| Latin Name | Common Name | Edibility Rating | Medicinal Rating |
| Abelmoschus esculentus | Okra | 4 | 3 |
| Abies alba | Silver Fir, Christmas Tree Fir, European Silver Fir, Silver | 2 | 3 |
| Abies balsamea | Balsam Fir | 3 | 5 |
| Abies fraseri | She Balsam, Fraser fir, Southern Balsam Fir | 1 | 3 |
| Abutilon theophrasti | China Jute, Velvetleaf, Butterprint Buttonweed Jute, China Mallow, Indian Velvet Leaf | 3 | 2 |
| Acaenia anserinifolia | Pirri-Pirri Bur | 1 | 1 |
| Acer saccharum | Sugar Maple, Florida Maple, Hard Maple, Rock Maple | 4 | 2 |
| Achillea erba-rotta moschata | Musk Milfoil | 0 | 2 |
| Achyranthes aspera | Devil's Horsewhip | 2 | 3 |
| Achyranthes bidentata | Niu Xi | 2 | 3 |
| Achyranthes faureri | | 1 | 1 |
| Achyranthes japonica | Japanese Chaff Flower | 0 | 3 |
| Acinos arvensis | Basil Thyme | 2 | 1 |
| Aconitum chasmanthum | | 0 | 1 |
| Aconitum chinense | | 0 | 1 |
| Aconitum ferox | Indian aconite | 0 | 1 |
| Aconitum fischeri | Fischer monkshood | 0 | 1 |
| Aconitum kusnezoffii | Bei Wu Tou | 0 | 1 |
| Aconitum lycoctonum | Wolfsbane | 1 | 1 |
| Aconitum lycoctonum vulparia | Wolfbane | 1 | 1 |
| Aconitum napellus | Aconite, Venus' chariot, Wolfsbane Garden, Monk's Hood Garden | 1 | 2 |
| Aconitum orientale | | 0 | 1 |
| Aconitum uncinatum | Wild Monkshood, Southern blue monkshood | 0 | 1 |
| Aconitum volubile | | 1 | 1 |
| Acorus gramineus | Grass-leaved Sweet Rush, Japanese Sweet Flag, Dwarf Sweet Flag | 3 | 3 |
| Actinidia chinensis | Kiwi | 4 | 2 |
| Actinidia deliciosa | Kiwi Fruit | 5 | 1 |
| Adiantum venustum | Evergreen Maidenhair Fern | 0 | 1 |
| Adonis aestivalis | Pheasant's Eye, Summer pheasant's eye | 0 | 1 |
| Adonis amurensis | | 0 | 1 |
| Adonis vernalis | Pheasant's Eye, Spring pheasant's eye | 0 | 3 |
| Aegopodium podagraria | Ground Elder, Bishop's goutweed, Goutweed, Ground Elder, Bishop's Weed | 3 | 2 |
| Aesculus hippocastanum | Horse Chestnut, European Horsechestnut, Common Horsechestnut | 3 | 4 |
| Afzelia africana | African Mahogany | 2 | 2 |
| Agave americana | Agave, American century plant | 3 | 3 |
| Agave parryi | Century Plant, Parry's agave, Mescal | 3 | 1 |
| Agave utahensis discreta | Century Plant | 3 | 1 |
| Agave utahensis eborispina | Century Plant | 3 | 1 |
| Ageratina altissima | White Snakeroot, Richweed | 0 | 2 |
| Ageratina aromatica | | 1 | 1 |
| Agrimonia eupatoria | Agrimony, Churchsteeples | 2 | 3 |
| Agrostemma githago | Corncockle, Common corncockle | 1 | 1 |
| Ailanthus altissima | Tree Of Heaven | 1 | 3 |
| Ajuga chamaepitys | Ground Pine, Yellow bugle | 0 | 2 |
| Akebia quinata | Akebia, Chocolate vine, Fiveleaf Akebia, Chocolate Vine | 4 | 2 |
| Akebia trifoliata | Akebia, Threeleaf Akebia | 4 | 2 |
| Albizia julibrissin | Mimosa, Silktree, Mimosa Tree, | 2 | 2 |
| Alcea rosea | Hollyhock | 3 | 2 |
| Alchemilla alpina | Alpine Lady's Mantle, Mountain Lady's Mantle | 2 | 3 |
| Alchemilla xanthochlora | Lady's Mantle | 2 | 3 |
| Alchornea cordifolia | Christmas Bush | 2 | 4 |
| Aletris farinosa | Unicorn Root - Colic Root, White colicroot | 1 | 3 |
| Alhagi mannifera | Manna Tree | 2 | 2 |
| Alhagi maurorum | Camel Thorn | 2 | 2 |
| Alisma plantago-aquatica | Great Water Plantain, ZE-XIE, European water plantain, American water plantain, Northern water plan | 1 | 3 |
| 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 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 fistulosum | Welsh Onion | 5 | 2 |
| Allium macrostemon | No-Binu | 3 | 2 |
| Allium porrum | Leek, Garden leek | 4 | 2 |
| Allium sativum | Garlic, Cultivated garlic | 5 | 5 |
| Allium sativum ophioscorodon | Serpent Garlic | 5 | 5 |
| Allium ursinum | Wild Garlic | 5 | 3 |
| Allium victorialis | Alpine Leek, Victory onion | 4 | 2 |
| Allium vineale | Crow Garlic, Wild garlic, Compact onion, False Garlic, Wild, Onion | 3 | 2 |
| Alnus nepalensis | Nepalese Alder | 0 | 1 |
| Alnus serrulata | Smooth Alder, Hazel alder | 0 | 2 |
| Alopecurus aequalis | Shortawn Foxtail, Sonoma shortawn foxtail | 1 | 1 |
| Althaea officinalis | Marsh Mallow, Common marshmallow | 5 | 5 |
| Amaranthus bidentata | | 2 | 1 |
| Amaranthus campestris | | 2 | 1 |
| Ammi visnaga | Visnaga. Khella. Bishop's Weed, Toothpickweed | 1 | 5 |
| Anacardium occidentale | Cashew, Caju | 5 | 3 |
| Anagallis arvensis | Scarlet Pimpernel | 2 | 2 |
| Ananas comosus | Pineapple | 5 | 2 |
| Anchusa azurea | Anchusa, Italian bugloss | 2 | 1 |
| Andrographis paniculata | Green Chireta, Creat, Nilavembu, Kirayat, Chuan Xin Lian, King of Bitters | 1 | 4 |
| Andropogon gerardii | Big Bluestem | 0 | 1 |
| Anemarrhena asphodeloides | Zhi Mu | 0 | 3 |
