| Latin Name | Common Name | Edibility Rating | Medicinal Rating |
| Abutilon ochsenii | | 3 | 0 |
| Abutilon pictum | Abutilon, Parlour Maple, Flowering Maple, Spotted | 3 | 0 |
| Abutilon vitifolium | | 3 | 0 |
| Abutilon x hybridum | Chinese Lantern, Flowering Maple | 3 | 0 |
| Abutilon x milleri | Trailing Abutilon | 3 | 0 |
| Abutilon x suntense | | 3 | 0 |
| Acanthus mollis | Bear's Breeches | 0 | 2 |
| Acer acuminatum | | 1 | 0 |
| Acer argutum | | 2 | 0 |
| Acer caesium | | 0 | 1 |
| Acer campestre | Field Maple, Hedge maple | 2 | 1 |
| Acer carpinifolium | Hornbeam Maple | 2 | 0 |
| Acer circinatum | Vine Maple | 2 | 1 |
| Acer crataegifolium | Hawthorn-Leaved Maple | 0 | 0 |
| Acer glabrum | Rock Maple, Rocky Mountain maple, Douglas maple, Greene's maple, New Mexico maple, Torrey maple | 2 | 1 |
| Acer palmatum | Japanese Maple | 2 | 0 |
| Acer pensylvanicum | Moosewood, Striped maple, Moosewood, Pennsylvania Maple | 0 | 1 |
| Acer sterculiaceum | | 0 | 0 |
| Acer tataricum | Tatarian Maple | 2 | 0 |
| Acer truncatum | Shantung Maple, Purpleblow Maple | 1 | 0 |
| Acer ukurunduense caudatum | | 1 | 0 |
| Achlys triphylla | Vanilla leaf, Sweet after death | 0 | 1 |
| Achyranthes faureri | | 1 | 1 |
| Achyranthes japonica | Japanese Chaff Flower | 0 | 3 |
| Aconitum balfourii | | 0 | 1 |
| Aconitum carmichaelii | Japanese Aconite, Carmichael's monkshood | 0 | 2 |
| Aconitum chasmanthum | | 0 | 1 |
| Aconitum chinense | | 0 | 1 |
| Aconitum columbianum | Columbian monkshood | 0 | 1 |
| Aconitum delphinifolium | | 0 | 1 |
| Aconitum dienorrhizum | | 0 | 1 |
| Aconitum ferox | Indian aconite | 0 | 1 |
| Aconitum fischeri | Fischer monkshood | 0 | 1 |
| Aconitum gammiei | | 0 | 1 |
| Aconitum hemsleyanum | | 0 | 1 |
| Aconitum heterophyllum | | 1 | 2 |
| Aconitum japonicum | | 0 | 2 |
| Aconitum koreanum | Korean Monk's Hood | 1 | 0 |
| Aconitum kusnezoffii | Bei Wu Tou | 0 | 1 |
| Aconitum lycoctonum | Wolfsbane | 1 | 1 |
| Aconitum lycoctonum vulparia | Wolfbane | 1 | 1 |
| Aconitum maximum | Kamchatka aconite | 0 | 0 |
| Aconitum mokchangense | | 1 | 0 |
| Aconitum multifidum | | 1 | 0 |
| Aconitum napellus | Aconite, Venus' chariot, Wolfsbane Garden, Monk's Hood Garden | 1 | 2 |
| Aconitum orientale | | 0 | 1 |
| Aconitum palmatum | | 0 | 1 |
| Aconitum rotundifolium | | 1 | 0 |
| Aconitum septentrionale | | 1 | 0 |
| Aconitum uncinatum | Wild Monkshood, Southern blue monkshood | 0 | 1 |
| Aconitum violaceum | | 1 | 1 |
| Aconitum volubile | | 1 | 1 |
| Actaea pachypoda | White Baneberry | 0 | 2 |
| Actaea rubra | Red Baneberry | 0 | 2 |
| Actaea spicata | Herb Christopher, Baneberry | 0 | 1 |
| Actinidia arguta | Tara Vine | 5 | 0 |
| Actinidia arguta cordifolia | | 4 | 0 |
| Actinidia arguta rufa | | 4 | 0 |
| Actinidia arisanensis | | 3 | 0 |
| Actinidia asymmetrica | | 3 | 0 |
| Actinidia callosa | | 3 | 0 |
| Actinidia callosa formosana | | 3 | 0 |
| Actinidia callosa henryi | | 3 | 0 |
| Actinidia callosa indochinensis | | 3 | 0 |
| Actinidia callosa pubescens | | 3 | 0 |
| Actinidia chinensis | Kiwi | 4 | 2 |
| Actinidia coriacea | | 3 | 0 |
| Actinidia deliciosa | Kiwi Fruit | 5 | 1 |
| Actinidia eriantha | | 3 | 0 |
| Actinidia fortunatii | | 3 | 0 |
| Actinidia fulvicoma | | 3 | 0 |
| Actinidia giraldii | | 3 | 0 |
| Actinidia glabra | | 3 | 0 |
| Actinidia hemsleyana | | 3 | 0 |
| Actinidia henryi | | 3 | 0 |
| Actinidia holotricha | | 3 | 0 |
| Actinidia hypoleuca | | 3 | 0 |
| Actinidia kiusiana | | 3 | 0 |
| Actinidia kolomikta | Kiwi | 4 | 0 |
| Actinidia kolomikta gagnepainii | | 3 | 0 |
| Actinidia kwangsiensis | | 3 | 0 |
| Actinidia lanceolata | | 3 | 0 |
| Actinidia latifolia | | 3 | 0 |
| Actinidia longicauda | | 3 | 0 |
| Actinidia maloides | | 3 | 0 |
| Actinidia melanandra | Red Kiwi | 4 | 0 |
| Actinidia melliana | | 3 | 0 |
| Actinidia petelotii | | 3 | 0 |
| Actinidia pilosula | | 3 | 0 |
| Actinidia polygama | Silver Vine | 4 | 2 |
| Actinidia polygama lecomtei | | 3 | 0 |
| Actinidia purpurea | Purple hardy kiwi | 4 | 0 |
| Actinidia rubricaulis | | 3 | 0 |
| Actinidia rubus | | 3 | 0 |
| Actinidia rudis | | 3 | 0 |
| Actinidia sabiifolia | | 3 | 0 |
| Actinidia strigosa | | 3 | 0 |
| Actinidia tetramera | | 3 | 0 |
| Actinidia trichogyna | | 3 | 0 |
| Actinidia valvata | | 3 | 0 |
| Actinidia venosa | | 3 | 0 |
| Actinidia x fairchildii | | 4 | 0 |
| Adiantum capillus-veneris | Maidenhair Fern, Common maidenhair, Southern Maidenhair Fern, Venus Maidenhair Fern, Venus's Hair Fe | 2 | 2 |
| Adiantum pedatum | Northern Maidenhair,American Maidenhair Fern | 0 | 2 |
| Adiantum venustum | Evergreen Maidenhair Fern | 0 | 1 |
| Adonis amurensis | | 0 | 1 |
| Aegopodium alpestre | | 1 | 0 |
| Aegopodium podagraria | Ground Elder, Bishop's goutweed, Goutweed, Ground Elder, Bishop's Weed | 3 | 2 |
| Aesculus parviflora | Bottlebrush buckeye | 2 | 1 |
| Aesculus pavia | Red Buckeye | 2 | 1 |
| Aethusa cynapium | Fool's Parsley | 1 | 1 |
| Agalinis tenuifolia | Slenderleaf False Foxglove | 0 | 1 |
| Ageratina altissima | White Snakeroot, Richweed | 0 | 2 |
| Ageratina aromatica | | 1 | 1 |
| Ageratina herbacea | Fragrant Snakeroot | 0 | 1 |
| Ageratina occidentalis | Western Snakeroot | 0 | 1 |
| Agrimonia parviflora | Harvestlice | 0 | 2 |
| Ajuga australis | Australian Bugle | 0 | 1 |
| Ajuga bracteosa | Bugle, Lungememen | 0 | 1 |
| Ajuga decumbens | | 0 | 2 |
| Ajuga reptans | Bugle, Common Bugelweed, Bugleweed, Carpet Bugleweed, Carpetweed, Carpet Bugle | 2 | 3 |
| Akebia quinata | Akebia, Chocolate vine, Fiveleaf Akebia, Chocolate Vine | 4 | 2 |
| Akebia trifoliata | Akebia, Threeleaf Akebia | 4 | 2 |
| Akebia x pentaphylla | Five Leaved Akebia | 4 | 0 |
| Alangium platanifolium | Alangium | 1 | 1 |
| Alcea rosea | Hollyhock | 3 | 2 |
| Aleurites cordata | Japan Wood-Oil Tree | 0 | 0 |
| Aleurites fordii | Tung Tree, Tung Oil Tree, Wood Oil Tree China | 1 | 3 |
| Alkanna tinctoria | Alkanet, Alkanna | 1 | 2 |
| Alliaria petiolata | Garlic Mustard | 3 | 2 |
| Allium ampeloprasum | Wild Leek, Broadleaf wild leek | 5 | 3 |
| 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 moly | Golden Garlic, Ornamental Onion | 4 | 2 |
