| Latin Name | Common Name | Edibility Rating | Medicinal Rating |
| Abelmoschus esculentus | Okra | 4 | 3 |
| Abelmoschus moschatus | Musk Mallow,Musk Okra | 2 | 3 |
| Abronia fragrans | Snowball Sand Verbena | 2 | 1 |
| Abronia latifolia | Sand Verbena, Coastal sand verbena | 2 | 0 |
| Aciphylla colensoi | Wild Spaniard | 2 | 0 |
| Aciphylla squarrosa | Speargrass | 2 | 0 |
| Aconitum heterophyllum | | 1 | 2 |
| Aconitum septentrionale | | 1 | 0 |
| Aconitum violaceum | | 1 | 1 |
| Acorus calamus | Sweet Flag - Calamus | 3 | 4 |
| Acorus gramineus | Grass-leaved Sweet Rush, Japanese Sweet Flag, Dwarf Sweet Flag | 3 | 3 |
| Acrocomia aculeata | Coyoli Palm. Gru-Gru Palm, Macaw palm | 3 | 1 |
| Adansonia digitata | Baobab, Judas Fruit, Monkey Bread Tree | 3 | 3 |
| Adenophora denticulata | | 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 |
| Adesmia lotoides | | 1 | 0 |
| Agapanthus praecox minimus | | 1 | 1 |
| Agave sisalana | Sisal | 2 | 2 |
| Agave utahensis discreta | Century Plant | 3 | 1 |
| Agave utahensis eborispina | Century Plant | 3 | 1 |
| Ageratina aromatica | | 1 | 1 |
| Albuca amboensis | Slime Lily | 2 | 0 |
| Alcea rosea | Hollyhock | 3 | 2 |
| Alchemilla xanthochlora | Lady's Mantle | 2 | 3 |
| Aletris farinosa | Unicorn Root - Colic Root, White colicroot | 1 | 3 |
| Alhagi mannifera | Manna Tree | 2 | 2 |
| Alisma plantago-aquatica | Great Water Plantain, ZE-XIE, European water plantain, American water plantain, Northern water plan | 1 | 3 |
| 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 carinatum | Keeled Garlic | 3 | 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 obliquum | Twistedleaf Garlic | 3 | 2 |
| Allium oleraceum | Field Garlic | 3 | 2 |
| Allium orientale | | 3 | 2 |
| Allium oschaninii | | 3 | 2 |
| Allium paradoxum | Few-Flowered Leek | 5 | 2 |
| Allium pendulinum | | 3 | 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 triquetrum | Three-Cornered Leek | 5 | 2 |
| Allium tuberosum | Garlic Chives, Chinese chives, Oriental Chives, | 5 | 2 |
| Allium unifolium | One-Leaved Onion | 3 | 2 |
| Allium ursinum | Wild Garlic | 5 | 3 |
| Allium validum | Swamp Onion, Pacific onion | 3 | 2 |
| Allium victorialis | Alpine Leek, Victory onion | 4 | 2 |
| Allium vineale | Crow Garlic, Wild garlic, Compact onion, False Garlic, Wild, Onion | 3 | 2 |
| Allium wallichii | Jimbur | 3 | 2 |
| Alocasia macrorrhizos | Giant Taro, Giant Elephant Ear | 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 officinalis | Marsh Mallow, Common marshmallow | 5 | 5 |
| Ammophila arenaria | Marram Grass, European beachgrass | 1 | 0 |
| Amorphophallus konjac | Devil's Tongue, Devil's Tongue, Snake Plant, Konjac, Konnyaku Potato, Voodoo Lily | 4 | 2 |
| Amorphophallus paeoniifolius | Elephant Yam, Whitespot giant arum | 4 | 2 |
| Amorphophallus rivieri | Devil's Tongue, Umbrella Arum, Leopard Palm, Snake Palm | 2 | 2 |
| Amphicarpaea bracteata | Hog Peanut, American hogpeanut | 5 | 1 |
| Amphicarpaea pitcheri | Hog Peanut | 5 | 0 |
| Anacamptis pyramidalis | Pyramidal Orchid | 2 | 1 |
| Androstephium caeruleum | Blue Funnel Lily | 1 | 0 |
| Anemone narcissiflora | Narcissus-Flowered Anemone, Narcissus anemone | 1 | 0 |
| Anemonella thalictroides | Rue-Anemone | 2 | 1 |
| Anemopsis californica | Yerba Mansa | 2 | 2 |
| Angelica archangelica | Angelica, Norwegian angelica | 3 | 3 |
| Angelica atropurpurea | Purplestem Angelica | 2 | 2 |
| Angelica keiskei | | 2 | 0 |
| Angelica sylvestris | Wild Angelica,Woodland angelica | 3 | 2 |
| Anredera cordifolia | Madeira Vine, Heartleaf madeiravine | 2 | 0 |
| Anthriscus cerefolium | Chervil, Garden chervil | 3 | 2 |
| Anthriscus sylvestris | Cow Parsley, Wild chervil | 2 | 1 |
| Apios americana | Ground Nut | 5 | 1 |
| Apios fortunei | Hodo, Hodoimo | 5 | 1 |
| Apios priceana | Traveler's delight | 5 | 0 |
| Apium australe | | 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 prostratum | Sea Celery, Prostrate marshwort | 3 | 0 |
| Aponogeton distachyos | Water Hawthorn, Cape pondweed, Vleikos | 2 | 0 |
| Aquilegia canadensis | Wild Columbine, Red columbine, Meeting Houses, Common Columbine | 2 | 2 |
| Aquilegia formosa | Western Columbine | 2 | 2 |
| Aralia continentalis | Manchurian Spikenard | 2 | 0 |
| Aralia cordata | Udo | 4 | 2 |
| Aralia nudicaulis | Wild Sarsaparilla | 4 | 3 |
| Aralia racemosa | American Spikenard | 3 | 3 |
| Aralia schmidtii | Sakhalin Spikenard | 2 | 0 |
| Arctium lappa | Great Burdock, Gobo | 4 | 5 |
| Arctium minus | Lesser Burdock | 3 | 5 |
| Arisaema amurense | Tian Nan Xing | 2 | 3 |
| Arisaema costatum | | 2 | 0 |
| Arisaema dracontium | Green-Dragon | 1 | 1 |
| Arisaema jacquemontii | | 2 | 0 |
| Arisaema negishii | | 2 | 0 |
| Arisaema quinatum | Indian Turnip, Jack in the pulpit | 1 | 0 |
| Arisaema serratum | | 2 | 1 |
| Arisaema tortuosum | Arisaema | 2 | 2 |
| Arisaema triphyllum | Jack In The Pulpit, Dragonroot, Indian Turnip | 3 | 2 |
| Arisarum vulgare | Friar's Cowl | 2 | 0 |
| Arjona patagonica | Macachi | 2 | 0 |
| Armeria maritima | Sea Thrift, Thrift seapink, California seapink, Interior seapink, Siberian sea thrift | 1 | 1 |
| Armoracia rusticana | Horseradish, Red Cole | 3 | 3 |
| Arracacia xanthorrhiza | Peruvian Parsnip, Arracacha | 4 | 0 |
| Arthropodium cirrhatum | Rock-lily | 1 | 0 |
| Arthropodium milleflorum | Pale Vanilla Lily | 3 | 0 |
| Arthropodium minus | Small Vanilla Lily | 2 | 0 |
| Arum dioscoridis | | 2 | 1 |
| Arum italicum | Italian lords and ladies, Italian Arum | 2 | 0 |
| Arum maculatum | Cuckoo Pint | 2 | 1 |
| Arundo donax | Giant Reed, Giant Reed Grass | 3 | 2 |
| Asarum nipponicum | | 1 | 0 |
| Asarum splendens | Chinese Wild Ginger | 3 | 0 |
| Asarum takaoi | | 1 | 0 |
| Asclepias galioides | Bedstraw Milkweed | 2 | 1 |
| Asclepias purpurascens | Purple Milkweed | 2 | 1 |
| Asclepias speciosa | Showy 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 adscendens | | 2 | 1 |
