milkweed, Silkweed, Milkweed | 3 | 2 |
| Asclepias tuberosa | Pleurisy Root, Butterfly milkweed, Rolfs' milkweed, Indian Paintbrush | 3 | 3 |
| Asclepias viridiflora | Green Milkweed, Green comet milkweed | 3 | 2 |
| Asparagus abyssinicus | | 2 | 0 |
| Asparagus acutifolius | Wild asparagus | 3 | 0 |
| Asparagus adscendens | | 2 | 1 |
| Asparagus albus | | 1 | 0 |
| Asparagus aphyllus | | 2 | 0 |
| Asparagus cochinchinensis | Chinese Asparagus | 3 | 3 |
| Asparagus dauricus | | 1 | 0 |
| Asparagus filicinus | Fern Asparagus | 2 | 1 |
| Asparagus maritimus | | 1 | 0 |
| Asparagus officinalis | Asparagus, Garden asparagus | 4 | 3 |
| Asparagus racemosus | Shatavari | 3 | 5 |
| Asparagus sauveolens | | 1 | 0 |
| Asparagus schoberioides | | 2 | 1 |
| Asparagus setaceus | Asparagus Fern, Common asparagus fern, Plumosa Fern | 1 | 0 |
| Asparagus stipularis | | 1 | 0 |
| Asparagus tenuifolius | | 1 | 0 |
| Asparagus verticillatus | | 2 | 0 |
| Asperula cynanchica | Squinancy Wort | 0 | 1 |
| Asperula tinctoria | Dyer's Woodruff | 0 | 0 |
| Asphodeline lutea | King's Spear, Yellow Asphodel, Jacob's Rod | 4 | 0 |
| Asphodelus aestivus | | 3 | 1 |
| Asphodelus albus | Asphodel, Gamón-blanco | 2 | 1 |
| Asphodelus fistulosus | Onionweed | 2 | 1 |
| Aster amellus | Ialian Aster | 2 | 2 |
| Aster diplostephioides | | 0 | 2 |
| Aster fastigiatus | | 2 | 1 |
| Aster glehnii | | 1 | 0 |
| Aster hauptii | | 1 | 0 |
| Aster kantoensis | | 2 | 0 |
| Aster koraiensis | | 1 | 0 |
| Aster lanceolatus | White Panicle Aster | 0 | 1 |
| Aster novae-angliae | New England Aster | 0 | 2 |
| Aster novi-belgii | Michaelmas Daisy, New York Aster | 0 | 0 |
| Aster puniceus | Purplestem Aster | 0 | 2 |
| Aster scaber | | 3 | 0 |
| Aster tataricus | Tartarian Aster | 1 | 3 |
| Aster tripolium | Sea Aster | 2 | 1 |
| Aster yomena | | 1 | 0 |
| Astilbe thunbergii | Astilbe | 1 | 0 |
| Astragalus aboriginorum | Indian Milkvetch | 2 | 0 |
| Astragalus adscendens | Persian Manna | 2 | 0 |
| Astragalus boeticus | Swedish Coffee | 2 | 0 |
| Astragalus brachycalyx | | 2 | 0 |
| Astragalus canadensis | Canadian Milkvetch, Shorttooth Canadian milkvetch, Morton's Canadian milkvetch | 3 | 2 |
| Astragalus carduchorum | | 2 | 0 |
| Astragalus chartostegius | | 1 | 0 |
| Astragalus chinensis | Hua Huang Qi, Chinese milkvetch | 0 | 2 |
| Astragalus christianus | | 2 | 0 |
| Astragalus complanatus | Bei Bian Huang Qi | 0 | 2 |
| Astragalus crassicarpus | Ground Plum, Groundplum milkvetch | 4 | 1 |
| Astragalus creticus | | 2 | 0 |
| Astragalus densissimus | | 2 | 0 |
| Astragalus diphysus | Specklepod Milkvetch, Freckled milkvetch | 3 | 0 |
| Astragalus echinus | | 1 | 0 |
| Astragalus edulis | Milkvetch | 2 | 0 |
| Astragalus exscapus | | 0 | 1 |
| Astragalus floridus | Duo Hua Huang Qi | 0 | 2 |
| Astragalus florulentus | | 2 | 0 |
| Astragalus garbancillo | | 0 | 0 |
| Astragalus globiflorus | | 2 | 0 |
| Astragalus glycyphyllos | Milk Vetch, Licorice milkvetch | 1 | 0 |
| Astragalus gummifer | Tragacanth, Gum tragacanth milkvetch | 2 | 3 |
| Astragalus hamosus | European milkvetch | 1 | 2 |
| Astragalus henryi | Qin Ling Huang Qi | 1 | 0 |
| Astragalus hoantchy | Wu La Te Huang Qi | 1 | 1 |
| Astragalus kurdicus | | 2 | 0 |
| Astragalus leioclados | | 2 | 0 |
| Astragalus massiliensis | | 3 | 0 |
| Astragalus membranaceus | Huang Qi | 0 | 5 |
| Astragalus microcephalus | | 2 | 0 |
| Astragalus mongholicus | Mongolian Astragalus | 0 | 3 |
| Astragalus multiceps | | 1 | 1 |
| Astragalus parnassi cylleneus | | 2 | 0 |
| Astragalus pictus-filifolius | Painted Milkvetch | 4 | 0 |
| Astragalus piletocladus | | 2 | 0 |
| Astragalus pycnocladus | | 2 | 0 |
| Astragalus reflexistipulus | | 2 | 0 |
| Astragalus shinanensis | | 1 | 0 |
| Astragalus sinicus | Chinese Milk Vetch | 3 | 1 |
| Astragalus sirinicus | | 2 | 0 |
| Astragalus stenonychioides | | 2 | 0 |
| Astragalus strobiliferus | | 2 | 0 |
| Astragalus stromatodes | | 2 | 0 |
| Astragalus turkmenorum | | 2 | 0 |
| Astragalus umbellatus | Tundra milkvetch | 2 | 0 |
| Astrebla pectinata | Barley Mitchell Grass | 1 | 0 |
| Astroloma conostephioides | | 0 | 0 |