| Anemopsis californica | Yerba Mansa | 2 | 2 |
| Anethum graveolens | Dill | 4 | 3 |
| Angelica archangelica | Angelica, Norwegian angelica | 3 | 3 |
| Angelica polymorpha | | 2 | 2 |
| Angelica sylvestris | Wild Angelica,Woodland angelica | 3 | 2 |
| Antennaria dioica | Catsfoot, Stoloniferous pussytoes | 0 | 2 |
| Anthemis cotula | Mayweed, Stinking chamomile | 1 | 2 |
| Anthriscus cerefolium | Chervil, Garden chervil | 3 | 2 |
| Aphanes arvensis | Parsley Piert, Field parsley piert | 2 | 3 |
| Apium graveolens | Wild Celery. Ajmod, Ajwain-ka-patta (Indian) | 3 | 3 |
| Apium graveolens dulce | Celery | 4 | 2 |
| Apium graveolens rapaceum | Celeriac | 4 | 2 |
| Apium graveolens secalinum | Leaf Celery | 4 | 2 |
| Apocynum androsaemifolium | Spreading Dogbane | 0 | 2 |
| Apocynum cannabinum | Indian Hemp | 2 | 2 |
| Apocynum venetum | | 0 | 2 |
| Aquilaria crassna | Agar Wood, Agarwood | 0 | 3 |
| Aquilegia canadensis | Wild Columbine, Red columbine, Meeting Houses, Common Columbine | 2 | 2 |
| Aquilegia vulgaris | Columbine, European columbine, Granny's Bonnet, European Crowfoot | 2 | 1 |
| Aralia chinensis | Chinese Angelica Tree, Pumila Spirea, Chinese Astilbe | 2 | 2 |
| Aralia cordata | Udo | 4 | 2 |
| Aralia hispida | Bristly Sarsaparilla | 2 | 1 |
| Aralia nudicaulis | Wild Sarsaparilla | 4 | 3 |
| Arbutus unedo | Strawberry Tree | 4 | 2 |
| Archidendron jiringa | Jengkol, Jiringa | 4 | 2 |
| Arctium lappa | Great Burdock, Gobo | 4 | 5 |
| Arctium minus | Lesser Burdock | 3 | 5 |
| Arctostaphylos glauca | Bigberry Manzanita | 2 | 2 |
| Arctostaphylos tomentosa | Downy Manzanita, Woollyleaf manzanita, Brittleleaf manzanita, Dacite manzanita, Rosy manzanita, San | 3 | 3 |
| Arctostaphylos uva-ursi | Bearberry | 3 | 4 |
| Ardisia crispa | | 1 | 1 |
| Ardisia japonica | Marlberry | 0 | 3 |
| Areca catechu | Betel Palm, Betel Nut Palm | 3 | 3 |
| Arenaria serpyllifolia | Thyme-Leaf Sandwort | 2 | 2 |
| Arisaema serratum | | 2 | 1 |
| Arisaema thunbergii | | 0 | 1 |
| Aristolochia debilis | Ma Dou Ling | 1 | 3 |
| Aristolochia fangchi | Guan Fang Chi | 0 | 2 |
| Aristolochia rotunda | Snakeroot | 0 | 2 |
| Aristolochia serpentaria | Virginia Snakeroot | 0 | 3 |
| Armoracia rusticana | Horseradish, Red Cole | 3 | 3 |
| Artemisia capillaris | Yin Chen Hao | 1 | 3 |
| Artemisia dracunculoides | Russian Tarragon, Tarragon, French Tarragon | 2 | 1 |
| Artemisia dracunculus | Tarragon, French Tarragon | 4 | 2 |
| Artemisia scoparia | Redstem wormwood | 1 | 2 |
| Artemisia vulgaris | Mugwort, Common wormwood, Felon Herb, Chrysanthemum Weed, Wild Wormwood | 2 | 3 |
| Arum maculatum | Cuckoo Pint | 2 | 1 |
| Arundo donax | Giant Reed, Giant Reed Grass | 3 | 2 |
| Asarum canadense | Snake Root, Canadian wildginger, Canada Wild Ginger, Wild Ginger | 3 | 3 |
| Asarum heterotropoides | | 0 | 2 |
| Asarum sieboldii | Wild Ginger | 0 | 2 |
| Asclepias incarnata | Swamp Milkweed, Swamp Butterfly Weed, Marsh Milkweed | 3 | 2 |
| Asclepias quadrifolia | Fourleaf Milkweed | 2 | 2 |
| Asclepias syriaca | Common Milkweed, Silkweed, Milkweed | 3 | 2 |
| Asclepias tuberosa | Pleurisy Root, Butterfly milkweed, Rolfs' milkweed, Indian Paintbrush | 3 | 3 |
| Asimina triloba | Papaw | 4 | 2 |
| Asparagus cochinchinensis | Chinese Asparagus | 3 | 3 |
| Asparagus filicinus | Fern Asparagus | 2 | 1 |
| Asparagus officinalis | Asparagus, Garden asparagus | 4 | 3 |
| Asparagus racemosus | Shatavari | 3 | 5 |
| Asphodelus aestivus | | 3 | 1 |
| Asphodelus fistulosus | Onionweed | 2 | 1 |
| Asplenium adiantum-nigrum | Black Spleenwort | 0 | 2 |
| Asplenium ceterach | Scale Fern | 0 | 2 |
| Asplenium scolopendrium | Hart's Tongue Fern | 0 | 2 |
| Astragalus floridus | Duo Hua Huang Qi | 0 | 2 |
| Astragalus hoantchy | Wu La Te Huang Qi | 1 | 1 |
| Astragalus membranaceus | Huang Qi | 0 | 5 |
| Astragalus mongholicus | Mongolian Astragalus | 0 | 3 |
| Astrantia major | Great Masterwort | 0 | 1 |
| Atherosperma moschatum | Black Sassafras | 2 | 2 |
| 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 |
| Atractylodes macrocephala | Bai Zhu | 0 | 3 |
| Atriplex hortensis | Orach, Garden orache | 4 | 2 |
| Atropa acuminata | Indian Belladonna | 0 | 3 |
| Atropa bella-donna | Deadly Nightshade, Belladonna | 0 | 3 |
| Avena fatua | Wild Oats | 2 | 1 |
| Avena orientalis | Hungarian Oat | 3 | 1 |
| Avena sativa | Oats, Common oat | 3 | 3 |
| Azadirachta indica | Neem | 2 | 4 |
| Baccharis genistelloides | Carqueja | 0 | 4 |
| Bacopa monnieri | Herb of Grace, Brahmi, Smooth Water Hyssop | 3 | 4 |
| Balsamorhiza sagittata | Oregon Sunflower, Arrowleaf balsamroot | 4 | 2 |
| Barbarea vulgaris | Yellow Rocket, Garden yellowrocket | 3 | 1 |