| Asparagus cochinchinensis | Chinese Asparagus | 3 | 3 |
| Asparagus racemosus | Shatavari | 3 | 5 |
| 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 |
| Asplenium bulbiferum | Hen And Chicken Fern, Parsley Fern, Mother Spleenwort | 1 | 0 |
| Aster macrophyllus | Bigleaf Aster | 2 | 1 |
| Astragalus aboriginorum | Indian Milkvetch | 2 | 0 |
| Astragalus canadensis | Canadian Milkvetch, Shorttooth Canadian milkvetch, Morton's Canadian milkvetch | 3 | 2 |
| Astragalus christianus | | 2 | 0 |
| Astragalus diphysus | Specklepod Milkvetch, Freckled milkvetch | 3 | 0 |
| Astragalus glycyphyllos | Milk Vetch, Licorice milkvetch | 1 | 0 |
| Astragalus pictus-filifolius | Painted Milkvetch | 4 | 0 |
| Astragalus umbellatus | Tundra milkvetch | 2 | 0 |
| Athamantha sicula | | 2 | 0 |
| Athamantha turbith | Candy Carrot | 2 | 0 |
| Athyrium filix-femina | Lady Fern, Common ladyfern, Subarctic ladyfern, Asplenium ladyfern, Southern Lady Fern, Tatting Fer | 1 | 2 |
| Atractylodes japonica | Japanese Atractylodes | 2 | 3 |
| Atractylodes lancea | Cang Zhu | 1 | 3 |
| Azorella caespitosa | | 2 | 1 |
| Azorella filamentosa | | 1 | 0 |
| Azorella fuegiana | | 1 | 0 |
| Azorella lycopodioides | | 1 | 0 |
| Azorella selago | | 1 | 0 |
| Azorella trifurcata | | 1 | 0 |
| Babiana plicata | Baboon Root | 1 | 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 |
| Banisteriopsis caapi | Yage, Ayahuasca, Caapi | 0 | 4 |
| Bauhinia petersiana | White bauhinia, Zambezi coffee | 3 | 2 |
| Beta lomatogona | Beet | 2 | 0 |
| Beta trigyna | Beet | 2 | 0 |
| Beta vulgaris altissima | Sugar Beet | 4 | 2 |
| Beta vulgaris craca | Beetroot | 4 | 2 |
| Blechnum spicant | Hard Fern, Deer fern | 2 | 1 |
| Bloomeria aurea | Golden Stars, Common goldenstar | 1 | 0 |
| Bloomeria crocea | Golden Stars, Common goldenstar | 1 | 0 |
| Boehmeria longispica | | 1 | 1 |
| Boehmeria nipononivea | Ramie | 1 | 1 |
| Boehmeria nivea | Ramie, Chinese Grass, Chinese Silk Plant | 2 | 2 |
| Boerhavia diffusa | Tar Vine, Red spiderling | 2 | 4 |
| Bolax gummifera | Bolax | 2 | 1 |
| Bomarea acutifolia | Yatzi | 2 | 0 |
| Bomarea edulis | | 3 | 0 |
| Bomarea salsilla | | 2 | 0 |
| Bombax ceiba | Red Silk Cotton Tree, Kapok Tree | 2 | 2 |
| Bongardia chrysogonum | | 2 | 1 |
| Boopsis australis | | 2 | 0 |
| Boscia senegalensis | Aizen, Boscia | 4 | 2 |
| Botrychium virginianum | Rattlesnake Fern | 1 | 2 |
| Brachychiton populneus | Kurrajong, Bottletree, Kurrajong | 3 | 0 |
| Brasenia schreberi | Water Shield | 3 | 2 |
| Brassica juncea | Brown Mustard | 4 | 2 |
| Brassica juncea napiformis | Root Mustard | 4 | 2 |
| Brassica napus napobrassica | Swede | 4 | 2 |
| Brassica rapa | Turnip, Field mustard, Toria, Yellow sarson | 3 | 2 |
| Brassica rapa oleifera | Stubble Turnip | 2 | 0 |
| Brodiaea coronaria | Californian Hyacinth, Crown brodiaea, Indian Valley brodiaea | 3 | 0 |
| Bulbinella hookeri | Maori Onion | 1 | 0 |
| Bulbinopsis bulbosa | Golden Lily | 3 | 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 |
| Burchardia umbellata | Milkmaids | 2 | 0 |
| Butomus umbellatus | Flowering Rush | 3 | 0 |
| 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 |
| Calandrinia balonensis | | 2 | 0 |
| Calandrinia polyandra | Parakeelya | 2 | 0 |
| Calandrinia remota | | 2 | 0 |
| Calathea allouia | Sweetcorn Root, Guinea Arrowroot | 4 | 0 |
| Calla palustris | Water Arum | 2 | 2 |
| 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 |
| Calochortus aureus | Mariposa Lily, Golden mariposa lily | 2 | 0 |
| Calochortus barbatus | | 1 | 0 |
| Calochortus clavatus | Clubhair mariposa lily, Arroyo de la Cruz mariposa lily | 1 | 0 |
| Calochortus elegans | Star Tulip, Elegant mariposa lily | 1 | 0 |
| Calochortus gunnisonii | Mariposa Lily, Gunnison's mariposa lily | 2 | 1 |
| Calochortus luteus | Yellow Mariposa, Yellow mariposa lily | 2 | 0 |
| Calochortus macrocarpus | Sagebrush Mariposa Lily, Nez Perce mariposa lily | 2 | 1 |
| Calochortus nuttallii | Sego Lily | 2 | 0 |
| Calochortus pulchellus | Mount Diablo Globelily, Mt. diablo fairy-lantern | 2 | 0 |
| Calochortus tolmiei | Tolmie Startulip | 2 | 0 |
| Calochortus uniflorus | Large-Flowered Star Tulip, Monterey mariposa lily | 1 | 0 |
| Calochortus venustus | Butterfly Mariposa Lily | 2 | 0 |
| Caltha leptosepala | Western Marsh Marigold, Howell's marsh marigold, Sulphur marsh marigold | 2 | 1 |
| Caltha leptosepala howellii | | 2 | 0 |
| Caltha natans | Floating marsh marigold | 1 | 1 |
| Caltha palustris | Marsh Marigold, Yellow marsh marigold | 2 | 2 |
| Calypso bulbosa | Fairyslipper | 2 | 1 |
| Calystegia hederacea | Japanese false bindweed | 2 | 1 |
| Calystegia pellita | | 2 | 0 |
| Calystegia pubescens | Japanese Bindweed | 1 | 1 |
| Calystegia sepium | Hedge Bindweed, Hedge false bindweed, Appalachia false bindweed, Bingham's false bindweed | 2 | 1 |
| Calystegia subvolubilis | | 1 | 0 |
| Camassia cusickii | Cussick's camas | 2 | 0 |
| 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 |
| Campanula edulis | | 2 | 0 |
| Campanula latifolia | Large Campanula, Giant bellflower | 3 | 1 |
| Campanula medium | Canterbury Bells, Cup and Saucer, Canterbury Bells | 2 | 0 |
| Campanula persicifolia | Harebell, Peachleaf bellflower | 4 | 0 |
| Campanula rapunculoides | Creeping Bellflower, Rampion bellflower | 3 | 1 |
| Campanula rapunculus | Rampion | 4 | 0 |
| Campanula takesimana | Korean Bellflower | 4 | 0 |
| Canna edulis | Achira, Indian shot | 3 | 0 |
| Canna glauca | Louisiana Canna, Maraca amarilla | 2 | 0 |
| Canna indica | Indian Shot | 4 | 2 |
| Caragana pygmaea | Pygmy Peashrub | 1 | 0 |
| Cardamine bulbifera | Coral Root, Coralroot bittercress | 2 | 0 |
| Cardamine fauriei | | 2 | 0 |
| Cardamine flexuosa | Wavy Bittercress,Woodland bittercress | 2 | 0 |
| Cardamine lyrata | | 2 | 0 |
| Cardamine yezoensis | | 2 | 0 |