| Allium paradoxum | Few-Flowered Leek | 5 | 2 |
| Allium pendulinum | | 3 | 2 |
| Allium tricoccum | Wood Leek, Ramp | 4 | 2 |
| Allium triquetrum | Three-Cornered Leek | 5 | 2 |
| Allium ursinum | Wild Garlic | 5 | 3 |
| Alnus tenuifolia | Mountain Alder, Thinleaf alder | 1 | 2 |
| Amelanchier alnifolia | Saskatoon, Saskatoon serviceberry, Serviceberry | 5 | 2 |
| Amelanchier alnifolia cusickii | Cusick's Serviceberry | 4 | 1 |
| Amelanchier alnifolia semiintegrifolia | Pacific Serviceberry | 5 | 1 |
| Amelanchier arborea | Downy Serviceberry, Alabama serviceberry, Juneberry, Common Serviceberry, Downy Serviceberry | 3 | 1 |
| Amelanchier asiatica | Korean Juneberry | 3 | 0 |
| Amelanchier bartramiana | Oblongfruit serviceberry | 3 | 0 |
| Amelanchier basalticola | Dwarf Service-berry | 4 | 0 |
| Amelanchier canadensis | Juneberry, Canadian serviceberry, Serviceberry Downy, Shadblow, Shadbush, Serviceberry | 4 | 1 |
| Amelanchier confusa | | 5 | 0 |
| Amelanchier humilis | Low serviceberry | 3 | 0 |
| Amelanchier huroensis | | 3 | 0 |
| Amelanchier interior | Pacific serviceberry | 3 | 0 |
| Amelanchier intermedia | June berry, | 3 | 0 |
| Amelanchier laevis | Allegheny Shadberry, Allegheny serviceberry, Smooth Serviceberry | 5 | 1 |
| Amelanchier lamarckii | Apple Serviceberry | 5 | 0 |
| Amelanchier obovalis | Southern Juneberry, Coastal serviceberry | 3 | 0 |
| Amelanchier ovalis | Snowy Mespilus, Dwarf Garden Serviceberry | 2 | 0 |
| Amelanchier ovalis integrifolia | | 2 | 0 |
| Amelanchier pallida | Pale Serviceberry | 3 | 1 |
| Amelanchier parviflora | | 2 | 0 |
| Amelanchier sanguinea | Roundleaf Serviceberry, Gaspé serviceberry | 3 | 0 |
| Amelanchier spicata | | 3 | 0 |
| Amelanchier stolonifera | Quebec Berry, Running serviceberry | 5 | 1 |
| Amelanchier utahensis | Utah Serviceberry, Coville's serviceberry | 3 | 1 |
| Amelanchier weigandii | | 3 | 0 |
| Amelanchier x grandiflora | Apple Serviceberry | 5 | 0 |
| Amelasorbus jackii | Jack's amelasorbus | 2 | 0 |
| Amianthium muscitoxicum | Fly Poison | 0 | 1 |
| Amorpha fruticosa | False Indigo, False indigo bush | 1 | 2 |
| Amorphophallus paeoniifolius | Elephant Yam, Whitespot giant arum | 4 | 2 |
| Amorphophallus rivieri | Devil's Tongue, Umbrella Arum, Leopard Palm, Snake Palm | 2 | 2 |
| Ampelopsis arborea | Pepper Vine | 2 | 0 |
| Ampelopsis brevipedunculata | Porcelain Berry, Amur peppervine, Blueberry Climber, Porcelain Berry Vine | 2 | 2 |
| Ampelopsis humulifolia | | 2 | 0 |
| Ampelopsis japonica | | 0 | 2 |
| Amphicarpaea bracteata | Hog Peanut, American hogpeanut | 5 | 1 |
| Amphicarpaea edgeworthii | | 4 | 0 |
| Amphicarpaea pitcheri | Hog Peanut | 5 | 0 |
| Amyema pendulum | Drooping Mistletoe | 1 | 0 |
| Andromeda glaucophylla | Bog Rosemary | 2 | 0 |
| Andromeda polifolia | Marsh Andromeda, Bog rosemary | 2 | 1 |
| Anemarrhena asphodeloides | Zhi Mu | 0 | 3 |
| Anemone altaica | | 0 | 1 |
| Anemone canadensis | Canadian Anemone | 0 | 2 |
| Anemone cylindrica | Candle Anemone | 0 | 2 |
| Anemone flaccida | | 1 | 0 |
| Anemone nemorosa | Wood Anemone, European thimbleweed | 0 | 1 |
| Anemone nikoensis | | 1 | 0 |
| Anemone quinquefolia | Wind Flower, Wood anemone, Twoleaf anemone, Nightcaps | 0 | 1 |
| Anemone rivularis | Cao Yu Mei | 1 | 2 |
| Anemone stolonifera | | 1 | 0 |
| Anemone virginiana | Tall Thimbleweed | 0 | 1 |
| Anemone vitifolia | | 0 | 2 |
| Anemonella thalictroides | Rue-Anemone | 2 | 1 |
| Angelica acutiloba | Dong Dang Gui | 2 | 1 |
| Angelica anomala | | 0 | 2 |
| Angelica archangelica | Angelica, Norwegian angelica | 3 | 3 |
| Angelica atropurpurea | Purplestem Angelica | 2 | 2 |
| Angelica crucifolia | | 2 | 0 |
| Angelica dahurica | Bai Zhi | 2 | 3 |
| Angelica decursiva | | 2 | 2 |
| Angelica edulis | | 2 | 0 |
| Angelica genuflexa | Kneeling Angelica | 2 | 1 |
| Angelica gigas | Giant Angelica, Purple Parsnip, Korean Angelica | 2 | 2 |
| Angelica glauca | | 2 | 1 |
| Angelica koreana | | 2 | 0 |
| Angelica laxiflora | | 0 | 1 |
| Angelica megaphylla | | 2 | 0 |
| Angelica polymorpha | | 2 | 2 |
| Angelica pubescens | Du Huo | 2 | 3 |
| Angelica sinensis | Dang Gui - Dong Quai - Chinese Angelica | 0 | 5 |
| Angelica sylvestris | Wild Angelica,Woodland angelica | 3 | 2 |
| Angelica uchiyamanae | | 0 | 1 |
| Angelica ursina | | 2 | 0 |
| Angiopteris fokiensis | | 0 | 1 |
| Angophora cordifolia | Smooth-Barked Apple | 0 | 1 |
| Angophora floribunda | Rough-Barked Apple | 0 | 0 |
| Anthriscus cerefolium | Chervil, Garden chervil | 3 | 2 |
| Anthriscus sylvestris | Cow Parsley, Wild chervil | 2 | 1 |
| Apocynum androsaemifolium | Spreading Dogbane | 0 | 2 |
| Apocynum cannabinum | Indian Hemp | 2 | 2 |
| Aquilegia brevistyla | Smallflower columbine | 2 | 1 |
| Aquilegia buergeriana | | 2 | 0 |
| Aquilegia canadensis | Wild Columbine, Red columbine, Meeting Houses, Common Columbine | 2 | 2 |
| Aquilegia coerulea | Rocky Mountain Columbine, Colorado blue columbine, Dailey's columbine, White Colorado columbine | 2 | 1 |
| Aquilegia flabellata | Fan Columbine, Dwarf Columbine | 2 | 0 |
| Aquilegia flavescens | Columbine, Yellow columbine | 2 | 1 |
| Aquilegia formosa | Western Columbine | 2 | 2 |
| Aquilegia formosa truncata | Columbine | 2 | 2 |
| Aquilegia jonesii | Columbine, Jones' columbine, Blue limestone columbine | 2 | 1 |
| Aquilegia karelinii | | 2 | 0 |
| Aquilegia pubescens | Columbine, Sierra columbine | 2 | 1 |
| Aquilegia shockleyi | | 2 | 1 |
| Aquilegia vulgaris | Columbine, European columbine, Granny's Bonnet, European Crowfoot | 2 | 1 |
| Arabis pendula | | 1 | 0 |
| Aralia chinensis | Chinese Angelica Tree, Pumila Spirea, Chinese Astilbe | 2 | 2 |
| Aralia continentalis | Manchurian Spikenard | 2 | 0 |
| Aralia cordata | Udo | 4 | 2 |
| Aralia elata | Japanese Angelica Tree, Angelica Tree | 3 | 2 |
| Aralia hispida | Bristly Sarsaparilla | 2 | 1 |
| Aralia mandschurica | Manchurian Angelica Tree | 2 | 2 |
| Aralia nudicaulis | Wild Sarsaparilla | 4 | 3 |
| Aralia racemosa | American Spikenard | 3 | 3 |
| Aralia schmidtii | Sakhalin Spikenard | 2 | 0 |
| Aralia spinosa | Hercule's Club, Aralia spinosa, American Angelica Tree, Hercules' Club, Devil's Walking Stick | 2 | 2 |