| Astroloma serratifolium | Kondrung | 0 | 0 |
| Asyneuma pulchellum | | 0 | 0 |
| Asyneuma salignum | | 0 | 0 |
| Athamantha cretensis | Candy Carrot | 1 | 0 |
| Athamantha sicula | | 2 | 0 |
| Athamantha turbith | Candy Carrot | 2 | 0 |
| Atractylis gummifera | | 1 | 0 |
| Atractylodes japonica | Japanese Atractylodes | 2 | 3 |
| Atractylodes lancea | Cang Zhu | 1 | 3 |
| Atractylodes macrocephala | Bai Zhu | 0 | 3 |
| Atraphaxis spinosa | | 2 | 0 |
| Atriplex argentea | Silvery Orach, Silverscale saltbush, Stalked saltbush | 2 | 2 |
| Atriplex argentea expansa | Silverscale Saltbush | 2 | 0 |
| Atriplex californica | California Orach, California saltbush | 3 | 0 |
| Atriplex carnosa | Thickleaf Orach | 2 | 0 |
| Atriplex coronata | Crownscale | 2 | 0 |
| Atriplex dimorphostegia | | 2 | 0 |
| Atriplex elegans | Wheelscale Saltbush | 2 | 0 |
| Atriplex glabriuscula | Scotland orache, Maritime saltbush, Frankton's saltbush, Northeastern saltbush | 2 | 0 |
| Atriplex gmelinii | Gmelin's saltbush | 2 | 0 |
| Atriplex hastata | Hastate Orach | 3 | 0 |
| Atriplex hortensis | Orach, Garden orache | 4 | 2 |
| Atriplex lapathifolia | | 3 | 0 |
| Atriplex lentiformis | Quail Bush, Big saltbush, Quailbush, | 3 | 1 |
| Atriplex maximowicziana | Maximowicz's saltbush | 2 | 0 |
| Atriplex mucronata | | 2 | 0 |
| Atriplex nummularia | Giant Saltbush, Bluegreen saltbush | 3 | 2 |
| Atriplex nuttallii | Nuttall's Saltbush | 4 | 0 |
| Atriplex patula | Spreading Orach, Spear saltbush | 3 | 1 |
| Atriplex powellii | Powell's Saltweed | 2 | 0 |
| Atriplex saccaria | Sack Saltbush | 2 | 0 |
| Atriplex serenana | Bractscale, Davidson's bractscale | 2 | 0 |
| Atriplex subcordata | | 2 | 0 |
| Atriplex tatarica | Tatarian orache | 2 | 0 |
| Atriplex truncata | Wedgescale Saltbush | 2 | 0 |
| Avena abyssinica | Abyssinian Oat | 2 | 0 |
| Avena barbata | Slender Oat | 2 | 0 |
| Avena brevis | | 2 | 0 |
| Avena byzantina | Red Oat | 2 | 0 |
| Avena fatua | Wild Oats | 2 | 1 |
| Avena ludoviciana | Oats | 2 | 0 |
| Avena nuda | Naked Oat | 4 | 0 |
| Avena nudibrevis | | 2 | 0 |
| Avena orientalis | Hungarian Oat | 3 | 1 |
| Avena sativa | Oats, Common oat | 3 | 3 |
| Avena sterilis | Sterile Oats, Animated oat | 3 | 0 |
| Avena strigosa | Bristle Oats, Black oats | 2 | 0 |
| Avena wiestii | | 2 | 0 |
| Azorella caespitosa | | 2 | 1 |
| Azorella diapensioides | Llareta | 0 | 0 |
| Azorella filamentosa | | 1 | 0 |
| Azorella fuegiana | | 1 | 0 |
| Azorella lycopodioides | | 1 | 0 |
| Azorella selago | | 1 | 0 |
| Azorella trifurcata | | 1 | 0 |
| Azorella yareta | | 0 | 0 |
| Azorina vidalii | | 3 | 0 |
| Babiana plicata | Baboon Root | 1 | 0 |
| Ballota acetabulosa | Greek horehound | 0 | 0 |
| Ballota pseudodictamnus | | 0 | 0 |
| Balsamorhiza deltoidea | Deltoid Balsamroot | 4 | 1 |
| Balsamorhiza hookeri | Balsam Root, Hooker's balsamroot, Hairy balsamroot, Idaho balsamroot, Rabbithead balsamroot, Negle | 4 | 1 |
| Balsamorhiza incana | Hoary Balsamroot | 3 | 1 |
| Balsamorhiza sagittata | Oregon Sunflower, Arrowleaf balsamroot | 4 | 2 |
| Baphicacanthus cusia | | 0 | 2 |
| Baptisia australis | Wild Indigo, Blue wild indigo, Blue False Indigo | 0 | 2 |
| Baptisia bracteata | Plains Wild Indigo, Longbract wild indigo, False Indigo, Cream Wild Indigo | 0 | 2 |
| Baptisia lactea | Wild Indigo | 0 | 1 |
| Baptisia pendula | White False Indigo, False Indigo | 0 | 0 |
| Baptisia tinctoria | Wild Indigo, Horseflyweed | 1 | 3 |
| Barbarea australis | | 2 | 1 |
| Barbarea orthoceras | American Yellowrocket | 2 | 0 |
| Basella alba | Malabar Spinach, Indian Spinach, Ceylon spinach, | 4 | 2 |
| Bassia scoparia | Summer Cypress, Burningbush | 2 | 2 |
| Beckmannia syzigachne | American Sloughgrass | 2 | 0 |
| Benincasa hispida | Wax Gourd | 3 | 3 |
| Beta lomatogona | Beet | 2 | 0 |
| Beta trigyna | Beet | 2 | 0 |
| Beta vulgaris altissima | Sugar Beet | 4 | 2 |
| Beta vulgaris cicla | Spinach Beet | 4 | 2 |
| Beta vulgaris craca | Beetroot | 4 | 2 |
| Beta vulgaris flavescens | Swiss Chard | 4 | 2 |
| Beta vulgaris maritima | Sea Beet | 2 | 2 |
| Bidens aurea | Arizona beggarticks | 1 | 0 |
| Bidens bigelovii | Bigelow's beggarticks | 1 | 0 |