| Cardiocrinum cordatum | | 2 | 0 |
| Carex acutiformis | Swamp Sedge, Lesser pond sedge | 1 | 0 |
| Carex arenaria | Sand Sedge | 2 | 2 |
| Carex brizoides | | 1 | 0 |
| Carex buxbaumii | Buxbaum's sedge | 1 | 0 |
| Carex dispalata | | 1 | 0 |
| Carex disticha | Tworank sedge | 1 | 0 |
| Carex elata | Tufted Sedge, Golden Variegated Sedge, Tufted Sedge | 2 | 0 |
| Carex hirta | Hammer sedge | 1 | 1 |
| Carex kobomugi | Japanese sedge | 1 | 0 |
| Carex macrocephala | Largehead sedge | 1 | 0 |
| Carex nubigena | | 1 | 1 |
| Carex paniculata | | 1 | 0 |
| Carex riparia | Great Pond Sedge | 1 | 0 |
| Carex rostrata | Beaded Sedge, Beaked sedge | 1 | 0 |
| Carex utriculata | Sedge, Northwest territory sedge | 2 | 0 |
| Carlina acaulis | Stemless Carline Thistle | 2 | 2 |
| Carludovica palmata | Panama Hat Plant, Carludovica Palm | 3 | 0 |
| Carum carvi | Caraway | 4 | 3 |
| Centaurea chamaerhaponticum | | 2 | 0 |
| Centaurea depressa | Iranian knapweed | 2 | 0 |
| Centranthus ruber | Red Valerian, Fox's Brush, Jupiter's Beard | 2 | 1 |
| Chaerophyllum bulbosum | Turnip-Rooted Chervil | 3 | 0 |
| Chaerophyllum tuberosum | Sham | 1 | 0 |
| Chlorogalum parviflorum | Smallflower Soapplant | 2 | 0 |
| Chlorogalum pomeridianum | Soap Lily, Wavyleaf soap plant | 3 | 2 |
| Chrysopogon zizanioides | Vetiver, Vetiver Root, Khus Khus | 2 | 2 |
| Cichorium intybus | Chicory, Radicchio, Succory, Witloof | 4 | 3 |
| Cirsium amplexifolium | Dakiba-Hime-Azami | 1 | 0 |
| Cirsium arvense | Creeping Thistle, Canada thistle | 2 | 2 |
| Cirsium brevistylum | Indian Thistle, Clustered thistle | 3 | 0 |
| Cirsium buergeri | | 1 | 0 |
| Cirsium chinense | | 1 | 0 |
| Cirsium dipsacolepis | | 1 | 0 |
| Cirsium eatoni | Eaton's Thistle | 1 | 1 |
| Cirsium edule | Edible Thistle | 3 | 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 maritimum | | 1 | 0 |
| Cirsium occidentale | Cobwebby Thistle, Snowy thistle, Compact cobwebby thistle | 2 | 0 |
| Cirsium ochrocentrum | Yellow Spined Thistle | 2 | 2 |
| Cirsium oleraceum | Cabbage Thistle | 2 | 0 |
| Cirsium oligophyllum | | 2 | 0 |
| 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 sieboldii | | 1 | 0 |
| 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 virginianum | Virginia thistle | 1 | 0 |
| Cirsium vulgare | Common Thistle, Bull thistle, Dodder, Boar Thistle, Bull Thistle | 2 | 1 |
| 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 perfoliata | Miner's Lettuce | 4 | 1 |
| 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 |
| Cnicus benedictus | Blessed Thistle | 2 | 3 |
| Cocculus orbiculatus | Queen coralbead | 1 | 2 |
| Cocos nucifera | Coconut Palm, Coconut | 5 | 2 |
| Codonopsis lanceolata | Todok | 2 | 2 |
| Codonopsis ovata | | 2 | 1 |
| Codonopsis pilosula | Dang Shen, Bellflower | 2 | 3 |
| Codonopsis ussuriensis | | 2 | 0 |
| Coleus edulis | Gala Dinich | 1 | 0 |
| Colocasia esculenta | Taro, Elephant Ears Taro, Dasheen, Eddo | 4 | 2 |
| Commelina coelestis | Blue Spider Wort, Commelina | 2 | 0 |
| 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 |
| Conanthera bifolia | | 2 | 0 |
| Conanthera campanulata | | 2 | 0 |
| Conioselinum pacificum | Pacific Hemlock-Parsley | 2 | 1 |
| Conopodium majus | Pignut | 3 | 0 |
| Cordyline australis | Cabbage Tree | 3 | 0 |
| Cordyline indivisa | Cabbage Tree | 3 | 0 |
| Coronopus squamatus | Crowfoot, Greater swinecress | 1 | 0 |
| Corydalis ambigua | | 1 | 3 |
| Corydalis edulis | | 1 | 0 |
| Corydalis juncea | | 1 | 0 |
| Corydalis solida | Fumewort, Spring fumewort | 1 | 3 |
| Crambe cordifolia | Flowering sea kale | 3 | 1 |
| Crambe kotschyana | | 2 | 1 |
| Crambe maritima | Sea Kale | 4 | 0 |
| Crambe orientalis | | 3 | 0 |
| Crambe tatarica | Tartar Bread Plant | 3 | 0 |
| Crassocephalum crepidioides | Okinawa Spinach, Redflower Ragleaf, Fireweed | 4 | 2 |
| Crinum bulbispermum | Hardy swamplily | 1 | 0 |
| Crinum flaccidum | Murray Lily | 2 | 0 |
| Crocus cancellatus | | 1 | 0 |
| Crocus kotschyanus | | 1 | 0 |
| Crocus sativus | Saffron | 3 | 3 |
| Cryptotaenia canadensis | Honewort, Canadian honewort | 3 | 0 |
| Cryptotaenia japonica | Mitsuba, Japanese honewort | 4 | 1 |
| Cucurbita foetidissima | Buffalo Gourd, Missouri gourd | 3 | 2 |
| Cucurbita pepo | Pumpkin, Field pumpkin, Ozark melon, Texas gourd | 4 | 3 |
| Curculigo orchioides | Star grass, Golden-eyed grass | 1 | 4 |
| Cyanella amboensis | Lady's Hand | 1 | 0 |
| Cyanella capensis | Lady's Hand | 1 | 0 |
| Cyanella hyacinthoides | Lady's Hand | 1 | 0 |
| Cyanella lutea | Lady's Hand | 1 | 0 |
| Cyanella orchidiformis | Lady's Hand | 1 | 0 |
| Cymopterus acaulis | Plains Springparsley, Fendler's springparsley, Greeley springparsley, Higgins' springparsley | 4 | 0 |
| Cymopterus bulbosus | Bulbous Springparsley | 1 | 1 |
| Cymopterus globosus | Globe Springparsley | 2 | 0 |
| Cymopterus montanus | Mountain Spring Parsley | 2 | 0 |
| Cymopterus purpurascens | Gamote, Widewing springparsley | 4 | 0 |
| Cymopterus purpurescens | Widewing Springparsley | 3 | 0 |
| Cynanchum caudatum | | 1 | 1 |
| Cynara cardunculus | Cardoon | 3 | 5 |
| Cynoglossum grande | Pacific Hound's Tongue | 1 | 1 |
| Cyperus aristatus | | 2 | 0 |
| 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 longus | Galingale | 2 | 1 |
| Cyperus papyrus | Papyrus. Papyrus sedge | 2 | 2 |
| Cyperus rotundus | Nut Grass | 3 | 3 |
| Cyperus schweinitzii | Flatsedge, Schweinitz's flatsedge | 2 | 0 |
| Cyperus setigerus | Lean flatsedge | 2 | 0 |
| Cystopteris bulbifera | Berry Bladder Fern, Bulblet bladderfern | 1 | 0 |
| Cystopteris fragilis | Brittle Bladder Fern | 1 | 1 |
| Cystopteris montana | Mountain Bladder Fern | 1 | 0 |
| Dactylorhiza incarnata | Marsh Orchid | 2 | 2 |
| Dactylorhiza maculata | Spotted Orchid | 2 | 2 |
| Dahlia pinnata | Dahlia, Pinnate dahlia | 1 | 0 |
| Dahlia rosea | Dahlia, Pinnate dahlia | 1 | 1 |