| Arbutus canariensis | Canary Madrona | 2 | 0 |
| Arbutus menziesii | Madrona, Pacific madrone, Pacific Madrone | 3 | 2 |
| Arbutus texana | Texas Madrone | 2 | 1 |
| Arbutus unedo | Strawberry Tree | 4 | 2 |
| Arbutus x andrachnoides | | 4 | 0 |
| Arctostaphylos patula | Greenleaf Manzanita | 3 | 1 |
| Arctostaphylos uva-ursi | Bearberry | 3 | 4 |
| Ardisia crenata | Coralberry, Hen's eyes, Spiceberry | 0 | 1 |
| Ardisia crispa | | 1 | 1 |
| Ardisia japonica | Marlberry | 0 | 3 |
| Ardisia sieboldii | Duo Zhi Zi Jin Niu | 1 | 0 |
| Arisaema amurense | Tian Nan Xing | 2 | 3 |
| Arisaema consanguineum | Tian Nan Xing | 1 | 3 |
| Arisaema costatum | | 2 | 0 |
| Arisaema dracontium | Green-Dragon | 1 | 1 |
| Arisaema flavum | | 2 | 1 |
| Arisaema jacquemontii | | 2 | 0 |
| Arisaema negishii | | 2 | 0 |
| Arisaema peninsulare | | 1 | 0 |
| Arisaema quinatum | Indian Turnip, Jack in the pulpit | 1 | 0 |
| Arisaema ringens | | 0 | 1 |
| Arisaema serratum | | 2 | 1 |
| Arisaema thunbergii | | 0 | 1 |
| Arisaema tortuosum | Arisaema | 2 | 2 |
| Arisaema triphyllum | Jack In The Pulpit, Dragonroot, Indian Turnip | 3 | 2 |
| Arisaema utile | | 2 | 0 |
| Arisarum vulgare | Friar's Cowl | 2 | 0 |
| Aristolochia macrophylla | Pipevine, Dutchman's Pipe | 0 | 1 |
| Aristolochia molissima | | 0 | 2 |
| Aristolochia reticulata | Texas Dutchman's Pipe | 0 | 2 |
| Aristolochia rotunda | Snakeroot | 0 | 2 |
| Aristolochia serpentaria | Virginia Snakeroot | 0 | 3 |
| Aristolochia tomentosa | Dutchman's Pipe, Woolly dutchman's pipe | 0 | 2 |
| Armoracia rusticana | Horseradish, Red Cole | 3 | 3 |
| Arnica montana | Arnica, Mountain arnica | 0 | 3 |
| Aronia arbutifolia | Red Chokeberry | 2 | 0 |
| Aronia melanocarpa | Black Chokeberry, Black Berried Aronia | 3 | 1 |
| Aronia prunifolia | Purple Chokeberry | 2 | 0 |
| Artemisia abrotanum | Southernwood | 1 | 3 |
| Artemisia anomala | | 0 | 2 |
| Artemisia montana | | 1 | 0 |
| Artemisia sacrorum | Russian Wormwood | 1 | 0 |
| Arthromeris wallichiana | | 1 | 1 |
| Arum dioscoridis | | 2 | 1 |
| Arum italicum | Italian lords and ladies, Italian Arum | 2 | 0 |
| Arum maculatum | Cuckoo Pint | 2 | 1 |
| Aruncus dioicus | Goat's Beard, Bride's feathers | 2 | 2 |
| Arundinaria gigantea | Canebrake bamboo, Cane Reed, Giant cane | 3 | 1 |
| Asarum arifolium | | 0 | 1 |
| Asarum blumei | | 0 | 1 |
| Asarum canadense | Snake Root, Canadian wildginger, Canada Wild Ginger, Wild Ginger | 3 | 3 |
| Asarum caudatum | Wild Ginger, British Columbia wildginger | 3 | 2 |
| Asarum dilatatum | | 2 | 0 |
| Asarum europaeum | Asarabacca, European Wild Ginger | 0 | 2 |
| Asarum forbesii | Du Heng | 0 | 1 |
| Asarum heterotropoides | | 0 | 2 |
| Asarum maximum | | 0 | 1 |
| Asarum nipponicum | | 1 | 0 |
| Asarum reflexum | | 2 | 0 |
| Asarum shuttleworthii | Asarabacca, Mottled Wild Ginger | 2 | 0 |
| Asarum sieboldii | Wild Ginger | 0 | 2 |
| Asarum takaoi | | 1 | 0 |
| Aspidistra elatior | Aspidistra, Cast Iron Plant | 0 | 2 |
| Asplenium adiantum-nigrum | Black Spleenwort | 0 | 2 |
| Asplenium bulbiferum | Hen And Chicken Fern, Parsley Fern, Mother Spleenwort | 1 | 0 |
| Asplenium ceterach | Scale Fern | 0 | 2 |
| Asplenium scolopendrium | Hart's Tongue Fern | 0 | 2 |
| Asplenium trichomanes | Maidenhair Spleenwort, Dense spleenwort, Toothed spleenwort, Brightgreen spleenwort | 1 | 1 |
| Astelia alpina | | 2 | 0 |
| Astelia grandis | | 2 | 0 |
| Astelia nervosa | | 2 | 0 |
| Astelia solandri | | 2 | 0 |
| Aster cordifolius | Common Blue Wood Aster | 2 | 1 |
| Aster macrophyllus | Bigleaf Aster | 2 | 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 |
| Astilbe chinensis | Pumila Spirea,Chinese Astilbe | 1 | 0 |
| Astilbe longicarpa | | 1 | 0 |
| Astrantia major | Great Masterwort | 0 | 1 |
| Athyrium filix-femina | Lady Fern, Common ladyfern, Subarctic ladyfern, Asplenium ladyfern, Southern Lady Fern, Tatting Fer | 1 | 2 |
| Athyrium melanolepis | | 1 | 0 |
| Athyrium niponicum | Painted Fern, Japanese Silver Painted Fern | 1 | 0 |
| Athyrium rubripes | | 1 | 0 |
| Athyrium squamigerum | | 1 | 0 |
| Athyrium yokoscense | | 1 | 0 |
| Atropa acuminata | Indian Belladonna | 0 | 3 |
| Atropa bella-donna | Deadly Nightshade, Belladonna | 0 | 3 |
| Aucuba japonica | Spotted Laurel, Japanese laurel, Japanese Gold Dust Tree | 1 | 1 |
| Azara microphylla | | 1 | 0 |
| Backhousia myrtifolia | Grey Myrtle | 0 | 0 |
| Ballota nigra | Black Horehound | 0 | 3 |
| Bambusa multiplex | Hedge Bamboo, Chinese Goddess Bamboo | 2 | 0 |
| Bambusa oldhamii | Ryoku-Chiku, Giant Timber Bamboo, Oldham's Bamboo | 2 | 0 |
| Banksia integrifolia | Coast Banksia | 2 | 0 |
| Banksia marginata | Silver Banksia | 2 | 0 |
| Barbarea verna | Land Cress, Early yellowrocket | 3 | 0 |
| Barbarea vulgaris | Yellow Rocket, Garden yellowrocket | 3 | 1 |
| Begonia grandis evansiana | Hardy Begonia | 0 | 2 |
| Begonia palmata | | 1 | 1 |
| Begonia picta | | 2 | 2 |
| Belamcanda chinensis | Leopard Lily, Blackberry lily, Leopard Flower | 1 | 3 |
| Berberidopsis corallina | Coral Plant | 0 | 0 |
| Berberis aggregata | Salmon Barberry | 3 | 2 |
| Berberis amurensis | | 2 | 2 |
| Berberis angulosa | Large-Flowered Barberry | 3 | 2 |
| Berberis aristata | Chitra, Indian Barberry or Tree Turmeric | 4 | 3 |
| Berberis asiatica | Chutro, Rasanjan (Nep); marpyashi (Newa); Daruharidra, Darbi (Sans) | 4 | 3 |
| Berberis buxifolia | Magellan Barberry | 4 | 2 |
| Berberis calliantha | | 2 | 2 |
| Berberis canadensis | Allegheny Barberry, American barberry | 3 | 2 |
| Berberis capillaris | | 2 | 2 |
| Berberis chengii | | 1 | 2 |
| Berberis chinensis | | 1 | 2 |
| Berberis chitria | | 2 | 2 |
| Berberis concinna | | 2 | 2 |
| Berberis cooperi | | 3 | 2 |
| Berberis darwinii | Darwin's Barberry, Darwin's berberis | 4 | 2 |
| Berberis empetrifolia | | 2 | 2 |
| Berberis everstiana | | 2 | 2 |
| Berberis fendleri | Colorado Barberry | 2 | 2 |
| Berberis flexuosa | | 1 | 2 |
| Berberis gagnepainii | | 2 | 2 |
| Berberis georgii | Barberry | 3 | 2 |
| Berberis heterophylla | | 1 | 2 |
| Berberis jaeschkeana | | 1 | 2 |