| Bidens bipinnata | Spanish Needles | 2 | 2 |
| Bidens biternata | | 0 | 1 |
| Bidens frondosa | Beggar Ticks, Devil's beggartick | 1 | 2 |
| Bidens parviflora | | 1 | 1 |
| Bidens pilosa | Beggar's Ticks, Blackjack, Hairy beggarticks | 2 | 2 |
| Bidens tripartita | Burr Marigold, Threelobe beggarticks | 2 | 2 |
| Bloomeria aurea | Golden Stars, Common goldenstar | 1 | 0 |
| Bloomeria crocea | Golden Stars, Common goldenstar | 1 | 0 |
| Bobartia indica | Rush Iris | 0 | 0 |
| Boehmeria cylindrica | False Nettle, Smallspike false nettle | 0 | 0 |
| Boehmeria glomerulifera | | 0 | 0 |
| Boehmeria longispica | | 1 | 1 |
| Boehmeria macrophylla | | 0 | 0 |
| Boehmeria nipononivea | Ramie | 1 | 1 |
| Boehmeria nivea | Ramie, Chinese Grass, Chinese Silk Plant | 2 | 2 |
| Boehmeria spicata | | 1 | 0 |
| Boehmeria tricuspis | | 1 | 1 |
| Boenninghausenia albiflora | | 0 | 2 |
| Boerhavia diffusa | Tar Vine, Red spiderling | 2 | 4 |
| Bolax gummifera | Bolax | 2 | 1 |
| Bongardia chrysogonum | | 2 | 1 |
| Boopsis australis | | 2 | 0 |
| Borago officinalis | Borage, Common borage,Cool-tankard, Tailwort | 3 | 3 |
| Bouteloua gracilis | Blue Grama | 1 | 1 |
| Brassica balearica | | 1 | 0 |
| Brassica carinata | Abyssinian Cabbage | 4 | 2 |
| Brassica cretica | Mustard | 2 | 0 |
| Brassica elongata | Elongated mustard | 2 | 0 |
| Brassica juncea | Brown Mustard | 4 | 2 |
| Brassica juncea crispifolia | Curled Mustard | 4 | 2 |
| Brassica juncea foliosa | Leaf Mustard | 4 | 2 |
| Brassica juncea multiceps | Green In The Snow | 4 | 2 |
| Brassica juncea napiformis | Root Mustard | 4 | 2 |
| Brassica juncea rugosa | Head Mustard | 4 | 2 |
| Brassica juncea strumata | Large Petiole Mustard | 4 | 2 |
| Brassica juncea tumida | Swollen-Stem Mustard | 4 | 2 |
| Brassica napus | Colza, Rape | 3 | 2 |
| Brassica napus arvensis | Coleseed | 3 | 2 |
| Brassica napus napobrassica | Swede | 4 | 2 |
| Brassica napus napus | Rape | 3 | 2 |
| Brassica napus pabularia | Rape Kale | 3 | 2 |
| Brassica nigra | Black Mustard | 3 | 3 |
| Brassica oleracea | Wild Cabbage, Broccoli, Tronchuda cabbage, Brussels sprouts, Kohlrabi, Sprouting broccoli | 4 | 2 |
| Brassica oleracea alboglabra | Chinese Kale | 3 | 0 |
| Brassica oleracea botrytis | Cauliflower | 4 | 0 |
| Brassica oleracea botrytis aparagoides | Nine Star Perennial Broccoli | 4 | 0 |
| Brassica oleracea capitata | Cabbage,Ornamental Cabbage, Red Cabbage, Savoy Cabbage | 4 | 0 |
| Brassica oleracea costata | Couve Tronchuda | 3 | 0 |
| Brassica oleracea gemmifera | Brussels Sprouts | 4 | 0 |
| Brassica oleracea gongylodes | Kohl Rabi | 3 | 1 |
| Brassica oleracea italica | Broccoli | 5 | 0 |
| Brassica oleracea medullosa | Marrow-Stem Kale | 4 | 0 |
| Brassica oleracea palmifolia | Jersey Kale | 3 | 0 |
| Brassica oleracea ramosa | Perpetual Kale | 4 | 0 |
| Brassica oleracea sabauda | Savoy Cabbage | 4 | 0 |
| Brassica oleracea sabellica | Curly Kale | 4 | 0 |
| Brassica rapa | Turnip, Field mustard, Toria, Yellow sarson | 3 | 2 |
| Brassica rapa campestris | Wild Turnip | 2 | 1 |
| Brassica rapa chinensis | Pak Choi | 4 | 1 |
| Brassica rapa dichotoma | Indian Rape | 2 | 0 |
| Brassica rapa narinosa | Chinese Savoy | 3 | 0 |
| Brassica rapa nipposinica | Mizuna | 4 | 0 |
| Brassica rapa oleifera | Stubble Turnip | 2 | 0 |
| Brassica rapa parachinensis | False Pak Choi | 4 | 0 |
| Brassica rapa pekinensis | Chinese Cabbage | 4 | 1 |
| Brassica rapa perviridis | Mustard Spinach | 3 | 0 |
| Brassica rapa trilocularis | Indian Colza | 2 | 0 |
| Brassica tournefortii | Wild Turnip-Rape, Asian mustard | 2 | 0 |
| Brodiaea coronaria | Californian Hyacinth, Crown brodiaea, Indian Valley brodiaea | 3 | 0 |
| Bromus carinatus | Californian Brome | 1 | 0 |
| Bromus inermis | Smooth Brome, Pumpelly's brome | 0 | 0 |
| Bromus japonicus | Japanese Chess, Field brome | 1 | 0 |
| Bromus mango | Mango, Mango brome | 2 | 0 |
| Bromus marginatus | Mountain Brome | 1 | 0 |
| Bromus rigidus | Ripgut Brome | 1 | 0 |
| Bromus tectorum | Cheat Grass, Downy Brome | 1 | 1 |
| Bromus thominii | Soft Brome | 1 | 0 |
| Buglossoides arvensis | Field Gromwell, Corn gromwell | 1 | 1 |