| Dalea candida | White Prairie Clover | 3 | 1 |
| Dalea candida oligophylla | White Prairie Clover | 3 | 1 |
| Dalea gattingeri | Purpletassels | 2 | 0 |
| Dalea purpurea | Purple Prairie Clover | 2 | 1 |
| Damasonium alisma | Thrumwort | 1 | 0 |
| Dasylirion simplex | | 2 | 0 |
| Dasylirion texanum | Texas sotol | 2 | 0 |
| Daucus carota | Wild Carrot, Queen anne's lace, Carrot, Wild Carrot, Queen Anne's Lace | 2 | 3 |
| Daucus carota sativus | Carrot | 5 | 3 |
| Daucus pusillus | Rattlesnake Weed, American wild carrot | 2 | 2 |
| Deinanthe bifida | | 1 | 0 |
| Dentaria diphylla | Crinkleroot | 4 | 2 |
| Dentaria laciniata | Cut-Leaved Toothwort | 3 | 0 |
| Dentaria maxima | Large Toothwort | 1 | 1 |
| Dicentra canadensis | Squirrel Corn | 1 | 2 |
| Dichelostemma pulchellum | Wild Hyacinth | 4 | 0 |
| Dichelostemma volubile | Snake Lily, Twining snakelily | 2 | 0 |
| Dichopogon fimbriatus | Chocolate Lily | 3 | 0 |
| Dichopogon strictus | Chocolate Lily | 3 | 0 |
| Dioscorea alata | Water Yam, Purple yam, Greater yam, White yam | 4 | 1 |
| Dioscorea batatas | Chinese Yam | 5 | 5 |
| Dioscorea bulbifera | Aerial Yam, Air Potato | 4 | 2 |
| Dioscorea cayennensis | Yellow Yam, Yellow Guinea yam | 4 | 0 |
| Dioscorea deltoidea | Yam | 2 | 2 |
| Dioscorea esculenta | Lesser Yam, Potato Yam, Chinese Yam, Wild Yam | 4 | 0 |
| Dioscorea japonica | Glutinous Yam, Japanese yam | 4 | 2 |
| Dioscorea kamoonensis | | 2 | 1 |
| Dioscorea tokoro | | 2 | 2 |
| Dioscorea trifida | Cush Cush Yam, Sweet yam | 4 | 0 |
| Dioscorea villosa | Wild Yam | 2 | 4 |
| Dioscoreophyllum cumminsii | Serendipity Berry, Guinea potato | 4 | 0 |
| Disporum smilacinum | | 2 | 0 |
| Dodecatheon hendersonii | Sailor-Caps, Mosquito bills | 1 | 0 |
| Dovyalis abyssinica | Abyssinian Gooseberry | 4 | 2 |
| Dracocephalum heterophyllum | | 1 | 0 |
| Dryopteris carthusiana | Narrow Buckler Fern, Spinulose woodfern | 2 | 4 |
| Dryopteris dilatata | Shield Fern | 2 | 4 |
| Dryopteris expansa | Spiny Wood Fern, Spreading woodfern | 2 | 3 |
| Dryopteris filix-mas | Male Fern | 2 | 4 |
| Dryopteris sieboldii | | 1 | 0 |
| Eleocharis dulcis | Chinese Water Chestnut | 4 | 1 |
| Eleusine indica | Wire Grass, Indian goosegrass, Yard Grass, Goose Grass | 3 | 1 |
| Elytrigia repens | Couch Grass, Quackgrass | 2 | 3 |
| Eminium spiculatum | | 1 | 0 |
| Ensete ventricosum | Ethiopian Banana, Abyssinian banana | 2 | 0 |
| Epilobium angustifolium | Willow Herb | 3 | 2 |
| Equisetum arvense | Field Horsetail | 2 | 3 |
| Equisetum fluviatile | Swamp Horsetail, Water horsetail | 2 | 2 |
| Equisetum hyemale | Dutch Rush, Scouringrush horsetail, Horsetail, Scouring Rush, Rough Horsetail | 2 | 2 |
| Equisetum pratense | Meadow Horsetail | 2 | 2 |
| Equisetum scirpoides | Dwarf scouring rush | 2 | 2 |
| Equisetum sylvaticum | Wood Horsetail, Woodland horsetail | 1 | 2 |
| Eremurus robustus | | 1 | 0 |
| Ericameria nauseosa | Rubber Rabbitbrush | 1 | 2 |
| Erigenia bulbosa | Harbinger Of Spring | 2 | 1 |
| Erigeron bulbosa | | 1 | 0 |
| Eriogonum alatum | Winged Buckwheat | 2 | 1 |
| Eriogonum atrorubens | Red Wild Buckwheat, Red buckwheat | 1 | 0 |
| Eriogonum longifolium | Longleaf Buckwheat | 1 | 1 |
| Eriophorum angustifolium | Cotton Grass, Tall cottongrass | 2 | 1 |
| Eriophorum gracile | Cotton Grass, Slender cottongrass | 2 | 0 |
| Erodium cicutarium bipinnatum | | 2 | 0 |
| Erodium crinitum | Crowfoot | 1 | 0 |
| Erodium hirtum | | 1 | 0 |
| Erodium jacquinianum | | 1 | 0 |
| Eryngium campestre | Field Eryngo | 2 | 2 |
| Eryngium maritimum | Sea Holly, Seaside eryngo | 3 | 3 |
| Erythronium albidum | White Trout-Lily, White fawnlily | 3 | 0 |
| Erythronium albidum mesochoreum | Prairie Trout Lily | 3 | 0 |
| Erythronium americanum | Trout Lily, Dogtooth violet | 4 | 1 |
| Erythronium californicum | Fawn Lily, California fawnlily | 2 | 0 |
| Erythronium citrinum | Pale Fawn Lily, Cream fawnlily, Roderick's fawnlily | 2 | 0 |
| Erythronium dens-canis | Dog's-Tooth Violet | 3 | 0 |
| Erythronium grandiflorum | Avalanche Lily, Yellow avalanche-lily | 3 | 1 |
| Erythronium helenae | Mt. St. Helena Fawm Lily, Pacific fawnlily | 2 | 0 |
| Erythronium hendersonii | Henderson's Fawn Lily | 2 | 0 |
| Erythronium howellii | Howell's Fawn Lily | 2 | 0 |
| Erythronium japonicum | Katakuri | 4 | 0 |
| Erythronium montanum | Avelanche Lily, White avalanche-lily | 2 | 0 |
| Erythronium multiscapideum | Adderstongue | 2 | 0 |
| Erythronium oregonum | Giant White Fawnlily | 2 | 1 |
| Erythronium purpurascens | Avelanche Lily, Purple fawnlily | 2 | 0 |
| Erythronium revolutum | Pink Fawn Lily, Mahogany fawnlily | 3 | 0 |
| Erythronium tuolumnense | Tuolumne Fawn Lily, Dog's Tooth Violet, Pagoda Lily | 2 | 0 |
| Eucalyptus caesia | Gungurru | 2 | 0 |
| Eucalyptus dumosa | Water Mallee | 1 | 0 |
| Eucalyptus tereticornis | Forest Red Gum | 2 | 2 |
| Euclea divinorum | Magic Guarri | 2 | 2 |
| Eupatorium japonicum | Pei Lan | 1 | 3 |
| Euphorbia serpyllifolia | Thymeleaf Sandmat | 2 | 2 |
| Eustrephus latifolius | Wombat Berry | 3 | 0 |
| Ferula assa-foetida | Asafoetida - Devil's Dung. Hing (Indian), Asafetida | 3 | 3 |
| Ferula karelinii | | 1 | 0 |
| Ferula longifolia | | 1 | 0 |
| Ficus racemosa | Cluster Fig | 3 | 2 |
| Filipendula kamtschatica | | 2 | 0 |
| Filipendula ulmaria | Meadowsweet, Queen of the meadow, Double Lady of the Meadow, European Meadowsweet | 3 | 3 |
| Filipendula vulgaris | Dropwort, Meadowsweet | 2 | 1 |
| Foeniculum vulgare | Fennel, Sweet fennel | 5 | 3 |
| Foeniculum vulgare azoricum | Florence Fennel | 3 | 3 |
| Foeniculum vulgare dulce | Sweet Fennel | 4 | 3 |
| Frasera speciosa | Green Gentian, Elkweed | 1 | 2 |
| Fritillaria affinis | Chocolate Lily, Checker lily | 3 | 0 |
| Fritillaria atropurpurea | Purple Fritillary, Spotted fritillary | 2 | 1 |
| Fritillaria camschatcensis | Kamchatka Lily, Kamchatka fritillary | 4 | 0 |