| Basella alba | Malabar Spinach, Indian Spinach, Ceylon spinach, | 4 | 2 |
| Bassia scoparia | Summer Cypress, Burningbush | 2 | 2 |
| Bauhinia forficata | Brazilian Orchid Tree | 0 | 4 |
| Benincasa hispida | Wax Gourd | 3 | 3 |
| Berberis vulgaris | European Barberry, Common barberry | 3 | 3 |
| Betula lenta | Cherry Birch, Sweet birch, Black Birch, Cherry Birch | 3 | 3 |
| Betula nigra | River Birch, Black Birch, Red Birch, Water Birch, River Birch | 3 | 2 |
| Betula pendula | Silver Birch, European white birch, Common Birch, Warty Birch, European White Birch | 3 | 3 |
| Betula pubescens | White Birch, Downy birch | 3 | 3 |
| Bidens tripartita | Burr Marigold, Threelobe beggarticks | 2 | 2 |
| Bixa orellana | Annatto (Lipstick Plant, Urucum, Colorau, Achiote ) | 3 | 3 |
| Blighia sapida | Akee, ackee apple or ayee | 3 | 2 |
| Boehmeria nivea | Ramie, Chinese Grass, Chinese Silk Plant | 2 | 2 |
| Boerhavia diffusa | Tar Vine, Red spiderling | 2 | 4 |
| Bombax ceiba | Red Silk Cotton Tree, Kapok Tree | 2 | 2 |
| Borago officinalis | Borage, Common borage,Cool-tankard, Tailwort | 3 | 3 |
| Borassus flabellifer | Palmyra Palm | 4 | 2 |
| Brassica juncea | Brown Mustard | 4 | 2 |
| Brassica juncea crispifolia | Curled Mustard | 4 | 2 |
| Brassica juncea foliosa | Leaf Mustard | 4 | 2 |
| Brassica juncea integrifolia crispifolia | Curled Mustard | 4 | 2 |
| Brassica juncea integrifolia rugosa | Head Mustard | 4 | 2 |
| Brassica juncea integrifolia strumata | Large Petiole Mustard | 4 | 2 |
| Brassica juncea integrifolia subintegrifolia | Leaf Mustard | 4 | 2 |
| Brassica juncea multiceps | Green In The Snow | 4 | 2 |
| Brassica juncea napiformis | Root Mustard | 4 | 2 |
| Brassica juncea rugosa | Head Mustard | 4 | 2 |
| Brassica juncea strumata | Large Petiole Mustard | 4 | 2 |
| Brassica juncea tsatsai multiceps | Green In The Snow | 4 | 2 |
| Brassica juncea tsatsai tumida | Swollen-Stem Mustard | 4 | 2 |
| Brassica juncea tumida | Swollen-Stem Mustard | 4 | 2 |
| Brassica napus | Colza, Rape | 3 | 2 |
| Brassica napus arvensis | Coleseed | 3 | 2 |
| Brassica napus napobrassica | Swede | 4 | 2 |
| Brassica napus napus | Rape | 3 | 2 |
| Brassica napus pabularia | Rape Kale | 3 | 2 |
| Brassica nigra | Black Mustard | 3 | 3 |
| Brassica oleracea | Wild Cabbage, Broccoli, Tronchuda cabbage, Brussels sprouts, Kohlrabi, Sprouting broccoli | 4 | 2 |
| Broussonetia papyrifera | Paper Mulberry | 4 | 2 |
| Buglossoides arvensis | Field Gromwell, Corn gromwell | 1 | 1 |
| Bursera simaruba | Gum Tree, Gumbo Limbo | 2 | 2 |
| Cajanus cajan | Pigeon Pea, Puerto Rico Bean, Gandul, Dhal, Congo Pea | 4 | 2 |
| Callicarpa americana | American Beautyberry, Beautyberry, French Mulberry, American Beautyberry | 2 | 2 |
| Calluna vulgaris | Heather, Scotch Heather | 2 | 2 |
| Calotropis procera | Auricula Tree, Dead Sea Apple, Sodom Apple | 1 | 3 |
| Caltha palustris | Marsh Marigold, Yellow marsh marigold | 2 | 2 |
| Calycanthus floridus | Carolina Allspice, Eastern sweetshrub, Strawberry Bush, Sweetshrub, Carolina Allspice | 3 | 2 |
| Calycanthus floridus glaucus | Eastern Sweetshrub | 2 | 1 |
| Calystegia hederacea | Japanese false bindweed | 2 | 1 |
| Calystegia pubescens | Japanese Bindweed | 1 | 1 |
| Calystegia sepium | Hedge Bindweed, Hedge false bindweed, Appalachia false bindweed, Bingham's false bindweed | 2 | 1 |
| Calystegia soldanella | Sea Bindweed, Seashore false bindweed | 1 | 1 |
| Camellia sinensis | Tea Plant, Assam tea, Tea Tree Camellia | 4 | 4 |
| Camellia sinensis assamica | Tea Plant, Assam Tea | 4 | 4 |
| Camphorosma monspeliaca | | 0 | 1 |
| Campsis grandiflora | Trumpet Creeper | 0 | 2 |
| Canarium schweinfurtii | African elemi | 3 | 3 |
| Canna indica | Indian Shot | 4 | 2 |
| Cannabis sativa | Hemp, Marijuana | 4 | 4 |
| Capparis spinosa | Caper,Common Caper, Caper Bush | 2 | 3 |
| Capsella bursa-pastoris | Shepherd's Purse | 3 | 2 |
| Cardamine amara | Large Bittercress | 3 | 1 |
| Cardamine impatiens | Narrowleaf bittercress | 2 | 1 |
| Cardamine pratensis | Cuckoo Flower | 3 | 2 |
| Cardiospermum halicacabum | Heart Seed, Balloon vine | 1 | 2 |
| Carex arenaria | Sand Sedge | 2 | 2 |
| Carex hirta | Hammer sedge | 1 | 1 |
| Carlina acaulis | Stemless Carline Thistle | 2 | 2 |
| Carpesium abrotanoides | | 2 | 2 |
| Carya cordiformis | Bitternut, Bitternut hickory, Swamp Hickory | 3 | 1 |
| Caryocar brasiliense | Pequi, Souari nut | 4 | 2 |
| Cassia sieberiana | West African Laburnum | 1 | 4 |
| Catalpa ovata | Chinese Catalpa | 1 | 1 |
| Catharanthus roseus | Madagascar Periwinkle, Jasmine, Cayenne Old Maid Periwinkle | 1 | 4 |