| Bulbinella hookeri | Maori Onion | 1 | 0 |
| Bulbinopsis bulbosa | Golden Lily | 3 | 0 |
| Bunchosia armeniaca | Ameixa Do Peru | 1 | 0 |
| Bunias erucago | Corn Rocket, Crested wartycabbage | 3 | 0 |
| Bunium bulbocastanum | Pig Nut, Earth-nut | 4 | 1 |
| Bunium ferulaceum | | 2 | 0 |
| Bunium persicum | Black Caraway, Black Cumin | 3 | 0 |
| Bupleurum chinense | Bei Chai Hu | 2 | 3 |
| Bupleurum falcatum | Thorow-Wax | 2 | 2 |
| Bupleurum longiradiatum | | 1 | 2 |
| Bupleurum octoradiatum | | 1 | 1 |
| Bupleurum rotundifolium | Hare's Ear | 1 | 0 |
| Burchardia umbellata | Milkmaids | 2 | 0 |
| Caesalpinia gilliesii | Bird Of Paradise, Bird-of-paradise shrub | 0 | 1 |
| Caesia calliantha | Blue Grass Lily | 1 | 0 |
| Caesia parviflora | Blue Grass Lily | 1 | 0 |
| Caesia vittata | Blue Grass Lily | 1 | 0 |
| Cakile edentula | Sea Rocket, American searocket, Harper's searocket | 2 | 0 |
| Cakile maritima | Sea Rocket, European searocket | 2 | 0 |
| Calamintha nepeta | Lesser Calamint | 3 | 2 |
| Calamintha sylvatica | Calamint, Woodland calamint | 3 | 2 |
| Calandrinia balonensis | | 2 | 0 |
| Calandrinia ciliata | Redmaids, Fringed redmaids | 2 | 0 |
| Calandrinia ciliata menziesii | Redmaids | 2 | 0 |
| Calandrinia polyandra | Parakeelya | 2 | 0 |
| Calandrinia remota | | 2 | 0 |
| Calceolaria arachnoidea | | 0 | 1 |
| Calceolaria thyrsiflora | | 0 | 1 |
| Calendula arvensis | Field Marigold | 2 | 3 |
| Calendula officinalis | calendula, Pot Marigold | 3 | 5 |
| Calligonum aphyllum | | 2 | 0 |
| Callirhoe digitata | Finger Poppy Mallow, Winecup | 2 | 0 |
| Callirhoe involucrata | Poppy Mallow, Purple poppymallow, Winecup, Finger Poppy Mallow | 3 | 2 |
| Callirhoe leiocarpa | Tall Poppy-Mallow | 2 | 0 |
| Calystegia soldanella | Sea Bindweed, Seashore false bindweed | 1 | 1 |
| Camassia leichtlinii | Wild Hyacinth, Large camas, Suksdorf's large camas | 4 | 0 |
| Camassia quamash | Quamash, Small camas, Utah small camas, Walpole's small camas | 5 | 1 |
| Camassia scilloides | Atlantic Camas | 3 | 0 |
| Camelina sativa | Gold Of Pleasure | 3 | 0 |
| Campanula cochleariifolia | Fairies Thimbles | 4 | 0 |
| Campanula edulis | | 2 | 0 |
| Campanula fenestrellata | Adriatic Bellflower | 4 | 0 |
| Campanula garganica | Adriatic Bellflower | 3 | 0 |
| Campanula glomerata | Clustered Bellflower, Dane's blood, Clustered Bellflower | 4 | 0 |
| Campanula lactiflora | Milky Bellflower | 3 | 0 |
| Campanula lasiocarpa | Mountain harebell | 2 | 0 |
| Campanula medium | Canterbury Bells, Cup and Saucer, Canterbury Bells | 2 | 0 |
| Campanula parryi | Parry's Bellflower, Idaho bellflower | 1 | 1 |
| Campanula punctata | Chinese Rampion, Spotted bellflower | 4 | 0 |
| Campanula pyramidalis | Chimney Bellflower | 3 | 0 |
| Campanula rapunculus | Rampion | 4 | 0 |
| Campanula rotundifolia | Harebell, Bluebell bellflower | 1 | 1 |
| Campanula takesimana | Korean Bellflower | 4 | 0 |
| Campanula versicolor | | 5 | 0 |
| Canna edulis | Achira, Indian shot | 3 | 0 |
| Canna glauca | Louisiana Canna, Maraca amarilla | 2 | 0 |
| Canna indica | Indian Shot | 4 | 2 |
| Cannabis sativa | Hemp, Marijuana | 4 | 4 |
| Capsella bursa-pastoris | Shepherd's Purse | 3 | 2 |
| Capsicum annuum | Sweet Pepper, Cayenne Pepper, Chili Pepper, Christmas Pepper, Red Pepper, Ornamental Chili Pepper | 4 | 3 |
| Capsicum baccatum | Locoto, Aji | 3 | 3 |
| Capsicum frutescens | Tabasco Pepper, Cayenne pepper | 3 | 4 |
| Capsicum pubescens | Tree Pepper, Rocoto | 3 | 3 |
| Cardamine amaraeformis | | 2 | 0 |
| Cardamine bonariensis | | 2 | 0 |
| Cardamine fauriei | | 2 | 0 |
| Cardamine glacialis | | 2 | 0 |
| Cardamine hirsuta | Hairy Bittercress | 3 | 0 |
| Cardamine loxostemonoides | Cuckoo Flower | 1 | 0 |
| Cardamine nipponica | | 1 | 0 |
| Cardamine pennsylvanica | Bittercress | 2 | 1 |
| Cardaria draba | Hoary Cress, Whitetop | 2 | 1 |
| Carduus cernuus | | 1 | 0 |
| Carduus crispus | Welted Thistle, Curly plumeless thistle | 1 | 1 |
| Carduus nutans | Musk Thistle, Nodding plumeless thistle | 2 | 2 |
| Carex arenaria | Sand Sedge | 2 | 2 |
| Carex kobomugi | Japanese sedge | 1 | 0 |
| Carex macrocephala | Largehead sedge | 1 | 0 |