| Fritillaria cirrhosa | Chuan Bei Mu | 2 | 3 |
| Fritillaria imperialis | Crown Imperial, Imperial fritillary, Crown Imperial Fritillary | 2 | 1 |
| Fritillaria pudica | Yellow Fritillary | 3 | 0 |
| Fritillaria thunbergii | Zhe Bei Mu | 2 | 3 |
| Fritillaria verticillata | | 2 | 3 |
| Gagea lutea | Yellow Star Of Bethlehem | 1 | 0 |
| Gastrodia cunninghamii | | 2 | 0 |
| Gastrodia elata | Tien Ma | 2 | 3 |
| Gastrodia sesamoides | Potato Orchid | 2 | 0 |
| Geranium dissectum | Cut-Leafed Cranesbill, Cutleaf geranium | 1 | 2 |
| Geranium pilosum | | 1 | 0 |
| Geranium potentilloides | Native Carrot, Cinquefoil geranium | 1 | 0 |
| Geranium solanderi | Solander's Geranium | 1 | 0 |
| Geranium tuberosum | | 2 | 0 |
| Geum urbanum | Wood Avens, Bennet's Root - Old man's whiskers, Herb bennet | 3 | 3 |
| Gladiolus permeabilis edulis | | 2 | 0 |
| Gladiolus quartinianus | | 2 | 0 |
| Glaux maritima | Black Saltwort, Sea milkwort | 2 | 1 |
| Glehnia littoralis | Bei Sha Shen, American silvertop | 2 | 2 |
| Glycine tabacina | Glycine Pea, Glycine | 2 | 0 |
| Glycyrrhiza echinata | Wild Liquorice, Chinese licorice | 4 | 3 |
| Glycyrrhiza glabra | Liquorice, Cultivated licorice | 4 | 4 |
| Glycyrrhiza lepidota | American Liquorice | 4 | 3 |
| Glycyrrhiza malensis | | 2 | 0 |
| Glycyrrhiza uralensis | Gan Cao | 3 | 4 |
| Gnetum africanum | Eru, African Jointfir | 4 | 2 |
| Gnetum buchholzianum | Jointfir | 4 | 2 |
| Gundelia tournefortii | Tournefort's gundelia | 2 | 0 |
| Gymnadenia conopsea | Fragrant Orchid | 2 | 2 |
| Gynandriris sisyrinchium | Spanish Nut | 1 | 0 |
| Gypsophila davurica | | 1 | 0 |
| Habenaria intermedia | | 2 | 0 |
| Hedysarum alpinum | Alpine Sweetvetch | 3 | 0 |
| Hedysarum arcticum | | 2 | 0 |
| Hedysarum boreale | Sweet Vetch, Utah sweetvetch, Northern sweetvetch | 4 | 0 |
| Hedysarum boreale mackenzii | Liquorice Root | 4 | 0 |
| Hedysarum hedysaroides | Alpine French Honeysuckle | 3 | 0 |
| Hedysarum occidentale | Liquorice Root, Western sweetvetch | 4 | 0 |
| Hedysarum sachalinense | | 2 | 0 |
| Hedysarum vicioides | | 2 | 0 |
| Helianthus cusickii | Cusick's sunflower | 3 | 1 |
| Helianthus doronicoides | | 2 | 0 |
| Helianthus giganteus | Giant Sunflower | 3 | 0 |
| Helianthus laetiflorus | Showy Sunflower, Cheerful sunflower | 2 | 0 |
| Helianthus maximilianii | Maximillian Sunflower, Maximillian Daisy | 3 | 0 |
| Helianthus strumosus | Paleleaf Woodland Sunflower | 2 | 1 |
| Helianthus tuberosus | Jerusalem Artichoke | 4 | 1 |
| Hemerocallis altissima | | 4 | 1 |
| Hemerocallis aurantiaca | | 4 | 1 |
| Hemerocallis citrina | Citron daylily | 4 | 1 |
| Hemerocallis coreana | | 4 | 1 |
| Hemerocallis darrowiana | Day Lily | 4 | 1 |
| Hemerocallis forrestii | | 2 | 1 |
| Hemerocallis fulva | Common Day Lily, Orange daylily, Tawny Daylily, Double Daylily | 5 | 2 |
| Hemerocallis fulva longituba | | 4 | 1 |
| Hemerocallis graminea | | 4 | 1 |
| Hemerocallis hakunensis | | 4 | 1 |
| Hemerocallis lilioasphodelus | Yellow Day Lily | 4 | 2 |
| Hemerocallis littorea | Coastal Day Lily | 4 | 1 |
| Hemerocallis micrantha | | 4 | 1 |
| Hemerocallis minor | Grassleaf Day Lily, Small daylily | 4 | 1 |
| Hemerocallis multiflora | | 4 | 1 |
| Hemerocallis pedicellata | | 4 | 1 |
| Hemerocallis plicata | | 4 | 1 |
| Heracleum sphondylium | Cow Parsnip, Eltrot | 3 | 2 |
| Heracleum sphondylium montanum | Cow Parsnip | 3 | 2 |
| Heracleum sphondylium sibiricum | | 3 | 2 |
| Heracleum tuberosum | | 2 | 0 |
| Hesperantha baurii | | 1 | 0 |
| Hesperocallis undulata | Desert Lily | 1 | 0 |
| Hibiscus acetosella | Cranberry Hibiscus | 3 | 2 |
| Hibiscus cannabinus | Kenaf, Brown Indianhemp | 4 | 2 |
| Hibiscus diversifolius | Swamp Hibiscus | 2 | 1 |
| Hibiscus heterophyllus | Native Rosella | 2 | 0 |
| Hibiscus mutabilis | Cotton Rose, Dixie rosemallow | 2 | 2 |
| Hibiscus rosa-sinensis | Chinese Hibiscus, Shoeblackplant, Hawaiian Hibiscus, Tropical Hibiscus, China Rose, Rose-of-China, S | 3 | 3 |
| Hibiscus sabdariffa | Roselle | 3 | 3 |
| Hibiscus sinosyriacus | Rose Of Sharon | 4 | 2 |
| Hibiscus syriacus | Rose Of Sharon, Althaea, Shrub Althea, Hardy Hibiscus | 4 | 2 |
| Hibiscus trionum | Flower Of An Hour | 2 | 1 |
| Hoffmannseggia densiflora | Indian Rush-Pea | 1 | 0 |
| Hololeion krameri | | 1 | 0 |
| Hololeion maximowiczii | | 2 | 0 |
| Hordeum bulbosum | Bulbous Barley | 2 | 0 |
| Hosta undulata | | 2 | 0 |
| Houttuynia cordata | Tsi, Chameleon, Rainbow Plant, Chameleon Plant | 4 | 3 |
| Humulus lupulus | Hop, Common hop, European Hop, | 4 | 5 |
| Hydrophyllum canadense | John's Cabbage, Bluntleaf waterleaf | 3 | 0 |
| Hydrophyllum capitatum | Cat's Breeches, Ballhead waterleaf, Alpine waterleaf, Thompson's waterleaf | 3 | 0 |
| Hydrophyllum occidentale | Western Waterleaf | 3 | 0 |
| Hydrophyllum tenuipes | Pacific Waterleaf | 2 | 0 |
| Hypochoeris apargioides | | 1 | 0 |
| Hypochoeris incana | | 2 | 0 |
| Hypochoeris scorzonerae | | 1 | 1 |
| Hypoxis hygrometrica | Golden Weather Glass | 2 | 0 |
| Ilex aculeolata | | 1 | 0 |
| Imperata cylindrica | Cogongrass, Japanese Blood Grass | 3 | 3 |
| Indigofera arrecta | Bengal Indigo, Java indigo, Natal indigo | 2 | 2 |
| Inula helenium | Elecampane, Elecampane inula | 3 | 3 |
| Ipomoea aquatica | Kangkong, Swamp Morning Glory | 4 | 2 |
| Ipomoea batatas | Sweet Potato, Black Sweet Potato, Sweet Potato Vine | 5 | 0 |
| Ipomoea leptophylla | Bush Moon Flower | 3 | 2 |
| Ipomoea pandurata | Wild Potato Vine, Man of the earth | 3 | 2 |
| Iris cristata | Crested Iris, Dwarf crested iris | 1 | 1 |
| Iris ensata | Japanese Water Iris | 1 | 1 |
| Iris filifolia | | 1 | 0 |
| Iris japonica | | 1 | 2 |
| Iris setosa | Beachhead Iris, Canada beachhead iris, Wild flag | 1 | 1 |
| Iris sibirica | Siberian Iris | 1 | 1 |
| Iris tectorum | Roof Iris, Wall iris, Japanese Roof, White Root Iris | 1 | 0 |
| Ixeris chinensis | | 1 | 0 |