| Caulophyllum robustum | Papoose Root | 2 | 2 |
| Caulophyllum thalictroides | Papoose Root, Blue cohosh | 1 | 3 |
| Cecropia peltata | Trumpet Tree, Snakewood, Congo pump, Wild pawpaw, Pop-a-gun | 3 | 3 |
| Cedrus deodara | Deodar, Deodar cedar | 0 | 2 |
| Ceiba pentandra | Kapok Tree, Cotton Tree, Suma'ma | 3 | 3 |
| Celastrus scandens | Climbing Bittersweet, American bittersweet | 2 | 2 |
| Centaurea calcitrapa | Common Star Thistle, Red star-thistle | 1 | 1 |
| Centaurea cyanus | Cornflower, Garden cornflower, Blue Bottle, Cornflower | 2 | 2 |
| Centaurea jacea | Brown Knapweed | 1 | 1 |
| Centaurea montana | Mountain Cornflower, Perennial cornflower, Mountain Bluet | 0 | 2 |
| Centaurea nigra | Black Knapweed, Lesser knapweed | 1 | 2 |
| Centaurea scabiosa | Greater Knapweed | 0 | 2 |
| Centella asiatica | Gotu Kola, Spadeleaf | 2 | 5 |
| Centipeda minima | Spreading Sneeze Weed | 0 | 2 |
| Cephalanthus occidentalis | Button Bush, Common buttonbush, Button Willow, Honey Bells, Buttonbush | 0 | 2 |
| Cercis chinensis | Chinese Redbud | 1 | 2 |
| Chamaecyparis lawsoniana | Lawson Cypress, Port orford cedar, Oregon Cedar, Port Orford Cedar, Lawson's Cypress | 0 | 1 |
| Chamaelirium luteum | Blazing Star - Unicorn Root - Devil's Bit, Fairywand | 0 | 3 |
| Chelidonium majus | Greater Celandine, Swallow Wort, Greater Celandine | 1 | 3 |
| Chimaphila maculata | Spotted Wintergreen, Striped prince's pine, Pipsissewa | 1 | 3 |
| Chimaphila umbellata | Pipsissewa | 2 | 3 |
| Chionanthus virginicus | Fringe Tree, White fringetree, Old Man's Beard, Fringe Tree | 1 | 3 |
| Chlorogalum pomeridianum | Soap Lily, Wavyleaf soap plant | 3 | 2 |
| Chrysophyllum cainito | Star Apple, Caimito | 4 | 2 |
| Chrysopogon zizanioides | Vetiver, Vetiver Root, Khus Khus | 2 | 2 |
| Cicerbita alpina | Blue Sow Thistle | 2 | 1 |
| Cichorium intybus | Chicory, Radicchio, Succory, Witloof | 4 | 3 |
| Cimicifuga dahurica | Xing An Sheng Ma | 1 | 3 |
| Cimicifuga foetida | Foetid Bugbane | 1 | 3 |
| Cirsium arvense | Creeping Thistle, Canada thistle | 2 | 2 |
| Cirsium japonicum | No-Azami, Japanese thistle | 2 | 2 |
| Cirsium ochrocentrum | Yellow Spined Thistle | 2 | 2 |
| Cirsium pallidum | Pale Thistle | 1 | 1 |
| Cirsium spicatum | | 3 | 1 |
| Citrullus lanatus | Water Melon | 4 | 3 |
| Claytonia sibirica | Pink Purslane, Siberian springbeauty | 4 | 1 |
| Clematis chinensis | Wei Ling Xian | 1 | 2 |
| Clematis recta | Ground virginsbower | 1 | 1 |
| Clematis vitalba | Traveller's Joy, Evergreen clematis | 1 | 2 |
| Clerodendrum cyrtophyllum | | 1 | 1 |
| Cnicus benedictus | Blessed Thistle | 2 | 3 |
| Cocculus orbiculatus | Queen coralbead | 1 | 2 |
| Cochlearia officinalis | Scurvy Grass, Spoonwort | 1 | 2 |
| Cocos nucifera | Coconut Palm, Coconut | 5 | 2 |
| Codonopsis javanica | | 0 | 1 |
| Coffea arabica | Coffee Arabica | 3 | 3 |
| Coffea arabica | Coffee Arabica | 3 | 3 |
| Coix lacryma-jobi | Job's Tears | 3 | 3 |
| Cola acuminata | Cola Nut, Kola, Bissy Nut | 3 | 4 |
| Cola nitida | Cola Nut, Kola, Bissy Nuts | 3 | 4 |
| Collinsonia canadensis | Stone Root - Horse Balm, Richweed | 0 | 3 |
| Colutea arborescens | Bladder Senna | 0 | 2 |
| Commelina communis | Day Flower, Asiatic dayflower | 3 | 2 |
| Consolida regalis | Larkspur, Royal knight's-spur | 0 | 3 |
| Convallaria majalis | Lily Of The Valley, European lily of the valley | 1 | 3 |
| Convolvulus arvensis | Field Bindweed | 1 | 2 |
| Conyza canadensis | Canada Fleabane, Canadian horseweed | 1 | 3 |
| Copaifera coriacea | Sapucaia tree | 2 | 4 |
| Copaifera guyanensis | Hoepel, Guyanense Copaiba | 2 | 4 |
| Copaifera langsdorffii | Copaiba, Langsdorf's copaifera | 1 | 4 |
| Copaifera multijuga | Hayne oil, Copaiba, | 1 | 4 |
| Copaifera officinalis | Copaiba Balsam, Medicinal Copaiba | 2 | 4 |
| Copaifera reticulata | Copaiba, Reticulated Copaiba, Copaiba Balsam | 0 | 4 |
| Copernicia prunifera | Brazilian Wax Palm, Carnauba Palm, Carnauba Wax | 3 | 3 |
| Corchorus olitorius | Jew's Mallow, Nalta jute | 4 | 2 |
| Coreopsis verticillata | Whorled tickseed | 1 | 1 |
| Cornus amomum | Silky Dogwood | 1 | 2 |
| Cornus chinensis | | 2 | 3 |
| Cornus oblonga | Oblong-Petal Dogwood | 0 | 3 |
| Cornus officinalis | Shan Zhu Yu, Asiatic dogwood, Japanese Cornel Dogwood | 4 | 3 |
| Coronilla emerus | Scorpion Senna | 0 | 1 |
| Coronilla scorpioides | Annual Scorpion Vetch, Yellow crownvetch | 0 | 1 |
| Corydalis ambigua | | 1 | 3 |
| Corydalis govaniana | | 0 | 2 |
| Corypha utan | Gebang Palm. Corypha palm, Sugar palm | 3 | 2 |
| Costus afer | Spiral Ginger, Ginger lily, White spiral costus. | 2 | 4 |
| Costus afer | Spiral Ginger, Ginger lily, White spiral costus. | 2 | 4 |