| Berberis koreana | Korean Barberry, Barberry | 1 | 2 |
| Berberis lycium | | 3 | 3 |
| Berberis parisepala | | 2 | 2 |
| Berberis rariflora | | 2 | 2 |
| Berberis rubrostilla | | 3 | 2 |
| Berberis ruscifolia | | 2 | 2 |
| Berberis sherriffii | | 1 | 2 |
| Berberis sibirica | | 2 | 2 |
| Berberis sieboldii | | 1 | 2 |
| Berberis sikkimensis | | 2 | 2 |
| Berberis soulieana | | 1 | 2 |
| Berberis thunbergii | Japanese Barberry | 2 | 2 |
| Berberis tomentosa | | 1 | 2 |
| Berberis ulcina | | 2 | 2 |
| Berberis verruculosa | | 2 | 2 |
| Berberis vulgaris | European Barberry, Common barberry | 3 | 3 |
| Berberis wallichiana | | 2 | 2 |
| Berberis wilsoniae | Wilson barberry | 3 | 2 |
| Berberis x carminea | | 3 | 2 |
| Berberis x lologensis | | 3 | 2 |
| Berberis x stenophylla | | 3 | 2 |
| Berchemia flavescens | | 2 | 0 |
| Berchemia lineata | | 2 | 1 |
| Berchemia racemosa | | 2 | 0 |
| Bergenia ciliata | | 1 | 2 |
| Bergenia cordifolia | Siberian-tea, Pigsqueak, Heartleaf Bergenia | 0 | 0 |
| Bergenia crassifolia | Siberian Tea | 2 | 0 |
| Bergenia purpurascens | | 0 | 2 |
| Betula alleghaniensis | Yellow Birch, Swamp Birch | 3 | 2 |
| Betula glandulosa | Scrub Birch | 2 | 1 |
| Betula utilis | Indian Paper Birch, Whitebarked Himilayan Birch, Jacquemontii Birch | 0 | 2 |
| Billardiera cymosa | Sweet Appleberry | 2 | 0 |
| Billardiera longiflora | Appleberry | 2 | 0 |
| Billardiera scandens | Common Appleberry | 2 | 0 |
| Blechnum spicant | Hard Fern, Deer fern | 2 | 1 |
| Bletilla striata | Hyacinth Orchid, Urn orchid, Hyacinth Bletilla, Hardy Orchid, Chinese Ground Orchid | 0 | 3 |
| 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 |
| Bomarea acutifolia | Yatzi | 2 | 0 |
| Bomarea edulis | | 3 | 0 |
| Bomarea salsilla | | 2 | 0 |
| Borinda emeryi | | 0 | 0 |
| Borinda grossa | | 0 | 0 |
| Boronia pinnata | Pinnate Boronia | 0 | 0 |
| Botrychium australe | Parsley Fern | 1 | 0 |
| Botrychium ternatum | | 2 | 2 |
| Botrychium virginianum | Rattlesnake Fern | 1 | 2 |
| Brachychiton populneus | Kurrajong, Bottletree, Kurrajong | 3 | 0 |
| Brachyglottis repanda | Bushman's Toilet Paper | 1 | 1 |
| Bromus breviaristatus | Mountain Brome | 1 | 0 |
| Bromus carinatus | Californian Brome | 1 | 0 |
| Bromus marginatus | Mountain Brome | 1 | 0 |
| Bromus ramosus | Hairy Brome | 0 | 1 |
| Broussonetia kazinoki | Kozo | 3 | 1 |
| Broussonetia papyrifera | Paper Mulberry | 4 | 2 |
| Bryonia alba | White Bryony | 1 | 2 |
| Bryonia dioica | Red Bryony, Cretan bryony | 1 | 2 |
| Buddleia asiatica | Bai Bei Feng | 1 | 1 |
| Buddleia davidii | Butterfly Bush, Summer Lilac, Butterflybush | 0 | 0 |
| Buddleia globosa | Orange Ball Tree | 0 | 1 |
| Buddleia officinalis | Mi Meng Hua | 0 | 2 |
| Buddleia paniculata | | 0 | 1 |
| Bulbophyllum inconspicuum | | 0 | 1 |
| Bunias orientalis | Turkish Rocket, Turkish wartycabbage | 4 | 0 |
| Bupleurum longiradiatum | | 1 | 2 |
| Buxus balearica | | 0 | 0 |
| Buxus harlandii | Japanese Box | 0 | 0 |
| Buxus microphylla | Littleleaf boxwood , Littleleaf Boxwood | 0 | 0 |
| Buxus sempervirens | Box, Common box, American Boxwood | 1 | 2 |
| Buxus wallichiana | | 0 | 1 |
| Cacalia atriplicifolia | Pale indian plantain | 2 | 1 |
| Cacalia auriculata | | 1 | 0 |
| Cacalia delphiniifolia | | 1 | 0 |
| Cacalia farfarifolia | | 1 | 0 |
| Cacalia firma | | 1 | 0 |
| Cacalia hastata orientalis | | 1 | 0 |
| Cacalia hastata tanakae | | 1 | 0 |
| Cacalia kiusiana | | 1 | 0 |
| Cacalia nikomontana | | 1 | 0 |
| Cacalia peltifolia | | 1 | 0 |
| Cacalia pseudo-taimingasa | | 1 | 0 |
| Caesalpinia decapetala | Mysore Thorn, Shoofly | 0 | 2 |
| Calamintha grandiflora | Large-Flowered Calamint | 2 | 2 |
| Calamintha sylvatica | Calamint, Woodland calamint | 3 | 2 |
| Callicarpa americana | American Beautyberry, Beautyberry, French Mulberry, American Beautyberry | 2 | 2 |
| Callicarpa japonica | Beautyberry, Japanese callicarpa, Japanese Beautyberry | 1 | 0 |
| Callicarpa macrophylla | | 1 | 2 |
| Callicarpa mollis | | 1 | 0 |
| Callicarpa pedunculata | | 0 | 2 |
| Callicoma serratifolia | Black Wattle | 0 | 0 |
| Callitris columellaris | White Cypress-Pine | 0 | 0 |
| Callitris endlicheri | Red Cypress-Pine | 0 | 1 |
| Calluna vulgaris | Heather, Scotch Heather | 2 | 2 |
| Calycanthus floridus | Carolina Allspice, Eastern sweetshrub, Strawberry Bush, Sweetshrub, Carolina Allspice | 3 | 2 |
| Calycanthus floridus glaucus | Eastern Sweetshrub | 2 | 1 |
| Calycanthus occidentalis | Californian Allspice, Western sweetshrub | 3 | 1 |
| 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 |
| Camellia biflora | | 2 | 0 |
| Camellia chekiangoleosa | Camellia | 2 | 0 |
| Camellia gracilis | Camellia | 2 | 0 |
| Camellia japonica | Camellia, Common Camellia, Japanese Camellia | 3 | 2 |
| Camellia kissi | | 2 | 2 |
| Camellia oleifera | Tea-Oil Plant, Tea Oil Camellia | 2 | 2 |
| Camellia pitardii | | 2 | 0 |
| Camellia polyodonta | | 2 | 0 |
| Camellia reticulata | To-tsubaki | 3 | 0 |
| Camellia sasanqua | Camellia, Sasanqua camellia | 3 | 1 |
| Camellia semiserrata | | 2 | 0 |
| Camellia sinensis | Tea Plant, Assam tea, Tea Tree Camellia | 4 | 4 |
| Camellia yunnanensis | | 2 | 0 |
| Campanula alliariifolia | Cornish Bellflower | 3 | 0 |
| Campanula carpatica | Tussock Bellflower, Carpathian Bellflower, Carpathian Harebell | 3 | 0 |
| Campanula carpatica turbinata | | 3 | 0 |
| Campanula garganica | Adriatic Bellflower | 3 | 0 |
| Campanula lactiflora | Milky Bellflower | 3 | 0 |
| Campanula latifolia | Large Campanula, Giant bellflower | 3 | 1 |
| Campanula latiloba | | 3 | 0 |
| Campanula persicifolia | Harebell, Peachleaf bellflower | 4 | 0 |
| Campanula portenschlagiana | Adria Bellflower | 3 | 0 |
| Campanula poscharskyana | Trailing Bellflower | 4 | 0 |
| Campanula pyramidalis | Chimney Bellflower | 3 | 0 |
| Campanula rapunculoides | Creeping Bellflower, Rampion bellflower | 3 | 1 |
| Campanula takesimana | Korean Bellflower | 4 | 0 |
| Campsis radicans | Trumpet Vine, Trumpet creeper | 0 | 1 |
| Cardamine bulbifera | Coral Root, Coralroot bittercress | 2 | 0 |
| Cardamine bulbosa | Bulbous Bittercress | 2 | 0 |
| Cardamine debilis | Roadside bittercress | 2 | 0 |