| Ixeris dentata | | 2 | 0 |
| Ixeris stolonifera | Creeping lettuce | 1 | 0 |
| Jatropha curcas | Physic Nut, Barbados Nut | 2 | 3 |
| Kosteletzkya pentacarpos | | 3 | 0 |
| Lablab purpureus | Hyacinth Bean, Bonavist-bean | 4 | 2 |
| Lactuca raddeana | | 2 | 2 |
| Lathyrus linifolius montanus | Bitter Vetch | 2 | 0 |
| Lathyrus ochroleucas | Cream Peavine | 1 | 1 |
| Lathyrus ochrus | Cyprus Vetch | 1 | 0 |
| Lathyrus tuberosus | Earthnut Pea, Tuberous sweetpea | 5 | 0 |
| Lavatera plebeia | Lavatera | 2 | 1 |
| Leonurus sibiricus | Chinese Motherwort, Honeyweed | 2 | 3 |
| Lepidium latifolium | Dittander, Broadleaved pepperweed | 3 | 1 |
| Lepidium meyenii | Maca | 5 | 3 |
| Lepidium spp. | Perennial Lepidium | 5 | 3 |
| Leucanthemum vulgare | Ox-Eye Daisy, Marguerite | 2 | 2 |
| Leucocrinum montanum | Sand Lily, Common starlily | 1 | 1 |
| Leucojum aestivum | Summer Snowflake | 1 | 0 |
| Levisticum officinale | Lovage, Garden lovage | 3 | 3 |
| Lewisia brachycalyx | Shortsepal lewisia | 2 | 0 |
| Lewisia columbiana | Columbian Bitterroot, Columbian lewisia, Wallowa lewisia | 2 | 0 |
| Lewisia pygmaea | Pigmy Bitterroot, Alpine lewisia | 2 | 0 |
| Lewisia rediviva | Bitter-Root | 2 | 2 |
| Liatris punctata | Snakeroot, Dotted blazing star, Mexican blazing star, Nebraska blazing star | 1 | 2 |
| Ligusticum canbyi | Osha | 3 | 0 |
| Ligusticum hultenii | Hulten's Licorice Root | 2 | 0 |
| Ligusticum scoticum | Scottish Lovage, Scottish licorice-root, Hulten's licorice-root | 3 | 2 |
| Lilium amabile | | 2 | 0 |
| Lilium auratum | Golden-Rayed Lily | 3 | 0 |
| Lilium brownii | Hong Kong Lily | 3 | 2 |
| Lilium bulbiferum | Fire Lily, Orange lily | 3 | 0 |
| Lilium callosum | | 2 | 0 |
| Lilium canadense | Meadow Lily, Canada lily | 3 | 1 |
| Lilium canadense editorum | Meadow Lily | 3 | 0 |
| Lilium canadense flavum | Meadow Lily | 3 | 0 |
| Lilium candidum | Madonna Lily | 3 | 2 |
| Lilium cernuum | | 2 | 0 |
| Lilium columbianum | Columbia Tiger Lily, Columbia lily, Oregon Lily, Tiger Lily | 3 | 0 |
| Lilium concolor | Morning Star Lily | 2 | 2 |
| Lilium dauricum | | 2 | 0 |
| Lilium davidii | | 2 | 0 |
| Lilium distichum | | 2 | 0 |
| Lilium formosanum | Formosa lily | 2 | 0 |
| Lilium formosanum pricei | | 2 | 0 |
| Lilium hansonii | | 2 | 0 |
| Lilium henryi | Henry's lily | 2 | 0 |
| Lilium japonicum | Bamboo Lily | 2 | 2 |
| Lilium japonicum platyfolium | Bamboo Lily | 2 | 2 |
| Lilium kelleyanum | Kelley's Lily | 2 | 0 |
| Lilium lancifolium | Tiger Lily, Devil Lily | 4 | 2 |
| Lilium leichtlinii | | 2 | 0 |
| Lilium leichtlinii maximowiczii | | 2 | 0 |
| Lilium longiflorum | White Trumpet Lily, Easter lily, Trumpet Lily | 3 | 2 |
| Lilium maculatum | | 2 | 0 |
| Lilium martagon | Turk's Cap Lily, Martagon lily | 2 | 1 |
| Lilium medeoloides | | 2 | 0 |
| Lilium monanthum | | 2 | 0 |
| Lilium nanum | | 2 | 0 |
| Lilium nepalense | | 2 | 1 |
| Lilium nobilissimum | | 2 | 0 |
| Lilium pardalinum | Panther Lily, Leopard lily, Pitkin Marsh lily, Vollmer's lilyShasta lily, Wiggins' lily | 2 | 0 |
| Lilium philadelphicum | Wood Lily | 3 | 1 |
| Lilium pomponium | | 2 | 0 |
| Lilium pumilum | Coral Lily | 2 | 2 |
| Lilium rubellum | | 2 | 0 |
| Lilium sargentiae | | 2 | 0 |
| Lilium speciosum | Oriental Lily | 2 | 1 |
| Lilium superbum | Swamp Lily, Turk's-cap lily, American Turk's Cap Lily | 3 | 0 |
| Lilium tsingtauense | | 2 | 0 |
| Lilium wallichianum | | 2 | 1 |
| Liriope graminifolia | Lilyturf | 2 | 1 |
| Liriope minor | | 2 | 1 |
| Liriope muscari | Lilyturf, Big blue lilyturf, Border Grass, Blue Lilyturf, Liriope | 2 | 1 |
| Liriope spicata | Lily Turf, Creeping liriope, Creeping Lilyturf | 2 | 1 |
| Lithospermum incisum | Narrow-Leaf Gromwell, Narrowleaf stoneseed | 1 | 2 |
| Litsea cubeba | Mountain Pepper, Litsea | 2 | 2 |
| Lomatium ambiguum | Biscuitroot, Wyeth biscuitroot | 4 | 1 |
| Lomatium canbyi | Biscuitroot, Canby's biscuitroot | 4 | 0 |
| Lomatium cous | Biscuitroot, Cous biscuitroot | 4 | 0 |
| Lomatium dissectum | Fernleaf Biscuitroot, Carrotleaf biscuitroot | 4 | 2 |
| Lomatium eurycarpum | | 2 | 0 |
| Lomatium farinosum | Northern Biscuitroot, Hamblen's biscuitroot | 3 | 0 |
| Lomatium foeniculaceum | Desert Biscuitroot, Inyo biscuitroot, Macdougal's biscuitroot | 3 | 0 |
| Lomatium gayeri | Biscuitroot | 4 | 0 |
| Lomatium gormanii | Gorman's biscuitroot | 3 | 0 |
| Lomatium grayi | Biscuitroot, Gray's biscuitroot | 4 | 0 |
| Lomatium macrocarpum | Bigseed Biscuitroot | 4 | 2 |
| Lomatium nudicaule | Pestle Parsnip, Barestem biscuitroot | 4 | 2 |
| Lomatium triternatum | Nineleaf Biscuitroot, Broadnineleaf biscuitroot | 3 | 1 |
| Lomatium utriculatum | Common Lomatium | 3 | 1 |
| Lunaria annua | Honesty, Annual honesty, Silver Dollar, Moneywort, Moonwort, Penny Flower, Money Plant | 2 | 0 |
| Lupinus littoralis | Seashore Lupine | 2 | 0 |
| Lupinus nootkatensis | Blue Lupine, Nootka lupine | 3 | 0 |
| Lycopus americanus | Water Horehound, American water horehound | 1 | 3 |
| Lycopus amplectens | Clasping water horehound | 1 | 0 |
| Lycopus asper | Rough Bugleweed | 1 | 1 |
| Lycopus europaeus | Gypsywort | 1 | 3 |
| Lycopus lucidus | Bugleweed, Rough bugleweed | 1 | 2 |
| Lycopus uniflorus | Bugleweed, Northern bugleweed | 3 | 1 |
| Lycopus virginicus | Bugleweed, Virginia water horehound | 2 | 3 |
| Lycoris radiata | Spider Lily, Red spider lily, Nerine Lily, Short tube Lycoris | 2 | 2 |
| Lycoris sanguinea | Spider Lily | 2 | 0 |
| Lycoris squamigera | Resurrection Lily, Hardy Amaryllis, Magic Lily, Autumn Lycoris, Naked Lady | 2 | 0 |
| Lysichiton americanus | Yellow Skunk Cabbage, American skunkcabbage | 3 | 2 |
| Lythrum salicaria | Purple Loosestrife | 2 | 3 |
| Macrotomia perennis | | 1 | 1 |
| Maianthemum canadense | Canada Beadruby, Canada mayflower | 1 | 1 |
| Manihot carthaginensis glaziovii | Ceara Rubber Tree, Tree cassava | 2 | 2 |