| Crataegus laevigata | Midland Hawthorn, Smooth hawthorn, English Hawthorn | 3 | 5 |
| Crataegus monogyna | Hawthorn, Oneseed hawthorn | 3 | 5 |
| Crescentia cujete | Calabash Tree | 3 | 2 |
| Crithmum maritimum | Rock Samphire | 2 | 2 |
| Cucumis melo | Melon, Cantaloupe | 4 | 2 |
| Cucumis sativus | Cucumber, Garden cucumber | 4 | 2 |
| Cucurbita maxima | Winter Squash | 5 | 3 |
| Cullen corylifolium | Bu Gu Zhi | 1 | 4 |
| Curculigo orchioides | Star grass, Golden-eyed grass | 1 | 4 |
| Cycas revoluta | Japanese Sago Palm, Sago palm, King Sago Palm | 2 | 2 |
| Cydonia oblonga | Quince | 4 | 2 |
| Cynanchum amplexicaule | | 1 | 1 |
| Cynanchum ascyrifolium | Cruel Plant | 0 | 2 |
| Cynanchum atratum | Bai Wei | 1 | 2 |
| Cynanchum caudatum | | 1 | 1 |
| Cynara cardunculus | Cardoon | 3 | 5 |
| Cynara scolymus | Globe Artichoke | 3 | 5 |
| Cynodon dactylon | Bermuda Grass | 0 | 3 |
| Cyperus esculentus | Tiger Nut, Yellow nutsedge, Nut Grass | 4 | 2 |
| Cyperus rotundus | Nut Grass | 3 | 3 |
| Cytisus scoparius | Broom, Scotch broom, Common Broom | 1 | 3 |
| Daphne genkwa | Lilac Daphne | 0 | 3 |
| Daphne mezereum | Mezereon, Paradise plant, February Daphne | 0 | 2 |
| Datisca cannabina | Acalbir, Akalbir | 0 | 1 |
| Daucus carota | Wild Carrot, Queen anne's lace, Carrot, Wild Carrot, Queen Anne's Lace | 2 | 3 |
| Daucus carota sativus | Carrot | 5 | 3 |
| Delphinium elatum | Candle larkspur, English Larkspur | 0 | 1 |
| Delphinium semibarbatum | Zalil | 0 | 1 |
| Descurainia pinnata | Tansy Mustard, Western tansymustard, Menzies' tansymustard. | 2 | 1 |
| Descurainia sophia | Flixweed, Herb sophia | 2 | 2 |
| Desmodium elegans | | 0 | 2 |
| Desmodium styracifolium | Guang Jing Qian Cao, Coin-leaf desmodium | 0 | 2 |
| Dianthus chinensis | Chinese Pink, Rainbow pink, Annual Pink, China Pink | 0 | 3 |
| Dianthus superbus | Fringed Pink | 2 | 3 |
| Dicentra canadensis | Squirrel Corn | 1 | 2 |
| Dicentra cucullaria | Dutchman's Breeches | 0 | 2 |
| Dichondra micrantha | Asian ponysfoot | 0 | 2 |
| Dichrostachys cinerea | Marabou Thorn, Sickle Bush | 2 | 2 |
| Dictamnus albus | Burning Bush, Gasplant, White Dittany, | 2 | 3 |
| Dictyosperma album | Hurricane Palm, Princess Palm, Red Palm | 4 | 2 |
| Diervilla lonicera | Bush Honeysuckle, Northern bush honeysuckle | 0 | 2 |
| Digitalis lutea | Yellow Foxglove, Straw foxglove | 0 | 4 |
| Digitalis purpurea | Foxglove, Purple foxglove, Common Foxglove | 0 | 4 |
| Dioscorea bulbifera | Aerial Yam, Air Potato | 4 | 2 |
| Diphylleia cymosa | Umbrella Leaf, American umbrellaleaf | 0 | 2 |
| Dipsacus fullonum | Teasel, Fuller's teasel | 0 | 2 |
| Dipsacus sativus | Fuller's Teasel, Indian teasel | 0 | 2 |
| Dipterocarpus alatus | Apitong, baume de gurjun, gurjun balsam | 0 | 2 |
| Dorema ammoniacum | Ammoniacum | 0 | 3 |
| Draba nemerosa | | 1 | 1 |
| Echium vulgare | Viper's Bugloss, Common viper's bugloss | 1 | 2 |
| Elaeis guineensis | African Oil Palm | 5 | 2 |
| Eleusine indica | Wire Grass, Indian goosegrass, Yard Grass, Goose Grass | 3 | 1 |
| Eleutherococcus gracylistylus | Wu Jia Pi | 1 | 3 |
| Eleutherococcus sessiliflorus | | 2 | 3 |
| Elsholtzia ciliata | Crested latesummer mint | 2 | 2 |
| Elsholtzia splendens | Shiny Elsholtzia | 0 | 2 |
| Elytrigia repens | Couch Grass, Quackgrass | 2 | 3 |
| Embelia ribes | False black pepper, White-flowered Embelia | 3 | 4 |
| Emilia sonchifolia | Cupid's Shaving Brush, Lilac tasselflower | 3 | 2 |
| Empetrum nigrum | Crowberry, Black crowberry, Black Crowberry | 3 | 2 |
| Ephedra americana andina | | 2 | 3 |
| Ephedra distachya | Sea Grape, Jointfir | 2 | 4 |
| Ephedra equisetina | Muzei Ma Huang, Ma huang | 1 | 4 |
| Ephedra gerardiana | Ma Huang, Gerard jointfir | 2 | 4 |
| Ephedra intermedia | Zhong Ma Huang | 1 | 4 |
| Ephedra major | Ma Huang | 1 | 4 |
| Ephedra nevadensis | Mormon Tea, Nevada jointfir | 3 | 3 |
| Ephedra sinica | Ma Huang, Chinese ephedra | 1 | 4 |
| Ephedra torreyana | Mexican Tea, Torrey's jointfir | 2 | 3 |
| Ephedra trifurca | Longleaf Jointfir | 1 | 2 |
| Ephedra viridis | Mormon Tea, Brigham Tea, Long Leaf Ephedra, Mountain Joint Fir, Mormon Tea, Ephedra | 2 | 3 |
| Epigaea repens | Mayflower, Trailing arbutus, Ground Laurel | 2 | 2 |
| Epilobium glabellum | | 1 | 1 |
| Equisetum arvense | Field Horsetail | 2 | 3 |
| Equisetum hyemale | Dutch Rush, Scouringrush horsetail, Horsetail, Scouring Rush, Rough Horsetail | 2 | 2 |
| Equisetum sylvaticum | Wood Horsetail, Woodland horsetail | 1 | 2 |
| Equisetum telmateia | Giant Horsetail | 1 | 1 |
| Erigeron philadelphicus | Philadelphia Fleabane | 0 | 2 |