| Carex riparia | Great Pond Sedge | 1 | 0 |
| Carlina acanthifolia | | 1 | 0 |
| Carlina acaulis | Stemless Carline Thistle | 2 | 2 |
| Carlina vulgaris | Carline Thistle | 1 | 1 |
| Carpobrotus acinaciformis | Hottentot Fig | 2 | 0 |
| Carpobrotus aequilaterus | Sea Fig | 2 | 0 |
| Carpobrotus deliciosus | Sweet Hottentot Fig | 2 | 0 |
| Carpobrotus edulis | Hottentot Fig, | 2 | 2 |
| Carpobrotus glaucescens | Pigface | 3 | 2 |
| Carpobrotus modestus | Inland Pigface | 0 | 0 |
| Carpobrotus rossii | Karkalla | 0 | 0 |
| Carpobrotus virescens | Coastal Pigface | 0 | 0 |
| Carum carvi | Caraway | 4 | 3 |
| Cassiope tetragona | White Arctic Mountain Heather | 0 | 0 |
| Castilleja linariaefolia | Wyoming Indian Paintbrush | 1 | 2 |
| Caucalis platycarpos | Small Bur-Parsley, Carrot bur parsley | 2 | 0 |
| Caulanthus glaucus | Glaucous wild cabbage | 1 | 0 |
| Cavendishia alatum | | 1 | 0 |
| Ceanothus americanus | New Jersey Tea, Wild Snowball | 3 | 3 |
| Ceanothus cuneatus | Buckbrush, Sedgeleaf buckbrush, Monterey ceanothus | 2 | 1 |
| Ceanothus fendleri | Fendler's Ceanothus | 2 | 1 |
| Ceanothus impressus | Santa Barbara Ceanothus | 0 | 0 |
| Ceanothus sanguineus | Oregon Tea Tree, Redstem ceanothus | 2 | 1 |
| Celosia argentea cristata | Lagos Spinach, Common Cockscomb | 4 | 3 |
| Centaurea acaulis | | 0 | 0 |
| Centaurea calcitrapa | Common Star Thistle, Red star-thistle | 1 | 1 |
| Centaurea chamaerhaponticum | | 2 | 0 |
| Centaurea cyanus | Cornflower, Garden cornflower, Blue Bottle, Cornflower | 2 | 2 |
| Centaurea depressa | Iranian knapweed | 2 | 0 |
| Centaurea iberica | Iberian Star Thistle, Iberian knapweed | 1 | 2 |
| Centaurea jacea | Brown Knapweed | 1 | 1 |
| Centaurea melitensis | Maltese Star Thistle | 0 | 1 |
| Centaurea nigra | Black Knapweed, Lesser knapweed | 1 | 2 |
| Centaurea raphanina | | 1 | 0 |
| Centaurea scabiosa | Greater Knapweed | 0 | 2 |
| Centaurea solstitialis | St. Barnaby's Thistle, Yellow star-thistle | 1 | 1 |
| Centaurium spicatum | Spiked centaury | 0 | 1 |
| Centella asiatica | Gotu Kola, Spadeleaf | 2 | 5 |
| Centipeda minima | Spreading Sneeze Weed | 0 | 2 |
| Centranthus macrosiphon | | 2 | 0 |
| Centranthus ruber | Red Valerian, Fox's Brush, Jupiter's Beard | 2 | 1 |
| Cephalaria syriaca | Makhobeli, Syrian cephalaria | 2 | 0 |
| Cerastium arvense | Field Mouse-Ear Chickweed, Field chickweed | 0 | 1 |
| Cerastium furcatum | | 2 | 0 |
| Cerastium holosteoides | Common Mouse-Ear Chickweed | 2 | 0 |
| Cerastium semidecandrum | Little Mouse-Ear Chickweed, Fivestamen chickweed | 2 | 0 |
| Cerastium viscosum | sticky chickweed | 2 | 1 |
| Chaenactis douglasii | Morning Brides, Douglas' dustymaiden, Alpine dustymaiden | 0 | 2 |
| Chaerophyllum bulbosum | Turnip-Rooted Chervil | 3 | 0 |
| Chaerophyllum tuberosum | Sham | 1 | 0 |
| Chamaecrista fasciculata | Golden Cassia, Partridge pea | 0 | 0 |
| Chamaemelum nobile | Chamomile, Roman chamomile | 2 | 5 |
| Chamaesaracha coronopus | Greenleaf Five Eyes | 1 | 1 |
| Chasmanthium latifolium | Indian Woodoats, Wild Oats Grass, North American Wild Oats, Northern Sea Oats, Spanglegrass River Oa | 1 | 0 |
| Cheilanthes pteridioides | Ressurection Fern | 1 | 0 |
| Chenopodium acuminatum | | 2 | 0 |
| Chenopodium album | Fat Hen, Lambsquarters | 3 | 2 |
| Chenopodium ambrosioides | Mexican Tea | 2 | 3 |
| Chenopodium ambrosioides anthelminticum | Wormseed | 2 | 3 |
| Chenopodium auricomum | Queensland Bluebush | 2 | 0 |
| Chenopodium berlandieri | Southern Huauzontle, Pitseed goosefoot, Nuttall's goosefoot, Bush's goosefoot, Zschack's goosefoot | 2 | 0 |
| Chenopodium botrys | Jerusalem Oak, Jerusalem oak goosefoot | 2 | 2 |
| Chenopodium bushianum | Bush's goosefoot | 2 | 0 |
| Chenopodium californicum | California Goosefoot | 2 | 1 |
| Chenopodium canihua | | 2 | 0 |
| Chenopodium capitatum | Strawberry Blite, Blite goosefoot | 3 | 1 |
| Chenopodium cristatum | Crested Goosefoot | 2 | 1 |
| Chenopodium ficifolium | Fig-Leaved Goosefoot | 2 | 0 |
| Chenopodium foliosum | Leafy goosefoot | 3 | 0 |
| Chenopodium fremontii | Goosefoot, Fremont's goosefoot, Pringle's goosefoot | 2 | 0 |