| Cardamine flexuosa | Wavy Bittercress,Woodland bittercress | 2 | 0 |
| Cardamine heptaphylla | | 2 | 0 |
| Cardamine impatiens | Narrowleaf bittercress | 2 | 1 |
| Cardamine kitaibelii | | 2 | 0 |
| Cardamine komarovii | | 2 | 0 |
| Cardamine macrophylla | | 2 | 0 |
| Cardamine nasturtioides | | 2 | 0 |
| Cardamine pentaphyllos | | 2 | 0 |
| Cardamine pratensis | Cuckoo Flower | 3 | 2 |
| Cardamine raphanifolia | | 1 | 0 |
| Cardamine trifolia | | 1 | 0 |
| Cardamine violacea | | 2 | 0 |
| Cardamine yezoensis | | 2 | 0 |
| Cardiocrinum cordatum | | 2 | 0 |
| Cardiocrinum giganteum | | 0 | 1 |
| Cardiospermum halicacabum | Heart Seed, Balloon vine | 1 | 2 |
| Carex brizoides | | 1 | 0 |
| Carex buxbaumii | Buxbaum's sedge | 1 | 0 |
| Carex hirta | Hammer sedge | 1 | 1 |
| Carex paniculata | | 1 | 0 |
| Carpesium abrotanoides | | 2 | 2 |
| Carpesium divaricatum | | 1 | 2 |
| Carpesium glossophyllum | | 1 | 0 |
| Carpesium triste | | 1 | 0 |
| Cassythia glabella | Devil's Twine | 0 | 1 |
| Castanea pumila | Chinquapin, Ozark chinkapin | 4 | 2 |
| Castanea pumila ashei | Chinquapin | 4 | 1 |
| Castanea x neglecta | Chinknut | 3 | 0 |
| Caulophyllum robustum | Papoose Root | 2 | 2 |
| Caulophyllum thalictroides | Papoose Root, Blue cohosh | 1 | 3 |
| Cautleya spicata | | 2 | 1 |
| Ceanothus integerrimus | Deer Brush | 2 | 1 |
| Ceanothus ovatus | Smaller Red-Root | 2 | 1 |
| Ceanothus prostratus | Squaw Carpet, Prostrate ceanothus | 0 | 0 |
| Cedronella canariensis | Balm Of Gilead, Herb of gilead | 2 | 0 |
| Celastrus angulatus | | 0 | 1 |
| Celastrus dependens | | 1 | 2 |
| Celastrus flagellaris | | 1 | 1 |
| Celastrus orbiculatus | Oriental Bittersweet | 1 | 2 |
| Celastrus scandens | Climbing Bittersweet, American bittersweet | 2 | 2 |
| Centaurium erythraea | Centaury - Feverwort, European centaury | 1 | 3 |
| Cephalanthus occidentalis | Button Bush, Common buttonbush, Button Willow, Honey Bells, Buttonbush | 0 | 2 |
| Cephalotaxus fortunei | Chinese Plum Yew | 5 | 1 |
| Cephalotaxus harringtonia | Japanese Plum Yew | 5 | 0 |
| Cephalotaxus harringtonia drupacea | Japanese Plum Yew | 5 | 0 |
| Cephalotaxus harringtonia koreana | Korean Plum Yew | 5 | 0 |
| Cephalotaxus harringtonia nana | Japanese Plum Yew | 5 | 0 |
| Cephalotaxus lanceolata | Yunnan Plum Yew | 4 | 0 |
| Cephalotaxus oliveri | | 3 | 0 |
| Cephalotaxus sinensis | Chinese Plum Yew | 4 | 1 |
| Cephalotaxus wilsoniana | | 4 | 0 |
| Cerastium fontanum | Chickweed, Common mouse-ear chickweed, Big chickweed | 2 | 0 |
| Cercis canadensis | Redbud, Eastern redbud, Mexican redbud,Texas redbud | 3 | 2 |
| Cercis occidentalis | Western Redbud, California Redbud | 3 | 0 |
| Cercis siliquastrum | Judas Tree, Redbud | 4 | 0 |
| Cetraria islandica | Iceland Moss, Island cetraria lichen, Oriental cetraria lichen | 3 | 3 |
| Chaenomeles cathayensis | Chinese Quince | 4 | 2 |
| Chaenomeles japonica | Dwarf Quince, Maule's quince, Japanese Flowering Quince | 3 | 0 |
| Chaenomeles speciosa | Japanese Quince, Flowering quince | 3 | 2 |
| Chaenomeles x superba | Dwarf Quince, Flowering Quince | 3 | 0 |
| Chaerophyllum villosum | | 1 | 0 |
| Chamaedaphne calyculata | Leather Leaf | 1 | 1 |
| Chamaelirium luteum | Blazing Star - Unicorn Root - Devil's Bit, Fairywand | 0 | 3 |
| Chelidonium majus | Greater Celandine, Swallow Wort, Greater Celandine | 1 | 3 |
| Chelone glabra | Balmony, White turtlehead | 0 | 3 |
| Chenopodium bonus-henricus | Good King Henry | 4 | 2 |
| Chilopsis linearis | Desert Willow | 1 | 1 |
| Chimaphila maculata | Spotted Wintergreen, Striped prince's pine, Pipsissewa | 1 | 3 |
| Chimaphila umbellata | Pipsissewa | 2 | 3 |
| Chimonanthus praecox | Winter Sweet | 2 | 1 |
| Chimonobambusa marmorea | Kan-Chiku | 1 | 0 |
| Chimonobambusa pachystachys | Thorny Bamboo | 1 | 0 |
| Chimonobambusa purpurea | | 1 | 0 |
| Chimonobambusa quadrangularis | Square Bamboo | 2 | 0 |
| Chimonobambusa szechuanensis | | 1 | 0 |
| Chionanthus virginicus | Fringe Tree, White fringetree, Old Man's Beard, Fringe Tree | 1 | 3 |
| Chionographis japonica | | 1 | 0 |
| Chloranthus japonicus | | 0 | 2 |
| Choisya ternata | Mexican Orange Flower | 0 | 0 |
| Chrysolepis sempervirens | Dwarf Golden Chinquapin, Bush chinquapin | 2 | 0 |
| Chrysosplenium alternifolium | Golden Saxifrage, Alternate-leaf golden saxifrage, Iowa golden saxifrage | 2 | 0 |
| Chrysosplenium oppositifolium | Golden Saxifrage | 2 | 0 |
| Chusquea culeou | Culeu | 2 | 0 |
| Chusquea quila | Argentinian quila | 2 | 0 |
| Cibotium barometz | Scythian Lamb | 1 | 1 |
| Cimicifuga dahurica | Xing An Sheng Ma | 1 | 3 |
| Cimicifuga foetida | Foetid Bugbane | 1 | 3 |
| Cimicifuga heracleifolia | Komarov's Bugbane | 0 | 2 |
| Cimicifuga simplex | | 1 | 0 |
| Cinna latifolia | Sweet Reed Grass, Drooping woodreed | 1 | 0 |
| Circaea lutetiana | Enchanter's Nightshade, Broadleaf enchanter's nightshade | 0 | 1 |
| Cirsium brevistylum | Indian Thistle, Clustered thistle | 3 | 0 |
| Cirsium edule | Edible Thistle | 3 | 0 |
| Cirsium eriophorum | Wooly Thistle | 2 | 0 |
| Cirsium oleraceum | Cabbage Thistle | 2 | 0 |
| Cirsium palustre | Marsh Thistle | 2 | 0 |
| Cirsium verutum | | 1 | 1 |
| Cirsium virginianum | Virginia thistle | 1 | 0 |
| Cirsium yezoense | | 1 | 0 |
| Claytonia caroliniana | Broad-Leaved Spring Beauty, Carolina springbeauty | 3 | 0 |
| Claytonia exigua | Pale Spring Beauty, Serpentine springbeauty | 2 | 0 |
| Claytonia perfoliata | Miner's Lettuce | 4 | 1 |
| Claytonia sibirica | Pink Purslane, Siberian springbeauty | 4 | 1 |
| Claytonia virginica | Spring Beauty, Virginia springbeauty, Hammond's claytonia, Yellow Virginia springbeauty | 3 | 1 |
| Clematis alternata | | 0 | 1 |
| Clematis apiifolia | | 1 | 2 |
| Clematis barbellata | | 0 | 2 |
| Clematis brachyura | | 1 | 0 |
| Clematis buchananiana | | 1 | 2 |
| Clematis chinensis | Wei Ling Xian | 1 | 2 |
| Clematis columbiana | Rock Clematis | 0 | 1 |
| Clematis connata | | 0 | 1 |
| Clematis douglasii | Hairy Clematis | 0 | 1 |
| Clematis flammula | Fragrant Virgin's Bower, Fragrant clematis | 1 | 0 |
| Clematis ianthina | | 1 | 0 |