| Eriobotrya japonica | Loquat, Japanese Loquat | 4 | 3 |
| Eriogonum microthecum | Slender Buckwheat, Alpine slender buckwheat, San Bernardino buckwheat, Johnston's buckwheat, Panamin | 1 | 1 |
| Eruca vesicaria sativa | Rocket | 4 | 1 |
| Eryngium aquaticum | Button Snakeroot, Rattlesnakemaster | 0 | 2 |
| Eryngium campestre | Field Eryngo | 2 | 2 |
| Eryngium maritimum | Sea Holly, Seaside eryngo | 3 | 3 |
| Eryngium planum | Plains eryngo, Blue Cap, Eringoe, Eryngo, Flat Sea Holly | 0 | 1 |
| Eryngium yuccifolium | Button Eryngo | 0 | 2 |
| Erysimum cheiri | Wallflower, Aegean wallflower | 0 | 2 |
| Erythrina herbacea | Cardinal Spear, Redcardinal | 1 | 1 |
| Erythrophleum ivorense | Ordealtree, sasswoodtree | 1 | 3 |
| Erythrophleum suaveolens | Erun, ordealtree, Sasswood Tree | 0 | 3 |
| Eschscholzia californica | Californian Poppy | 1 | 3 |
| Eucommia ulmoides | Gutta-Percha | 1 | 3 |
| Eugenia brasiliensis | Grumichama, Brazilian Plum | 4 | 2 |
| Euodia ruticarpa | Wu Zhu Yu | 0 | 3 |
| Euonymus americanus | Strawberry Bush, Bursting-heart | 0 | 2 |
| Euonymus atropurpureus | Wahoo- Indian Arrow Wood - Burning Bush, Eastern wahoo | 1 | 2 |
| Euonymus japonicus | Japanese Spindle Tree, Box-leaf Euonymus, Evergreen Euonymus, Japanese Euonymus | 1 | 1 |
| Eupatorium cannabinum | Hemp Agrimony | 0 | 3 |
| Eupatorium chinense | | 1 | 2 |
| Eupatorium japonicum | Pei Lan | 1 | 3 |
| Eupatorium lindleyanum | | 0 | 2 |
| Eupatorium maculatum | Joe Pye Weed, Spotted joe pye weed | 0 | 2 |
| Eupatorium purpureum | Gravel Root | 1 | 3 |
| Euphorbia corollata | Wild Spurge, Flowering spurge | 0 | 2 |
| Euphorbia hirta | Asthma Weed, Pill-Bearing Spurge | 1 | 3 |
| Euphorbia humifusa | | 1 | 2 |
| Euphorbia lathyris | Caper Spurge, Moleplant | 1 | 2 |
| Euphorbia pekinensis | Da Ji | 0 | 3 |
| Euphorbia sieboldiana | | 1 | 2 |
| Fabiana imbricata | Pichi | 0 | 2 |
| Ferula conocaula | | 0 | 2 |
| Filipendula ulmaria | Meadowsweet, Queen of the meadow, Double Lady of the Meadow, European Meadowsweet | 3 | 3 |
| Foeniculum vulgare | Fennel, Sweet fennel | 5 | 3 |
| Foeniculum vulgare azoricum | Florence Fennel | 3 | 3 |
| Foeniculum vulgare dulce | Sweet Fennel | 4 | 3 |
| Forsythia suspensa | Lian Qiao, Weeping forsythia | 1 | 3 |
| Fragaria vesca | Wild Strawberry, Woodland strawberry, California strawberry | 3 | 3 |
| Fragaria vesca 'Semperflorens' | Alpine Strawberry | 5 | 3 |
| Fraxinus bungeana | Xiao Ye Qin | 0 | 2 |
| Fraxinus chinensis rhynchophylla | Hua Qu Liu | 0 | 2 |
| Fraxinus excelsior | Ash, European ash, Common Ash | 2 | 2 |
| Fraxinus nigra | Black Ash | 0 | 1 |
| Fraxinus pennsylvanica | Red Ash, Green ash, Water Ash | 1 | 1 |
| Fritillaria imperialis | Crown Imperial, Imperial fritillary, Crown Imperial Fritillary | 2 | 1 |
| Fuchsia magellanica | Fuchsia, Hardy fuchsia | 2 | 1 |
| Fumaria officinalis | Fumitory, Drug fumitory | 1 | 3 |
| Gaillardia pinnatifida | Blanket Flower, Red dome blanketflower | 2 | 1 |
| Galega officinalis | Goat's Rue, Professor-weed | 2 | 3 |
| Galeopsis segetum | Downy Hemp Nettle | 0 | 2 |
| Galium aparine | Goosegrass, Coachweed, Catchweed, Stickywilly | 2 | 3 |
| Galium boreale | Northern Bedstraw | 2 | 2 |
| Galium gracile | | 1 | 2 |
| Galium odoratum | Sweet Woodruff, Sweetscented bedstraw, Bedstraw | 3 | 3 |
| Galium verum | Lady's Bedstraw, Yellow Spring bedstraw, Wirtgen's bedstraw | 3 | 2 |
| Garcinia kola | Bitter Kola | 3 | 4 |
| Gaultheria procumbens | Checkerberry, Eastern teaberry, Teaberry, Creeping Wintergreen | 4 | 3 |
| Genista hispanica | Spanish Gorse | 0 | 1 |
| Genista tinctoria | Dyer's Greenweed, Common Woadwaxen, Broom | 1 | 2 |
| Gentiana crassicaulis | | 0 | 3 |
| Gentiana dahurica | | 0 | 3 |
| Geranium lucidum | Shining geranium | 0 | 1 |
| Geranium maculatum | Spotted Cranesbill, Spotted geranium, Crowfoot, Wild Geranium, Cranesbill | 0 | 3 |
| Geranium ocellatum | | 0 | 1 |
| Geranium robertianum | Herb Robert, Robert geranium | 0 | 2 |
| Geranium rotundifolium | Roundleaf geranium | 0 | 1 |
| Geranium sibiricum | Siberian geranium | 0 | 1 |
| Geum japonicum | | 1 | 2 |
| Glechoma hederacea | Ground Ivy, Field Balm, Gill Over The Ground, Runaway Robin | 2 | 3 |
| Glycyrrhiza glabra | Liquorice, Cultivated licorice | 4 | 4 |
| Gnaphalium luteoalbum | Jersey Cudweed | 1 | 1 |
| Gnaphalium uliginosum | Marsh Cudweed | 0 | 2 |
| Gossypium barbadense | Sea Island Cotton | 3 | 2 |
| Gratiola officinalis | Hedge Hyssop | 0 | 2 |
| Guaiacum sanctum | Lignum Vitae, Guaiacum, Holy Wood | 0 | 2 |
| Guiera senegalensis | Moshi medicine, guier du Senegal | 1 | 4 |
| Gutierrezia sarothrae | Broomweed, Broom snakeweed | 0 | 2 |