| Manihot esculenta | Cassava, Tapioca Plant, Yuca | 5 | 2 |
| Maranta arundinacea | Arrowroot | 4 | 3 |
| Matteuccia pensylvanica | Ostrich Fern | 2 | 0 |
| Matteuccia struthiopteris | Ostrich Fern | 2 | 1 |
| Medeola virginiana | Indian Cucumber Root | 4 | 1 |
| Megacarpaea delavayi | | 1 | 0 |
| Megacarpaea gigantea | | 3 | 0 |
| Megacarpaea megalocarpa | | 3 | 0 |
| Melilotus officinalis | Melilot, Sweetclover | 2 | 3 |
| Melilotus wolgicus | Sweetclover | 1 | 0 |
| Menyanthes trifoliata | Bogbean, Buckbean, Marsh Trefoil, | 2 | 3 |
| Mertensia maritima | Oyster Plant | 3 | 0 |
| Metaplexis japonica | Rough potato | 2 | 2 |
| Meum athamanticum | Spignel | 2 | 1 |
| Microseris nutans | Yam Daisy, Nodding microseris | 1 | 0 |
| Microseris procera | Yam Daisy | 2 | 0 |
| Microseris scapigera | Yam Daisy | 4 | 0 |
| Microtis unifolia | Onion-Leaf Orchis | 1 | 0 |
| Mirabilis expansa | Mauka | 3 | 0 |
| Mondia whitei | Mondia, White's Ginger | 3 | 4 |
| Monizia edulis | Carrot Tree | 2 | 0 |
| Monolepis nuttalliana | Poverty Weed, Nuttall's povertyweed | 3 | 1 |
| Moraea fugax | | 3 | 0 |
| Moringa oleifera | Horseradish Tree, Moringa, | 4 | 4 |
| Moringa peregrina | Moringa | 2 | 2 |
| Muscari comosum | Tassel Hyacinth, Tassel grape hyacinth | 3 | 1 |
| Muscari neglectum | Grape Hyacinth, Starch grape hyacinth | 2 | 0 |
| Musineon divaricatum | Wild Parsley, Leafy wildparsley, Hooker's wildparsley | 2 | 0 |
| Myriophyllum spicatum | Water Milfoil, Eurasian watermilfoil | 1 | 1 |
| Myrrhis odorata | Sweet Cicely, Anise | 4 | 3 |
| Nelumbo lutea | American Water Lotus, American lotus | 4 | 1 |
| Nelumbo nucifera | Sacred Water Lotus, Sacred lotus | 4 | 3 |
| Nepeta raphanorrhiza | | 2 | 0 |
| Nothoscordum gracile | Slender false garlic | 2 | 0 |
| Nuphar advena | Common Spatterdock, Yellow pond-lily, Varigated yellow pond-lily | 3 | 2 |
| Nuphar japonicum | | 3 | 1 |
| Nuphar lutea | Yellow Water Lily, Yellow pond-lily, Rocky Mountain pond-lily, Varigated yellow pond-lily | 3 | 2 |
| Nuphar polysepala | Spatterdock, Rocky Mountain pond-lily | 3 | 1 |
| Nuphar pumila | Yellow pond-lily | 3 | 1 |
| Nymphaea alba | White Water Lily, European white waterlily | 3 | 2 |
| Nymphaea candida | | 2 | 2 |
| Nymphaea odorata | Fragrant Water Lily, American white waterlily | 3 | 3 |
| Nymphaea tetragona | Pygmy Water Lily | 2 | 0 |
| Nymphaea tuberosa | Tuberous Water Lily, American white waterlily | 3 | 3 |
| Oenanthe javanica | Water Dropwort, Java waterdropwort, Stolon waterdropwort | 3 | 2 |
| Oenanthe peucidanifolia | | 1 | 0 |
| Oenanthe pimpinelloides | Meadow Parsley, Corkyfruit waterdropwort | 1 | 0 |
| Oenanthe sarmentosa | Water Dropwort,Water parsely | 3 | 1 |
| Oenothera albicaulis | Whitest Evening Primrose | 2 | 1 |
| Oenothera biennis | Evening Primrose, Sun Drop, Common evening primrose | 3 | 5 |
| Oenothera brevipes | Golden Suncup | 2 | 0 |
| Oenothera elata hookeri | Hooker's Evening Primrose | 2 | 1 |
| Oenothera glazioviana | Large-Flower Evening Primrose, Redsepal evening primrose | 2 | 2 |
| Onoclea sensibilis | Sensitive Fern | 2 | 2 |
| Ononis repens | Rest Harrow, Common restharrow | 2 | 1 |
| Ononis spinosa | Spiny Rest Harrow | 2 | 2 |
| Onosma hispidum | | 1 | 1 |
| Ophiopogon japonicus | Snake's Beard, Dwarf lilyturf, Mondo Grass, Monkey Grass, Dwarf Lilyturf | 2 | 3 |
| Ophrys apifera | Bee Orchid | 2 | 2 |
| Ophrys araneola | | 2 | 2 |
| Ophrys bertolonii | | 2 | 2 |
| Ophrys bombyliflora | | 2 | 2 |
| Ophrys fusca | Brown Bee Orchid | 2 | 2 |
| Ophrys holoserica | Late Spider Orchid | 2 | 2 |
| Ophrys insectifera | Fly Orchid | 2 | 2 |
| Ophrys iricolor | | 2 | 2 |
| Ophrys lutea | Yellow Bee Orchid | 2 | 2 |
| Ophrys scolopax | Woodcock Orchid | 2 | 2 |
| Ophrys sphegodes | Early Spider Orchid | 2 | 2 |
| Ophrys tenthredinifera | Sawfly Orchid | 2 | 2 |
| Ophrys vernixia | | 2 | 2 |
| Oplopanax horridus | Devil's Club | 2 | 2 |
| Oplopanax japonicus | | 2 | 1 |
| Orchis coriophora | Bug Orchis | 2 | 2 |
| Orchis italica | | 2 | 2 |
| Orchis laxiflora | Marsh Orchis | 2 | 2 |
| Orchis mascula | Early Purple Orchis | 2 | 2 |
| Orchis militaris | Military Orchis | 2 | 2 |
| Orchis morio | Green-Winged Orchid, Green-winged orchid | 2 | 2 |
| Orchis ustulata | Dark-Winged Orchis | 2 | 2 |
| Oreomyrrhis hookeri | | 1 | 0 |
| Ornithogalum narbonense | Star Of Bethlehem | 1 | 0 |
| Ornithogalum umbellatum | Star Of Bethlehem, Dove's Dung | 3 | 1 |
| Orobanche ammophyla | Lie Dang | 2 | 2 |
| Orobanche californica | California Broomrape, Jepson's broomrape | 2 | 1 |
| Orobanche cernua | Nodding broomrape | 1 | 0 |
| Orobanche grayana | | 1 | 1 |
| Orobanche ludoviciana | Broom Rape, Louisiana broomrape, Manyflower broomrape | 1 | 1 |
| Orobanche pinorum | Conifer broomrape | 1 | 1 |
| Orobanche tuberosa | Ground Cone | 1 | 1 |
| Orobanche uniflora | Oneflowered broomrape | 1 | 1 |
| Orogenia linearifolia | Indian Potato, Great Basin Indian potato | 4 | 0 |
| Orontium aquaticum | Golden Club | 3 | 0 |
| Osmorhiza aristata | | 3 | 0 |
| Osmorhiza chilensis | | 3 | 0 |
| Osmorhiza claytonii | Woolly Sweet-Cicely, Clayton's sweetroot | 3 | 1 |
| Osmorhiza longistylis | Aniseroot, Longstyle sweetroot | 3 | 1 |
| Osmorhiza obtusa | | 3 | 0 |
| Osmorhiza occidentalis | Western Sweet-Cicely, Western sweetroot | 3 | 2 |
| Osmunda japonica | Zenmai | 2 | 0 |
| Oxalis bifida | | 2 | 0 |
| Oxalis corymbosa | Lilac Oxalis, Pink woodsorrel | 2 | 0 |
| Oxalis deppei | Iron Cross Plant | 4 | 0 |
| Oxalis enneaphylla | Scurvy Grass | 2 | 0 |
| Oxalis pes-caprae | Bermuda Buttercup | 2 | 0 |
| Oxalis stricta | Yellow Wood Sorrel, Common yellow oxalis, Common Yellow Wood Sorrel, Oxalis | 2 | 1 |
| Oxalis tetraphylla | | 3 | 0 |
| Oxalis triangularis | Oxalis | 3 | 0 |
| Oxalis tuberosa | Oca | 5 | 0 |
| Oxalis violacea | Violet Wood Sorrel | 3 | 1 |
| Oxytropis lambertii | Crazy Weed, Purple locoweed | 2 | 0 |