| Chenopodium giganteum | Tree Spinach | 3 | 0 |
| Chenopodium glaucum | Oak-Leaved Goosefoot | 2 | 0 |
| Chenopodium graveolens | Foetid Goosefoot | 2 | 1 |
| Chenopodium hybridum | | 2 | 1 |
| Chenopodium incanum | Mealy Goosefoot | 2 | 0 |
| Chenopodium leptophyllum | Narrow Leaved Goosefoot | 2 | 0 |
| Chenopodium murale | Nettleleaf Goosefoot | 2 | 0 |
| Chenopodium nuttalliae | Huauzontle, Nuttall's goosefoot | 4 | 0 |
| Chenopodium opulifolium | Seaport goosefoot | 2 | 0 |
| Chenopodium overi | Over's goosefoot | 2 | 0 |
| Chenopodium pallidicaule | Cañihua | 3 | 0 |
| Chenopodium polyspermum | All-Seed, Manyseed goosefoot | 2 | 0 |
| Chenopodium pratericola | Desert Goosefoot | 2 | 0 |
| Chenopodium quinoa | Quinoa, Goosefoot, Pigweed, Inca Wheat | 5 | 0 |
| Chenopodium rubrum | Red Goosefoot | 2 | 0 |
| Chenopodium schraderianum | | 2 | 1 |
| Chenopodium simplex | Mapleleaf goosefoot | 2 | 0 |
| Chenopodium stenophyllum | | 2 | 0 |
| Chenopodium suecicum | | 2 | 0 |
| Chenopodium urbicum | City goosefoot | 2 | 0 |
| Chenopodium virgatum | | 2 | 0 |
| Chenopodium viride | White Goosefoot, Pigweed | 2 | 0 |
| Chenopodium vulvaria | Stinking Goosefoot. Arrach - Wormseed | 2 | 1 |
| Chesneya nubigena | | 1 | 0 |
| Chiliotrichum diffusum | | 0 | 1 |
| Chlorogalum parviflorum | Smallflower Soapplant | 2 | 0 |
| Chlorogalum pomeridianum | Soap Lily, Wavyleaf soap plant | 3 | 2 |
| Chondrilla chondrilloides | | 1 | 0 |
| Chondrilla juncea | Naked Weed, Rush skeletonweed | 3 | 1 |
| Chorispora sabulosa | | 1 | 0 |
| Chorispora tenella | Musk Mustard, Crossflower | 2 | 0 |
| Chrozophora obliqua | | 1 | 1 |
| Chrozophora tinctoria | Dyer's Croton, Giradol | 1 | 0 |
| Chrysanthemum carinatum | Tricolor Chrysanthemum, Painted Daisy, Summer Chrysanthemum | 2 | 0 |
| Chrysanthemum coronarium | Chop-Suey Greens | 3 | 2 |
| Chrysanthemum coronarium spatiosum | Chop-Suey Greens | 3 | 2 |
| Chrysanthemum marshallii | | 0 | 0 |
| Chrysanthemum segetum | Corn Marigold | 1 | 0 |
| Chrysosplenium carnosum | | 0 | 2 |
| Cicer arietinum | Chick Pea | 4 | 1 |
| Cicer microphyllum | | 2 | 0 |
| Cicerbita alpina | Blue Sow Thistle | 2 | 1 |
| Cichorium intybus | Chicory, Radicchio, Succory, Witloof | 4 | 3 |
| Cichorium spinosum | | 2 | 0 |
| Cirsium acaulon | Stemless Thistle | 0 | 1 |
| Cirsium amplexifolium | Dakiba-Hime-Azami | 1 | 0 |
| Cirsium arvense | Creeping Thistle, Canada thistle | 2 | 2 |
| Cirsium brevicaule | | 1 | 0 |
| Cirsium buergeri | | 1 | 0 |
| Cirsium chinense | | 1 | 0 |
| Cirsium coreanum | | 1 | 0 |
| Cirsium dipsacolepis | | 1 | 0 |
| Cirsium eatoni | Eaton's Thistle | 1 | 1 |
| Cirsium eriophorum | Wooly Thistle | 2 | 0 |
| Cirsium foliosum | Elk thistle | 3 | 0 |
| Cirsium hookerianum | White Thistle | 2 | 0 |
| Cirsium japonicum | No-Azami, Japanese thistle | 2 | 2 |
| Cirsium kamtschaticum | Kamchatka thistle | 1 | 0 |
| Cirsium lepskyle | | 1 | 0 |
| Cirsium lineare | | 1 | 0 |
| Cirsium maackii | | 1 | 0 |
| Cirsium maritimum | | 1 | 0 |
| Cirsium nipponicum | | 1 | 1 |
| Cirsium occidentale | Cobwebby Thistle, Snowy thistle, Compact cobwebby thistle | 2 | 0 |
| Cirsium ochrocentrum | Yellow Spined Thistle | 2 | 2 |
| Cirsium oligophyllum | | 2 | 0 |
| Cirsium pallidum | Pale Thistle | 2 | 1 |
| Cirsium pectinellum | | 1 | 0 |
| Cirsium pendulum | | 1 | 0 |
| Cirsium purpuratum | | 1 | 0 |
| Cirsium schantarense | | 1 | 0 |
| Cirsium scopulorum | Mountain thistle | 1 | 0 |
| Cirsium serratuloides | | 1 | 0 |
| Cirsium setosum | | 1 | 1 |
| Cirsium spicatum | | 3 | 1 |
| Cirsium spinosum | | 1 | 0 |
| Cirsium suffultum | Tsukushi-Azami | 1 | 0 |
| Cirsium tuberosum | Tuberous Thistle | 3 | 0 |
| Cirsium undulatum | Wavy-Leaved Thistle, Tracy's thistle | 3 | 1 |
| Cirsium verutum | | 1 | 1 |
| Cirsium vulgare | Common Thistle, Bull thistle, Dodder, Boar Thistle, Bull Thistle | 2 | 1 |
| Cistus albidus | Rock Rose | 1 | 0 |
| Cistus creticus | Rock Rose, Cretan rockrose | 2 | 2 |
| Citrullus lanatus | Water Melon | 4 | 3 |
| Clarkia biloba | Twolobe clarkia, Mariposa clarkia, Brandegee's clarkia | 1 | 1 |
| Clarkia pulchella | Pinkfairies | 1 | 0 |
| Clarkia purpurea | Winecup clarkia | 1 | 0 |