| Gymnema sylvestre | Gurmar, Gymnema | 3 | 4 |
| Gypsophila arrostii | Arrost's baby's-breath | 0 | 1 |
| Helianthus annuus | Sunflower, Common sunflower | 5 | 2 |
| Helianthus tuberosus | Jerusalem Artichoke | 4 | 1 |
| Helichrysum arenarium | Everlasting Flower | 0 | 2 |
| Helleborus niger | Black Hellebore | 0 | 2 |
| Helleborus viridis | Green Hellebore | 0 | 2 |
| Hemerocallis altissima | | 4 | 1 |
| Hemerocallis aurantiaca | | 4 | 1 |
| Hemerocallis bulbiferum | | 4 | 1 |
| Hemerocallis citrina | Citron daylily | 4 | 1 |
| Hemerocallis coreana | | 4 | 1 |
| Hemerocallis darrowiana | Day Lily | 4 | 1 |
| Hemerocallis dumortieri | Dumortier's daylily | 4 | 1 |
| Hemerocallis exaltata | | 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 middendorffii | Amur daylily, Middendorf, Daylily | 5 | 1 |
| Hemerocallis middendorffii esculenta | | 5 | 1 |
| Hemerocallis minor | Grassleaf Day Lily, Small daylily | 4 | 1 |
| Hemerocallis multiflora | | 4 | 1 |
| Hemerocallis pedicellata | | 4 | 1 |
| Hemerocallis plicata | | 4 | 1 |
| Hemerocallis thunbergii | | 4 | 1 |
| Hemerocallis yezoensis | | 4 | 1 |
| Hemiptelea davidii | | 2 | 1 |
| Hepatica nobilis | Hepatica, Sharplobe hepatica, Roundlobe hepatica | 0 | 2 |
| Herniaria glabra | Rupture Wort, Smooth rupturewort | 0 | 2 |
| Herniaria hirsuta | Hairy Rupture Wort | 0 | 1 |
| Hesperis matronalis | Sweet Rocket, Dames rocket, | 2 | 1 |
| 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 |
| Hordeum murinum | Mouse Barley, Smooth barley, Hare barley, Wall barley | 2 | 1 |
| Hordeum vulgare | Barley, Common barley | 4 | 3 |
| Houttuynia cordata | Tsi, Chameleon, Rainbow Plant, Chameleon Plant | 4 | 3 |
| Humulus japonicus | Japanese Hop | 2 | 1 |
| Humulus lupulus | Hop, Common hop, European Hop, | 4 | 5 |
| Hyacinthoides nonscripta | Bluebell | 0 | 1 |
| Hydrangea arborescens | Seven Barks, Wild hydrangea, Ashy Hydrangea, Snowhill Hydrangea, Smooth Hydrangea | 1 | 3 |
| Hydrangea macrophylla | French hydrangea , Florist's Hydrangea, Bigleaf Hydrangea | 3 | 2 |
| Hydrastis canadensis | Goldenseal | 0 | 3 |
| Hyoscyamus albus | White Henbane | 0 | 4 |
| Hyoscyamus niger | Henbane, Black henbane | 0 | 4 |
| Hypericum androsaemum | Tutsan, Sweet-amber, St. Johnswort | 0 | 1 |
| Hypericum perforatum | St. John's Wort, Common St. Johnswort | 2 | 4 |
| Hypochoeris glabra | Smooth Cat's Ear | 1 | 1 |
| Hypochoeris scorzonerae | | 1 | 1 |
| Ilex aquifolium | Holly, English holl, Christmas Holly, Common Holly, English Holly | 2 | 2 |
| Ilex opaca | American Holly | 2 | 2 |
| Illicium anisatum | Star Anise, Chinese Anise,Japanese Anise | 1 | 2 |
| Impatiens balsamina | Rose Balsam, Spotted snapweed, Touch-Me-Not, Garden Balsam | 2 | 2 |
| Impatiens noli-tangere | Touch-Me-Not | 3 | 2 |
| Imperata cylindrica | Cogongrass, Japanese Blood Grass | 3 | 3 |
| Indigofera arrecta | Bengal Indigo, Java indigo, Natal indigo | 2 | 2 |
| Inga vera | Ice cream bean, River koko, Guaba, Pois Doux | 2 | 2 |
| Inula britannica | Xuan Fu Hua, British yellowhead | 0 | 3 |
| Inula helenium | Elecampane, Elecampane inula | 3 | 3 |
| Ipomoea nil | Japanese Morning Glory, Whiteedge morning-glory | 0 | 2 |
| Ipomoea pandurata | Wild Potato Vine, Man of the earth | 3 | 2 |
| Ipomoea purpurea | Common Morning Glory, Tall morning-glory | 0 | 2 |
| Iris decora | | 0 | 1 |
| Iris ensata | Japanese Water Iris | 1 | 1 |
| Iris germanica | Purple Flag, German iris, Orris-root, Tall Bearded German Iris, Bearded Iris | 1 | 3 |
| Iris germanica florentina | Orris, Orris-root | 1 | 3 |
| Iris missouriensis | Rocky Mountain Iris | 1 | 2 |
| Iris versicolor | Blue Flag, Harlequin blueflag | 0 | 3 |
| Jatropha curcas | Physic Nut, Barbados Nut | 2 | 3 |
| Jeffersonia diphylla | Twinleaf, Rheumatism Root | 0 | 2 |
| Juglans ailanthifolia | Japanese Walnut | 3 | 1 |
| Juglans ailanthifolia cordiformis | Heartseed Walnut | 4 | 1 |
| Juglans regia | Walnut, English walnut, Persian Walnut, | 4 | 3 |
| Juncus effusus | Soft Rush, Common rush, Lamp rush, Pacific rush | 1 | 2 |
| Juniperus communis | Juniper, Common juniper | 3 | 3 |
| Juniperus communis nana | Juniper | 3 | 3 |
| Juniperus monosperma | One-Seed Juniper | 3 | 2 |
| Juniperus occidentalis | Western Juniper | 3 | 2 |
| Juniperus osteosperma | Desert Juniper, Utah juniper | 2 | 2 |
| Juniperus rigida | Temple Juniper, Needle Juniper | 2 | 1 |
| Juniperus sabina | Savine, Tam Juniper | 0 | 2 |
| Juniperus scopulorum | Rocky Mountain Juniper, Weeping Rocky Mountian Juniper, Colorado Red Cedar | 3 | 2 |
| Juniperus silicicola | Southern Redcedar, Juniper, Southern Red Cedar | 2 | 2 |