| Clematis ligusticifolia | White Clematis, Western white clematis, California clematis, | 0 | 2 |
| Clematis mandschurica | | 0 | 2 |
| Clematis microphylla | Headachevine | 0 | 1 |
| Clematis orientalis | Oriental virginsbower | 0 | 1 |
| Clematis patens | | 1 | 0 |
| Clematis pierotii | | 1 | 0 |
| Clematis recta | Ground virginsbower | 1 | 1 |
| Clematis serratifolia | | 1 | 0 |
| Clematis terniflora | Sennin-So, Sweet autumn virginsbower, Sweet Autumn Clematis, Fall Clematis | 1 | 1 |
| Clematis tibetana | | 0 | 2 |
| Clematis trichotoma | | 1 | 0 |
| Clematis vitalba | Traveller's Joy, Evergreen clematis | 1 | 2 |
| Clerodendrum bungei | Glory Flower, Rose glorybower, Cashmere Bouquet, Mexican Hydrangea, Glory Bower | 0 | 1 |
| Clerodendrum cyrtophyllum | | 1 | 1 |
| Clerodendrum japonicum | Japanese glorybower | 1 | 1 |
| Clerodendrum kwangtungense | | 1 | 0 |
| Clerodendrum trichotomum | Chou Wu Tong, Harlequin glorybower, Ferruginous clerodendrum, Harlequin Glory Bower | 1 | 3 |
| Clethra alnifolia | Sweet Pepper Bush, Coastal sweetpepperbush, Summer Sweet | 0 | 0 |
| Clethra barbinervis | | 1 | 0 |
| Clinopodium chinense | | 2 | 0 |
| Clinopodium umbrosum | | 0 | 1 |
| Clintonia borealis | Bluebeard | 2 | 1 |
| Clintonia udensis | | 2 | 0 |
| Clintonia umbellulata | Speckled Wood Lily, White clintonia | 2 | 0 |
| Cneorum tricoccon | Spurge Olive | 0 | 1 |
| Cocculus orbiculatus | Queen coralbead | 1 | 2 |
| Codonopsis lanceolata | Todok | 2 | 2 |
| Codonopsis nervosa | | 0 | 2 |
| Codonopsis ovata | | 2 | 1 |
| Codonopsis pilosula | Dang Shen, Bellflower | 2 | 3 |
| Codonopsis tangshen | Chuan Dang | 0 | 3 |
| Codonopsis ussuriensis | | 2 | 0 |
| Colchicum autumnale | Autumn Crocus, Meadow Saffron, | 0 | 3 |
| Colletia armata | | 0 | 0 |
| Colletia ferox | | 0 | 1 |
| Colletia paradoxa | | 0 | 0 |
| Collinsonia canadensis | Stone Root - Horse Balm, Richweed | 0 | 3 |
| Colutea arborescens | Bladder Senna | 0 | 2 |
| Colutea istria | Bladder-senna | 0 | 0 |
| Colutea x media | | 0 | 0 |
| Commelina erecta | Slender Day-Flower, Whitemouth dayflower | 2 | 0 |
| Commelina erecta angustifolia | Whitemouth Dayflower | 2 | 1 |
| Commelina virginica | Virginia Day-Flower | 2 | 0 |
| Comptonia peregrina | Sweet Fern | 3 | 3 |
| Comptonia peregrina asplenifolia | Sweet Fern | 3 | 3 |
| Coniogramme japonica | Bamboo Fern | 0 | 1 |
| Conium maculatum | Hemlock, Poison hemlock | 1 | 2 |
| Conopodium majus | Pignut | 3 | 0 |
| Convallaria keiskei | Lily Of The Valley | 1 | 0 |
| Convallaria majalis | Lily Of The Valley, European lily of the valley | 1 | 3 |
| Convolvulus erubescens | Australian Bindweed, Pinkflower bindweed | 0 | 1 |
| Convolvulus scammonia | Scammony | 0 | 2 |
| Coprosma acerosa | Sand Coprosma | 2 | 0 |
| Coprosma areolata | | 1 | 0 |
| Coprosma atropurpurea | | 1 | 0 |
| Coprosma billardieri | Native Currant | 1 | 0 |
| Coprosma brunnea | | 2 | 0 |
| Coprosma foetidissima | | 1 | 0 |
| Coprosma grandifolia | | 1 | 1 |
| Coprosma hirtella | Rough Coprosma | 1 | 0 |
| Coprosma lucida | | 2 | 0 |
| Coprosma moorei | | 1 | 0 |
| Coprosma nitida | | 2 | 0 |
| Coprosma petriei | | 1 | 0 |
| Coprosma propinqua | | 1 | 0 |
| Coprosma pumila | | 1 | 0 |
| Coprosma repens | Mirror Plant, Creeping mirrorplant | 1 | 0 |
| Coprosma rhamnoides | | 1 | 0 |
| Coprosma robusta | | 1 | 1 |
| Coprosma rotundifolia | | 1 | 0 |
| Coprosma rugosa | | 1 | 0 |
| Coprosma serrulata | | 1 | 0 |
| Coprosma virescens | | 1 | 0 |
| Coptis brachypetala | | 0 | 0 |
| Coptis chinensis | Huang Lian | 0 | 3 |
| Coptis deltoidea | | 0 | 2 |
| Coptis japonica | | 0 | 2 |
| Coptis occidentalis | Idaho goldthread | 0 | 0 |
| Coptis teeta | Yun Lian | 1 | 2 |
| Coptis trifolia | Goldthread, Threeleaf goldthread | 2 | 2 |
| Corallorhiza maculata | Summer Coralroot | 0 | 1 |
| Corallorhiza odontorhiza | Autumn Coralroot | 0 | 2 |
| Cordyline australis | Cabbage Tree | 3 | 0 |
| Cordyline indivisa | Cabbage Tree | 3 | 0 |
| Corema conradii | Poverty Grass, Broom crowberry | 1 | 0 |
| Coreopsis auriculata | Tickseed, Lobed tickseed,Mouse-eared Coreopsis, Eared Coreopsis | 0 | 0 |
| Coriaria myrtifolia | Redoul | 0 | 0 |
| Coriaria napalensis | Masuri Berry | 2 | 1 |
| Coriaria ruscifolia | | 2 | 0 |
| Coriaria sarmentosa | Tuhu | 2 | 0 |
| Coriaria sinica | | 2 | 1 |
| Coriaria terminalis | | 2 | 0 |
| Cornus alternifolia | Green Osier, Alternateleaf dogwood, Alternate Leaf Dogwood, Golden Shadows Pagoda Dogwood, Green Osi | 0 | 2 |
| Cornus amomum | Silky Dogwood | 1 | 2 |
| Cornus asperifolia drummondii | Roughleaf Dogwood | 0 | 0 |
| Cornus australis | | 1 | 0 |
| Cornus canadensis | Creeping Dogwood, Bunchberry dogwood, Bunchberry | 4 | 2 |
| Cornus capitata | Bentham's Cornel | 4 | 1 |
| Cornus florida | Flowering Dogwood | 2 | 2 |
| Cornus hemsleyi | | 0 | 0 |
| Cornus hongkongensis | | 1 | 0 |
| Cornus iberica | | 2 | 0 |
| Cornus kousa | Japanese Dogwood, Kousa dogwood, Chinese Dogwood, | 5 | 0 |
| Cornus kousa chinensis | Japanese Dogwood | 5 | 0 |
| Cornus mas | Cornelian Cherry, Cornelian Cherry Dogwood | 4 | 2 |
| Cornus monbeigii | | 1 | 2 |
| Cornus oblonga | Oblong-Petal Dogwood | 0 | 3 |
| Cornus occidentalis | Western Dogwood | 1 | 1 |
| Cornus officinalis | Shan Zhu Yu, Asiatic dogwood, Japanese Cornel Dogwood | 4 | 3 |
| Cornus poliophylla | | 1 | 2 |
| Cornus quinquenervis | | 2 | 0 |
| Cornus rugosa | Round-Leaved Dogwood | 0 | 1 |
| Cornus sanguinea | Dogwood, Bloodtwig dogwood | 2 | 1 |
| Cornus sericea | Red Osier Dogwood, Western dogwood | 2 | 2 |
| Cornus sessilis | Blackfruit dogwood | 2 | 0 |
| Cornus suecica | Dwarf Cornel, Lapland cornel | 2 | 1 |
| Cornus walteri | | 0 | 0 |
| Cornus wilsoniana | | 0 | 0 |
| Cornus x unalaschkensis | Bunchberry | 3 | 0 |
| Corokia x virgata | | 0 | 0 |
| Corydalis ambigua | | 1 | 3 |
| Corydalis aurea | Scrambled Eggs | 0 | 2 |
| Corydalis cava | | 0 | 3 |
| Corydalis edulis | | 1 | 0 |
| Corydalis falconeri | | 0 | 0 |
| Corydalis govaniana | | 0 | 2 |
| Corydalis incisa | Incised fumewort | 1 | 1 |
| Corydalis intermedia | | 0 | 1 |
| Corydalis juncea | | 1 | 0 |
| Corydalis ochotensis | | 1 | 0 |