| Clarkia unguiculata | Elegant Fairyfan, Elegant clarkia | 1 | 0 |
| Claytonia acutifolia | Bering Sea Spring Beauty | 3 | 0 |
| Claytonia caroliniana | Broad-Leaved Spring Beauty, Carolina springbeauty | 3 | 0 |
| Claytonia lanceolata | Lanceleaf Spring Beauty, Idaho springbeauty, Pacific springbeauty, Peirson's springbeauty | 3 | 0 |
| Claytonia megarhiza | Alpine Spring Beauty | 3 | 0 |
| Claytonia scammaniana | Scamman's Claytonia, Scamman's springbeauty | 2 | 0 |
| Claytonia tuberosa | Tuberous Spring Beauty | 3 | 0 |
| Claytonia umbellata | Great Basin Spring Beauty | 2 | 0 |
| Claytonia virginica | Spring Beauty, Virginia springbeauty, Hammond's claytonia, Yellow Virginia springbeauty | 3 | 1 |
| Cleome gynandra | African Spider Flower, Spiderwisp | 0 | 2 |
| Cleome lutea | Yellow Spiderflower, Jones spiderflower | 2 | 1 |
| Cleome monophylla | | 2 | 1 |
| Cleome ornithopodioides | Bird spiderflower | 1 | 0 |
| Cleome serrulata | Rocky Mountain Beeplant | 3 | 1 |
| Cleome viscosa | Tickweed, Asian spiderflower | 2 | 2 |
| Clinopodium vulgare | Wild Basil | 2 | 1 |
| Cneorum tricoccon | Spurge Olive | 0 | 1 |
| Cnicus benedictus | Blessed Thistle | 2 | 3 |
| Cnidium japonicum | | 1 | 0 |
| Cnidium monnieri | She Chuang Zi, Monnier's snowparsley | 1 | 3 |
| Cnidium officinale | | 1 | 2 |
| Cochlearia anglica | Long Leaved Scurvy Grass | 1 | 0 |
| Cochlearia danica | Danish Scurvy Grass | 1 | 1 |
| Cochlearia macrocarpa | | 1 | 0 |
| Cochlearia oblongifolia | | 1 | 0 |
| Cochlearia officinalis | Scurvy Grass, Spoonwort | 1 | 2 |
| Cochlearia scotica | | 1 | 0 |
| Codonopsis javanica | | 0 | 1 |
| Codonopsis tubulosa | | 0 | 3 |
| Coelopleurum gmelini | | 2 | 0 |
| Coelopleurum lucidum | | 2 | 1 |
| Coix lacryma-jobi | Job's Tears | 3 | 3 |
| Colchicum bivonae | | 0 | 0 |
| Colchicum luteum | | 0 | 2 |
| Coleus edulis | Gala Dinich | 1 | 0 |
| Coluria geoides | | 2 | 0 |
| Comandra pallida | Pale Bastard Toadflax | 1 | 1 |
| Comandra richardsiana | Bastard Toad Flax | 1 | 0 |
| Comandra umbellata | Bastard Toad Flax, California bastard toadflax, Pale bastard toadflax | 1 | 1 |
| Commelina coelestis | Blue Spider Wort, Commelina | 2 | 0 |
| Commelina communis | Day Flower, Asiatic dayflower | 3 | 2 |
| Commelina dianthifolia | Birdbill Dayflower | 2 | 1 |
| Commelina elliptica | | 2 | 0 |
| Commelina erecta | Slender Day-Flower, Whitemouth dayflower | 2 | 0 |
| Commelina erecta angustifolia | Whitemouth Dayflower | 2 | 1 |
| Commelina tuberosa | Commelina | 2 | 0 |
| Commelina virginica | Virginia Day-Flower | 2 | 0 |
| Conandron ramondioides | | 1 | 0 |
| Conanthera bifolia | | 2 | 0 |
| Conanthera campanulata | | 2 | 0 |
| Conioselinum pacificum | Pacific Hemlock-Parsley | 2 | 1 |
| Conioselinum vaginatum | | 0 | 1 |
| Conopodium majus | Pignut | 3 | 0 |
| Conradina verticillata | Cumberland Rosemary | 1 | 0 |
| Conringia orientalis | Hare's Ear Mustard | 2 | 0 |
| Consolida ambigua | Larkspur, Doubtful knight's-spur, Rocket Larkspur | 0 | 2 |
| Consolida regalis | Larkspur, Royal knight's-spur | 0 | 3 |
| Convolvulus tricolor | Dwarf Morning Glory, Bush Morning Glory | 0 | 0 |
| Conyza canadensis | Canada Fleabane, Canadian horseweed | 1 | 3 |
| Coprosma acerosa | Sand Coprosma | 2 | 0 |
| Coprosma atropurpurea | | 1 | 0 |
| Coprosma billardieri | Native Currant | 1 | 0 |
| Corchorus capsularis | Jute | 3 | 2 |
| Corchorus olitorius | Jew's Mallow, Nalta jute | 4 | 2 |
| Corema album | Portuguese Crowberry | 1 | 0 |
| Corema conradii | Poverty Grass, Broom crowberry | 1 | 0 |
| Coreopsis calliopsidea | Leafstem tickseed | 0 | 0 |
| Coreopsis gigantea | Giant coreopsis, Sea Dahlia | 0 | 0 |
| Coreopsis tinctoria | Coreopsis, Golden tickseed, Atkinson's tickseed, Dyer's Coreopsis, Plains Coreopsis, Annual Coreops | 1 | 1 |
| Coreopsis tinctoria atkinsoniana | Coreopsis | 1 | 1 |
| Coriandrum sativum | Coriander - Dhania - Cilantro, Coriander | 4 | 4 |
| Corispermum declinatum | | 1 | 0 |
| Coronilla scorpioides | Annual Scorpion Vetch, Yellow crownvetch | 0 | 1 |
| Coronopus didymus | Swine Wartcress, Lesser swinecress | 2 | 0 |
| Coronopus squamatus | Crowfoot, Greater swinecress | 1 | 0 |