| Pachyrhizus ahipa | Ahipa, Yam bean | 3 | 0 |
| Pachyrhizus erosus | Yam Bean, Jicama, Mexican Yam | 4 | 0 |
| Pachyrhizus tuberosus | Jicama, Ajipo | 3 | 0 |
| Paeonia anomala | Anomalous peony, Common Peony | 1 | 3 |
| Paeonia brownii | Brown's Peony | 1 | 2 |
| Paeonia hybrida | | 1 | 1 |
| Paeonia japonica | Yama-Shakuyaku | 1 | 1 |
| Paeonia lactiflora | Chinese Peony, Peony | 1 | 3 |
| Panax ginseng | Ginseng, Chinese ginseng | 2 | 5 |
| Panax quinquefolius | American Ginseng | 1 | 3 |
| Panax trifolius | Ground Nut, Dwarf ginseng | 1 | 2 |
| Pancratium maritimum | Sea Daffodil | 1 | 0 |
| Pandanus julianettii | Karuka | 4 | 0 |
| Panicum turgidum | Desert Grass. Turgid panic grass, Afezu | 2 | 0 |
| Parosella lanata | Woolly Parosella | 2 | 0 |
| Parthenocissus quinquefolia | Virginia Creeper, Woodbine | 2 | 2 |
| Passiflora quadrangularis | Giant Granadilla, Badea | 4 | 2 |
| Pastinaca sativa | Parsnip, Wild parsnip | 4 | 1 |
| Pedicularis arctica | Arctic lousewort | 1 | 0 |
| Pedicularis hirsuta | Hairy lousewort | 1 | 0 |
| Pedicularis kanei | | 2 | 0 |
| Pedicularis langsdorffii | Lousewort, Langsdorf's lousewort, Arctic lousewort | 1 | 0 |
| Pedicularis sudetica | Lousewort, Sudetic lousewort, Pacific lousewort | 2 | 0 |
| Pelargonium australe | Ivy Geranium | 1 | 1 |
| Pelargonium triste | | 1 | 1 |
| Peltandra sagittifolia | White Arrow Arum | 2 | 0 |
| Peltandra virginica | Green Arrow Arum | 3 | 0 |
| Pentadiplandra brazzeana | Joy perfume tree, j'oubli | 4 | 4 |
| Perideridia gairdneri | Yampa, Gardner's yampah, Common yampah | 5 | 2 |
| Perideridia oregana | Squaw Potato, Oregon yampah | 3 | 0 |
| Petasites frigidus | Sweet Coltsfoot, Arctic sweet coltsfoot, Arrowleaf sweet coltsfoot, Golden Palms Coltsfoot, Butterb | 2 | 1 |
| Peteria scoparia | Rush peteria | 1 | 0 |
| Petroselinum crispum tuberosum | Hamburg Parsley | 4 | 3 |
| Phaseolus coccineus | Runner Bean, Scarlet runner | 4 | 0 |
| Phlomis tuberosa | Tuberous Jerusalem sage | 2 | 0 |
| Phragmites australis | Common Reed, American common reed, Hybrid common reed, European common reed, Subtropical common re | 5 | 2 |
| Phyllospadix scouleri | Surf Grass, Scouler's surfgrass | 2 | 0 |
| Phyllospadix torreyi | Sea Grass, Torrey's surfgrass | 2 | 0 |
| Phyteuma japonicum | | 2 | 0 |
| Phyteuma orbiculare | Roundheaded Rampion | 2 | 0 |
| Phyteuma spicatum | Spiked Rampion | 2 | 0 |
| Phytolacca acinosa | Indian Poke | 2 | 3 |
| Phytolacca esculenta | | 2 | 2 |
| Pinellia ternata | Ban Xia, Crowdipper | 1 | 3 |
| Plantago major | Common Plantain, Cart Track Plant,White Man's Foot ,Plantain | 2 | 3 |
| Platanthera bifolia | Butterfly Orchid | 2 | 1 |
| Platanthera dilatata | White Bog-Orchid, Scentbottle, Sierra bog orchid | 3 | 1 |
| Platycodon grandiflorus | Balloon Flower | 2 | 3 |
| Plectranthus rotundifolius | Chinese Potato, Hausa Potato | 3 | 2 |
| Pleurospermum camtschaticum | | 1 | 0 |
| Podolepis jaceoides | Copperwire Daisy | 1 | 0 |
| Polygala japonica | | 1 | 2 |
| Polygala sibirica | Yuan Zhi | 1 | 3 |
| Polygala tenuifolia | Yuan Zhi | 1 | 3 |
| Polygonatum biflorum | Small Solomon's Seal | 2 | 1 |
| Polygonatum commutatum | King Solomon's Seal, Smooth Solomon's seal | 2 | 1 |
| Polygonatum falcatum | | 2 | 1 |
| Polygonatum humile | | 2 | 1 |
| Polygonatum inflatum | | 2 | 1 |
| Polygonatum involucratum | | 2 | 0 |
| Polygonatum lasianthum | | 2 | 0 |
| Polygonatum macropodum | | 2 | 1 |
| Polygonatum maximowiczii | | 2 | 0 |
| Polygonatum multiflorum | Solomon's Seal, Eurasian Solomon's seal | 2 | 3 |
| Polygonatum odoratum | Solomon's Seal | 2 | 3 |
| Polygonatum odoratum thunbergii | | 2 | 0 |
| Polygonatum pubescens | Hairy Solomon's Seal | 2 | 1 |
| Polygonatum sibiricum | Huang Jing | 2 | 2 |
| Polygonatum stenanthum | | 2 | 0 |
| Polygonatum verticillatum | Whorled Solomon's Seal | 2 | 0 |
| Polygonum bistorta | Bistort, Meadow bistort, Snakeweed | 3 | 3 |
| Polygonum bistortoides | American Bistort | 3 | 1 |
| Polygonum divaricatum | | 1 | 0 |
| Polygonum fugax | | 3 | 0 |
| Polygonum japonicum | Japanese Knotweed, Mexican Bamboo, Japanese Knotweed | 3 | 3 |
| Polygonum multiflorum | He Shou Wu, Tuber fleeceflower | 2 | 3 |
| Polygonum viviparum | Alpine Bistort | 3 | 1 |
| Polymnia edulis | Yacon Strawberry | 4 | 0 |
| Polypodium glycyrrhiza | Licorice Fern | 1 | 2 |
| Polypodium vulgare | Polypody, Adders Fern, Golden Maidenhair Fern, Wall Fern, Common Polypod Fern | 2 | 3 |
| Polyscias fruticosa | Ming Aralia, Chinese Ariala | 2 | 2 |
| Polystichum munitum | Giant Holly Fern, Western swordfern | 1 | 2 |
| Portulaca grandiflora | Rose Moss | 2 | 2 |
| Potamogeton crispus | Curly Pondweed | 2 | 0 |
| Potamogeton natans | Broad-Leaved Pondweed, Floating pondweed | 3 | 1 |
| Potamogeton oxyphyllus | | 2 | 0 |
| Potamogeton pectinatus | Fennel-Leaved Pondweed | 3 | 1 |
| Potentilla anserina | Silverweed | 3 | 3 |
| Potentilla bicolor | | 1 | 0 |
| Potentilla discolor | | 2 | 1 |
| Potentilla egedei | Pacific Silverweed | 2 | 1 |
| Potentilla erecta | Tormentil, Erect cinquefoil | 1 | 3 |
| Potentilla multifida | | 2 | 0 |
| Potentilla nepalensis | Nepal Cinquefoil, Cinquefoil | 2 | 1 |
| Proboscidea louisianica | Unicorn Plant, Ram's horn | 2 | 0 |
| Prosopis glandulosa | Honeypod mesquite. Glandular mesquite | 3 | 2 |
| Prosopis juliflora | Mesquite, Honey Mesquite | 3 | 2 |
| Psophocarpus tetragonolobus | Winged Bean | 3 | 0 |
| Psoralea argophylla | Silverleaf Scurf Pea, Silverleaf Indian breadroot | 2 | 1 |
| Psoralea californica | California Indian breadroot | 2 | 0 |
| Psoralea canescens | Buckroot | 2 | 1 |
| Psoralea castorea | Beaver Indian breadroot | 4 | 0 |
| Psoralea cuspidata | Indian Breadroot, Largebract Indian breadroot | 2 | 0 |
| Psoralea esculenta | Breadroot, Large Indian breadroot | 5 | 1 |
| Psoralea hypogaea | Small Indian Breadroot | 4 | 0 |
|