| Corydalis pallida | | 1 | 0 |
| Corydalis solida | Fumewort, Spring fumewort | 1 | 3 |
| Corydalis ternata | Three-Leaf Corydalis | 0 | 2 |
| Corydalis yanhusuo | Yan Hu Suo | 0 | 3 |
| Corylus americana | American Hazel | 3 | 1 |
| Corylus avellana | Common Hazel, Common filbert, European Filbert, Harry Lauder's Walking Stick, Corkscrew Hazel, Hazel | 5 | 2 |
| Corylus avellana pontica | | 4 | 0 |
| Corylus colurna | Turkish Hazel, Chinese hazelnut, Turkish Filbert, Turkish Hazel | 3 | 1 |
| Corylus cornuta | Beaked Hazel, California hazelnut, Turkish Filbert, Turkish Hazel | 3 | 1 |
| Corylus cornuta californica | California Hazel | 3 | 0 |
| Corylus fargesii | | 2 | 0 |
| Corylus ferox | Himalayan Hazel, Tibetan hazelnut | 2 | 0 |
| Corylus heterophylla | Siberian Filbert | 3 | 1 |
| Corylus jacquemontii | Indian Tree Hazel | 3 | 0 |
| Corylus maxima | Filbert, Giant filbert | 5 | 0 |
| Corylus sieboldiana | Japanese Hazel, Manchurian hazel | 3 | 0 |
| Corylus sieboldiana mandschurica | Hairy hazel, Japanese hazelnut, | 3 | 0 |
| Corylus tibetica | | 2 | 0 |
| Corylus x colurnoides | Trazel | 3 | 0 |
| Corynocarpus laevigatus | New Zealand Laurel, Karaka nut | 2 | 0 |
| Cotinus coggygria | Smoke Tree, European smoketree, Venetian Sumac, Wig Tree, Smoke Tree | 1 | 1 |
| Cotinus obovatus | Chittamwood, American smoketree | 0 | 0 |
| Cotoneaster acuminatus | Acuminate cotoneaster | 0 | 0 |
| Cotoneaster bacillaris | | 0 | 1 |
| Cotoneaster conspicuus | Tibetan Cotoneaster, Cotoneaster | 0 | 0 |
| Cotoneaster coriaceus | | 0 | 0 |
| Cotoneaster divaricatus | Spreading Cotoneaster | 0 | 0 |
| Cotoneaster franchetii | Orange cotoneaster | 1 | 0 |
| Cotoneaster frigidus | | 0 | 1 |
| Cotoneaster glaucophyllus | | 0 | 0 |
| Cotoneaster microphyllus | | 2 | 1 |
| Cotoneaster racemiflorus | Black-Wood, Cotoneaster | 2 | 1 |
| Cotoneaster serotinus | | 0 | 0 |
| Cotoneaster simonsii | Simons' cotoneaster | 0 | 0 |
| Cotoneaster wardii | | 0 | 0 |
| Cotoneaster x watereri | | 0 | 0 |
| Crataegomespilus dardarii | Bronvaux Medlar | 3 | 0 |
| Crataegus altaica | Altai Mountain Thorn | 3 | 2 |
| Crataegus anomala | Arnold hawthorn | 3 | 2 |
| Crataegus arnoldiana | Arnold Hawthorn | 5 | 2 |
| Crataegus atrosanguinea | | 3 | 2 |
| Crataegus azarolus | Azarole | 4 | 2 |
| Crataegus baroussana | Tejocote | 4 | 2 |
| Crataegus caesa | | 4 | 2 |
| Crataegus calpodendron | Pear Hawthorn | 3 | 2 |
| Crataegus champlainensis | Quebec hawthorn | 4 | 2 |
| Crataegus coccinoides | Kansas Hawthorn | 3 | 2 |
| Crataegus columbiana | Columbian Hawthorn | 3 | 2 |
| Crataegus crus-galli | Cockspur Thorn, Cockspur hawthorn, Dwarf Hawthorn | 2 | 2 |
| Crataegus cuneata | Sanzashi, Chinese hawthorn | 3 | 3 |
| Crataegus dilatata | Broadleaf hawthorn | 3 | 2 |
| Crataegus dispessa | Mink hawthorn | 3 | 2 |
| Crataegus douglasii | Black Hawthorn | 4 | 2 |
| Crataegus durobrivensis | Caughuawaga Hawthorn | 4 | 2 |
| Crataegus ellwangeriana | Scarlet Hawthorn | 5 | 2 |
| Crataegus elongata | | 4 | 2 |
| Crataegus festiva | | 5 | 2 |
| Crataegus flabellata | Fanleaf hawthorn | 3 | 2 |
| Crataegus flava | Summer Haw, Yellowleaf hawthorn | 3 | 2 |
| Crataegus gemosa | Haw | 3 | 2 |
| Crataegus holmesiana | Holmes' hawthorn | 4 | 2 |
| Crataegus hupehensis | | 3 | 2 |
| Crataegus intricata | Copenhagen hawthorn | 3 | 2 |
| Crataegus laciniata | | 4 | 2 |
| Crataegus laevigata | Midland Hawthorn, Smooth hawthorn, English Hawthorn | 3 | 5 |
| Crataegus meyeri | | 3 | 2 |
| Crataegus missouriensis | | 5 | 2 |
| Crataegus mollis | Red Haw, Downy hawthorn | 4 | 2 |
| Crataegus monogyna | Hawthorn, Oneseed hawthorn | 3 | 5 |
| Crataegus opaca | Western Mayhaw | 3 | 2 |
| Crataegus pedicellata | Scarlet Haw, Scarlet hawthorn | 5 | 2 |
| Crataegus pinnatifida major | Chinese Haw | 4 | 3 |
| Crataegus pontica | Turkish Haw | 4 | 2 |
| Crataegus submollis | Quebec Hawthorn | 4 | 2 |
| Crataegus succulenta | Fleshy hawthorn | 4 | 2 |
| Crataegus tanacetifolia | Tansy-Leaved Thorn | 5 | 2 |
| Crataegus x grignonensis | | 3 | 2 |
| Crocosmia aurea | Montbretia | 1 | 0 |
| Crocus nudiflorus | | 2 | 3 |
| Crocus serotinus | | 2 | 0 |
| Cruciata laevipes | Crosswort, Smooth bedstraw | 2 | 2 |
| Cryptotaenia canadensis | Honewort, Canadian honewort | 3 | 0 |
| Cryptotaenia japonica | Mitsuba, Japanese honewort | 4 | 1 |
| Cucubalus baccifer | Berry-Bearing Catchfly | 1 | 1 |
| Cuscuta japonica | Japanese Dodder | 1 | 2 |
| Cuscuta megalocarpa | Bigfruit Dodder | 1 | 0 |
| Cuscuta reflexa | Dodder, Giant dodder | 0 | 2 |
| Cyathea dealbata | Tree Fern | 2 | 0 |
| Cyathea medullaris | Black Tree Fern | 2 | 0 |
| Cyathodes colensoi | | 2 | 0 |
| Cyathodes fasciculata | | 2 | 0 |
| Cyathodes fraseri | | 2 | 0 |
| Cyathodes glauca | Cheese Berry | 1 | 0 |
| Cyathodes juniperina | | 2 | 0 |
| Cyathodes parviflora | Pink Mountain Berry | 2 | 0 |
| Cyathodes straminea | | 1 | 0 |
| Cycas circinalis | Sago Palm, Queen sago, Fern Palm, Queen Sago Palm | 2 | 1 |
| Cycas revoluta | Japanese Sago Palm, Sago palm, King Sago Palm | 2 | 2 |
| Cyclamen hederifolium | Cyclamen, Alpine Violet, Persian Violet | 0 | 1 |
| Cyclea hypoglauca | | 0 | 1 |
| Cydonia oblonga | Quince | 4 | 2 |
| Cymbalaria muralis | Kenilworth Ivy | 2 | 1 |
| Cynanchum caudatum | | 1 | 1 |
| Cynanchum japonicum | | 0 | 2 |
| Cynanchum stauntonii | | 0 | 2 |
| Cynoglossum grande | Pacific Hound's Tongue | 1 | 1 |
| Cypripedium acaule | Nerve Root, Moccasin flower, Ladyslipper Orchid, Pink Lady's Slipper | 0 | 3 |
| Cypripedium calceolus parviflorum | Nerve Root | 0 | 3 |
| Cypripedium calceolus pubescens | Nerve Root | 0 | 3 |
| Cyrtomium falcatum | Holly Fern, Japanese netvein hollyfern, Japanese Holly | 0 | 1 |
| Cyrtomium fortunei | Asian netvein hollyfern | 0 | 2 |
| Cystopteris bulbifera | Berry Bladder Fern, Bulblet bladderfern | 1 | 0 |
| Cystopteris fragilis | Brittle Bladder Fern | 1 | 1 |
| Cystopteris montana | Mountain Bladder Fern | 1 | 0 |
| Cytisus scoparius | Broom, Scotch broom, Common Broom | 1 | 3 |
| Dacrycarpus dacrydioides | Kahikatea | 2 | 0 |
| Dactylis glomerata | Cock's Foot, Orchardgrass, Ascherson's orchardgrass | 0 | 1 |