| Corrigiola littoralis | Strapwort | 1 | 1 |
| Corydalis vaginans | | 0 | 1 |
| Cosmos bipinnatus | Cosmos, Garden cosmos, Common Cosmos | 0 | 0 |
| Cousinia thomsonii | | 1 | 0 |
| Crambe abyssinica | Abyssinian Kale, Crambe | 1 | 0 |
| Crambe kotschyana | | 2 | 1 |
| Crambe maritima | Sea Kale | 4 | 0 |
| Crambe orientalis | | 3 | 0 |
| Crambe tatarica | Tartar Bread Plant | 3 | 0 |
| Crepis bursifolia | Italian hawksbeard | 2 | 0 |
| Crepis runcinata | Fiddleleaf hawksbeard, Anderson's hawksbeard, Barber's hawksbeard, Hall's hawksbeard | 1 | 0 |
| Crepis sancta | | 2 | 0 |
| Crepis tectorum | Narrow-Leaved Hawksbeard | 1 | 0 |
| Crepis vesicaria | Beaked hawksbeard | 1 | 0 |
| Crinum asiaticum | Asian Poison Bulb | 0 | 1 |
| Crinum bulbispermum | Hardy swamplily | 1 | 0 |
| Crinum flaccidum | Murray Lily | 2 | 0 |
| Crithmum maritimum | Rock Samphire | 2 | 2 |
| Crocus cancellatus | | 1 | 0 |
| Crocus kotschyanus | | 1 | 0 |
| Crocus nudiflorus | | 2 | 3 |
| Crocus sativus | Saffron | 3 | 3 |
| Crocus serotinus | | 2 | 0 |
| Crotalaria sessiliflora | | 1 | 1 |
| Cucumis anguria | Gherkin, West Indian gherkin | 3 | 1 |
| Cucumis melo | Melon, Cantaloupe | 4 | 2 |
| Cucumis melo agrestis | Wild Melon | 3 | 2 |
| Cucumis melo cantalupensis | Cantaloupe Melon | 4 | 2 |
| Cucumis melo chito | Orange Melon | 3 | 2 |
| Cucumis melo conomon | Pickling Melon | 4 | 2 |
| Cucumis melo flexuosus | Serpent Melon | 4 | 2 |
| Cucumis melo inodorus | Honeydew Melon | 4 | 2 |
| Cucumis melo momordica | Snap Melon | 4 | 2 |
| Cucumis metuliferus | Horned Cucumber, African horned cucumber | 2 | 2 |
| Cucumis sativus | Cucumber, Garden cucumber | 4 | 2 |
| Cucurbita argyrosperma | Cushaw Pumpkin | 4 | 2 |
| Cucurbita ficifolia | Malabar Gourd, Figleaf gourd | 3 | 2 |
| Cucurbita foetidissima | Buffalo Gourd, Missouri gourd | 3 | 2 |
| Cucurbita maxima | Winter Squash | 5 | 3 |
| Cucurbita moschata | Squash, Crookneck squash | 5 | 3 |
| Cucurbita pepo | Pumpkin, Field pumpkin, Ozark melon, Texas gourd | 4 | 3 |
| Cuminum cyminum | Cumin - Jeera | 4 | 3 |
| Cunila origanoides | Stone Mint, Common dittany | 2 | 2 |
| Cuphea viscosissima | Tarweed, Blue waxweed | 2 | 0 |
| Cuscuta chinensis | Chinese Dodder | 0 | 3 |
| Cuscuta europaea | Greater dodder | 0 | 2 |
| Cuscuta umbellata | Flatglobe dodder | 1 | 0 |
| Cyananthus lobatus | Trailing Bellflower | 0 | 2 |
| Cyanella amboensis | Lady's Hand | 1 | 0 |
| Cyathodes oxycedrus | | 0 | 0 |
| Cyclanthera brachystachya | Cuchinito | 1 | 0 |
| Cyclanthera pedata | Achocha, Caihua, Caygua, Cayua, Korila, Wild Cucumber | 3 | 4 |
| Cycloloma atriplicifolium | Winged Pigweed | 2 | 1 |
| Cyclospermum leptophyllum | Slender Celery, Marsh parsley | 1 | 0 |
| Cymopterus acaulis | Plains Springparsley, Fendler's springparsley, Greeley springparsley, Higgins' springparsley | 4 | 0 |
| Cymopterus bulbosus | Bulbous Springparsley | 1 | 1 |
| Cymopterus fendleri | Fendler's Springparsley | 2 | 0 |
| Cymopterus globosus | Globe Springparsley | 2 | 0 |
| Cymopterus longipes | Longstalk Spring Parsley | 1 | 0 |
| Cymopterus montanus | Mountain Spring Parsley | 2 | 0 |
| Cymopterus newberryi | Sweetroot Spring Parsley | 2 | 1 |
| Cymopterus purpurescens | Widewing Springparsley | 3 | 0 |
| Cymopterus purpureus | Purple springparsley | 1 | 0 |
| Cynanchum acutum | | 0 | 0 |
| Cynanchum amplexicaule | | 1 | 1 |
| Cynanchum arnottianum | | 0 | 0 |
| Cynanchum ascyrifolium | Cruel Plant | 0 | 2 |
| Cynanchum atratum | Bai Wei | 1 | 2 |
| Cynanchum caudatum | | 1 | 1 |
| Cynanchum glaucescens | | 0 | 1 |
| Cynanchum japonicum | | 0 | 2 |
| Cynanchum paniculatum | | 1 | 2 |
| Cynanchum sibiricum | | 1 | 0 |
| Cynanchum stauntonii | | 0 | 2 |
| Cynara cardunculus | Cardoon | 3 | 5 |
| Cynara scolymus | Globe Artichoke | 3 | 5 |
| Cyperus distans | Slender Cyperus, Piedmont flatsedge | 1 | 1 |
| Cyperus esculentus | Tiger Nut, Yellow nutsedge, Nut Grass | 4 | 2 |
| Cyperus fendlerianus | Fendler's Flatsedge | 2 | 0 |
| Cyperus schweinitzii | Flatsedge, Schweinitz's flatsedge | 2 | 0 |
| Cyperus setigerus | Lean flatsedge | 2 | 0 |
| Cytinus hypocistus | | 1 | 1 |
|