| Dactylorhiza maculata | Spotted Orchid | 2 | 2 |
| Daphne bholua | | 0 | 1 |
| Daphne genkwa | Lilac Daphne | 0 | 3 |
| Daphne gnidium | Flax-Leaved Daphne | 0 | 1 |
| Daphne involucrata | | 0 | 0 |
| Daphne laureola | Spurge Laurel | 0 | 1 |
| Daphne mezereum | Mezereon, Paradise plant, February Daphne | 0 | 2 |
| Daphne odora | Winter Daphne, Fragrant Daphne | 0 | 2 |
| Daphne papyracea | | 0 | 1 |
| Daphne pseudomezereum | | 0 | 0 |
| Daphniphyllum himalense | | 1 | 1 |
| Daphniphyllum macropodum | | 1 | 0 |
| Debregeasia edulis | | 2 | 1 |
| Debregeasia hypoleuca | | 2 | 0 |
| Debregeasia longifolia | Wild Rhea | 1 | 1 |
| Debregeasia wallichiana | | 0 | 0 |
| Decaisnea fargesii | Blue Sausage Fruit | 3 | 0 |
| Decaisnea insignis | | 2 | 0 |
| Decemium appendiculatum | Waterleaf | 1 | 0 |
| Deinanthe bifida | | 1 | 0 |
| Dendrobium nobile | | 0 | 2 |
| Dentaria diphylla | Crinkleroot | 4 | 2 |
| Dentaria laciniata | Cut-Leaved Toothwort | 3 | 0 |
| Dentaria maxima | Large Toothwort | 1 | 1 |
| Deschampsia caespitosa | Tussock Grass, Tufted Hair Grass, Hair Grass | 1 | 0 |
| Desfontainia spinosa | Taique | 0 | 1 |
| Deutzia scabra | Fuzzy pride-of-rochester, Deutzia | 1 | 0 |
| Dianthus superbus | Fringed Pink | 2 | 3 |
| Dicentra canadensis | Squirrel Corn | 1 | 2 |
| Dicentra cucullaria | Dutchman's Breeches | 0 | 2 |
| Dicentra spectabilis | Bleeding Heart, Japanese Bleeding Heart, Common Bleeding Heart | 1 | 0 |
| Dichroa febrifuga | Chinese Quinine, Dichroa | 0 | 3 |
| Dicksonia antarctica | Tree Fern, Australian treefern | 1 | 1 |
| Diervilla lonicera | Bush Honeysuckle, Northern bush honeysuckle | 0 | 2 |
| Digitalis ferruginea | Rusty Foxglove | 0 | 2 |
| Digitalis grandiflora | Large Yellow Foxglove | 0 | 2 |
| Digitalis laevigata | | 0 | 2 |
| Digitalis lanata | Grecian Foxglove | 0 | 4 |
| Digitalis lutea | Yellow Foxglove, Straw foxglove | 0 | 4 |
| Digitalis purpurea | Foxglove, Purple foxglove, Common Foxglove | 0 | 4 |
| Diphylleia cymosa | Umbrella Leaf, American umbrellaleaf | 0 | 2 |
| Diphylleia grayi | | 1 | 0 |
| Diphylleia sinensis | Umbrella Leaf | 0 | 2 |
| Diploterigium glaucum | | 1 | 0 |
| Dipsacus mitis | | 1 | 0 |
| Dirca occidentalis | Leather Wood, Western leatherwood | 0 | 0 |
| Dirca palustris | Leather Wood, Eastern leatherwood | 0 | 2 |
| Disporopsis aspersa | | 0 | 1 |
| Disporopsis longifolia | | 0 | 1 |
| Disporum cantoniense | | 2 | 1 |
| Disporum sessile | Japanese Fairy Bells | 1 | 0 |
| Disporum smilacinum | | 2 | 0 |
| Disporum trachycarpum | Fairybells | 2 | 1 |
| Disporum viridescens | | 1 | 0 |
| Distylium racemosum | Isu Tree | 0 | 0 |
| Dodecatheon hendersonii | Sailor-Caps, Mosquito bills | 1 | 0 |
| Doronicum pardalianches | Great Leopard's Bane | 0 | 1 |
| Doronicum roylei | | 0 | 1 |
| Drepanostachyum falcatum | Ringal | 2 | 0 |
| Drimys lanceolata | Mountain Pepper | 3 | 1 |
| Drimys winteri | Winter's Bark | 3 | 2 |
| Dryopteris barbigera | | 0 | 4 |
| Dryopteris blandfordii | | 0 | 4 |
| Dryopteris carthusiana | Narrow Buckler Fern, Spinulose woodfern | 2 | 4 |
| Dryopteris crassirhizoma | Crown Wood-Fern | 1 | 4 |
| Dryopteris cristata | Crested Wood Fern | 0 | 4 |
| Dryopteris dilatata | Shield Fern | 2 | 4 |
| Dryopteris expansa | Spiny Wood Fern, Spreading woodfern | 2 | 3 |
| Dryopteris filix-mas | Male Fern | 2 | 4 |
| Dryopteris fragrans | Fragrant Woodfern | 1 | 0 |
| Dryopteris marginalis | Marginal Woodfern, Leather Wood Fern | 0 | 4 |
| Dryopteris odontoloma | | 0 | 4 |
| Dryopteris oreades | Mountain Male Fern | 0 | 4 |
| Dryopteris schimperiana | | 0 | 4 |
| Dryopteris sieboldii | | 1 | 0 |
| Duchesnea indica | Mock Strawberry, Indian strawberry | 2 | 2 |
| Edgeworthia chrysantha | Oriental paperbush | 0 | 1 |
| Edgeworthia gardneri | Nepalese Paper Bush | 0 | 0 |
| Edgeworthia papyrifera | Paperbush, Oriental Paperbush | 1 | 0 |
| Ehretia anacua | Anaqua, Knockaway | 2 | 0 |
| Ehretia dicksonii | | 2 | 0 |
| Ehretia ovalifolia | | 2 | 0 |
| Elaeagnus angustifolia | Oleaster, Russian olive | 4 | 2 |
| Elaeagnus commutata | Silverberry | 3 | 2 |
| Elaeagnus cordifolia | | 5 | 2 |
| Elaeagnus formosana | | 2 | 2 |
| Elaeagnus fragrans | | 2 | 2 |
| Elaeagnus glabra | Goat nipple | 4 | 2 |
| Elaeagnus gonyanthes | | 2 | 2 |
| Elaeagnus latifolia | Bastard Oleaster | 3 | 2 |
| Elaeagnus macrophylla | Broad-leaved Oleaster | 5 | 2 |
| Elaeagnus maritima | | 2 | 2 |
| Elaeagnus montana | | 2 | 2 |
| Elaeagnus multiflora | Goumi, Cherry silverberry | 5 | 2 |
| Elaeagnus multiflora ovata | Goumi | 5 | 2 |
| Elaeagnus oldhamii | | 2 | 2 |
| Elaeagnus orientalis | Trebizond Date | 4 | 2 |
| Elaeagnus parvifolia | Autumn olive | 4 | 2 |
| Elaeagnus pungens | Elaeagnus, Thorny olive, Thorny Elaeagnus, Oleaster, Silverberry, Silverthorn, Pungent Elaeagnus | 5 | 2 |
| Elaeagnus pyriformis | | 2 | 2 |
| Elaeagnus thunbergii | | 2 | 2 |
| Elaeagnus umbellata | Autumn Olive | 4 | 2 |
| Elaeagnus x ebbingei | Elaeagnus, Ebbing's Silverberry | 5 | 2 |
| Elaeagnus x reflexa | Turned-leaf Elaeagnus | 3 | 2 |
| Elaeagnus yoshinoi | | 2 | 2 |
| Elaeocarpus cyaneus | Blueberry Ash | 1 | 0 |
| Elaeocarpus dentatus | | 2 | 0 |
| Elaeocarpus hookerianus | | 0 | 0 |
| Elaeocarpus lanceaefolius | | 1 | 0 |
| Elatostema cuneatum | | 1 | 0 |
| Elatostema laetevirens | | 1 | 0 |
| Eleutherococcus chiisanensis | | 2 | 0 |
| Eleutherococcus divaricatus | | 2 | 0 |
| Eleutherococcus gracylistylus | Wu Jia Pi | 1 | 3 |
| Eleutherococcus japonicus | | 1 | 0 |
| Eleutherococcus senticosus | Siberian Ginseng | 2 | 5 |
| Eleutherococcus seoulensis | | 1 | 0 |
| Eleutherococcus sessiliflorus | | 2 | 3 |
| Eleutherococcus sieboldianus | Ukogi, Five Leafed Aralia | 3 | 0 |
| Eleutherococcus spinosus | | 2 | 2 |
| Eleutherococcus trifoliatus | | 1 | 1 |
| Elsholtzia fruticosa | Ji Gu Chai | 1 | 1 |
| Elytrigia repens | Couch Grass, Quackgrass | 2 | 3 |
| Empetrum atropurpureum | Purple Crowberry | 2 | 0 |
| Empetrum eamesii | Rockberry, Purple crowberry | 2 | 0 |
| Empetrum eamesii hermaphroditum | Mountain Crowberry, Rockberry | 2 | 0 |
| Empetrum nigrum | Crowberry, Black crowberry, Black Crowberry | 3 | 2 |
|