| Juniperus virginiana | Pencil Cedar, Eastern redcedar, Southern redcedar, Silver Cedar, Burk Eastern Red Cedar, Silver East | 2 | 2 |
| Jussieva repens | | 0 | 1 |
| Justicia gendarussa | | 0 | 2 |
| Justicia procumbens | | 2 | 2 |
| Knautia arvensis | Field Scabious, Field scabiosa | 0 | 2 |
| Kummerowia stipulacea | Korean Lespedeza, Korean clover | 0 | 1 |
| Kummerowia striata | Common Lespedeza, Japanese clover | 2 | 1 |
| Lactuca canadensis | Canada Lettuce | 2 | 3 |
| Lactuca sativa | Lettuce, Garden lettuce | 3 | 3 |
| Lactuca serriola | Prickly Lettuce | 2 | 3 |
| Lagenaria siceraria | Bottle Gourd | 3 | 2 |
| Lagerstroemia indica | Crepe Myrtle, Crepeflower | 0 | 2 |
| Lamium album | White Dead Nettle | 2 | 3 |
| Lamium galeobdolon | Yellow Archangel | 2 | 1 |
| Lamium purpureum | Red Dead Nettle, Purple deadnettle | 2 | 1 |
| Laportea canadensis | Canadian Wood Nettle | 3 | 1 |
| Larix decidua | Larch, European Larch, Common Larch | 2 | 3 |
| Larix laricina | Tamarack, Hackmatack, American Larch | 2 | 2 |
| Laurus nobilis | Bay Tree, Sweet bay, Grecian Laurel, True Laurel, | 3 | 3 |
| Lavandula angustifolia | English Lavender, True Lavender | 2 | 3 |
| Lavandula x intermedia | Lavender, Lavandin | 2 | 2 |
| Ledum columbianum | Labrador tea | 2 | 1 |
| Ledum glandulosum | Labrador Tea, Western Labrador tea | 2 | 1 |
| Ledum groenlandicum | Labrador Tea, Bog Labrador tea | 2 | 3 |
| Ledum palustre | Wild Rosemary, Marsh Labrador tea | 2 | 3 |
| Lemna minor | Duckweed, Common duckweed | 1 | 2 |
| Leontodon hispidus | Rough Hawkbit, Bristly hawkbit | 2 | 1 |
| Leonurus japonicus | | 0 | 3 |
| Leonurus sibiricus | Chinese Motherwort, Honeyweed | 2 | 3 |
| Lepidium apetalum | | 2 | 2 |
| Lepidium iberis | | 1 | 1 |
| Lepidium sativum | Cress, Gardencress pepperweed | 3 | 1 |
| Lepidium virginicum | Wild Pepper Grass, Virginia pepperweed, Intermediate pepperweed, Menzies' pepperweed, Hairy pepperwe | 2 | 2 |
| Leptadenia hastata | Akamongot, Anvara | 4 | 3 |
| Leucanthemum vulgare | Ox-Eye Daisy, Marguerite | 2 | 2 |
| Levisticum officinale | Lovage, Garden lovage | 3 | 3 |
| Liatris punctata | Snakeroot, Dotted blazing star, Mexican blazing star, Nebraska blazing star | 1 | 2 |
| Liatris scariosa | Devil's Bite | 0 | 2 |
| Liatris spicata | Gayfeather, Dense blazing star, Spiked Blazing Star, Button Snakewot, Gayfeather, Spiked Gayfeather, | 0 | 3 |
| Liatris squarrosa | Scaly blazing star, Alabama blazing star | 0 | 1 |
| Ligularia hodgsonii | | 1 | 2 |
| Ligusticum porteri | Porter's Licorice Root | 1 | 3 |
| Ligustrum lucidum | Chinese Privet, Glossy privet, White Wax Tree, Tree Ligustrum | 1 | 3 |
| Lilium brownii | Hong Kong Lily | 3 | 2 |
| Lilium lancifolium | Tiger Lily, Devil Lily | 4 | 2 |
| Lilium martagon | Turk's Cap Lily, Martagon lily | 2 | 1 |
| Linaria canadensis | Blue Toadflax | 0 | 1 |
| Linaria vulgaris | Yellow Toadflax, Butter and eggs | 1 | 2 |
| Linum catharticum | Purging Flax, Fairy flax | 0 | 2 |
| Liquidambar styraciflua | Sweet Gum, Red Gum, American Sweet Gum, Red Sweet Gum, | 2 | 3 |
| Liriodendron tulipifera | Tulip Tree, Tulip Poplar, Yellow Poplar, Canary Whitewood | 1 | 2 |
| Lithospermum officinale | Gromwell, European stoneseed | 1 | 2 |
| Lithospermum ruderale | Western Gromwell, Western Stoneseed | 1 | 2 |
| Lobelia dortmanna | Water Lobelia, Dortmann's cardinalflower | 0 | 2 |
| Lobelia inflata | Indian Tobacco | 0 | 3 |
| Lobelia radicans | | 0 | 3 |
| Lobularia maritima | Sweet Alyssum | 1 | 1 |
| Lonicera canadensis | Fly Honeysuckle, American fly honeysuckle | 1 | 1 |
| Lonicera caprifolium | Italian Honeysuckle, Italian woodbine | 1 | 2 |
| Lonicera japonica | Japanese Honeysuckle | 2 | 3 |
| Lonicera periclymenum | Honeysuckle, European honeysuckle | 1 | 2 |
| Lupinus albus | White Lupin | 4 | 1 |
| Lycium barbarum | Goji, Box Thorn, Matrimony vine | 4 | 3 |
| Lycopodium clavatum | Common Club Moss, Running clubmoss | 0 | 3 |
| Lycopodium obscurum | Ground Pine, Rare clubmoss | 0 | 2 |
| Lycopodium serratum | Club Moss | 0 | 2 |
| Lycopus lucidus | Bugleweed, Rough bugleweed | 1 | 2 |
| Lygodesmia juncea | Skeleton Weed, Rush skeletonplant | 1 | 2 |
| Lysimachia christiniae | Jin Qian Cao | 0 | 2 |
| Lysimachia nummularia | Creeping Jenny, Moneywort, Creeping Charlie | 1 | 2 |
| Macleaya cordata | Plume Poppy | 0 | 1 |
| Magnolia officinalis | Hou Po | 0 | 3 |
| Mahonia aquifolium | Oregon Grape, Hollyleaved barberry, Oregon Holly Grape, Oregon Holly | 3 | 3 |
| Mahonia repens | Creeping Oregon Grape, Creeping barberry, Grape Oregon | 3 | 3 |
| Malus fusca | Oregon Crab, Oregon crab apple | 3 | 2 |
| Malva mohileviensis | | 3 | 1 |
| Malva moschata | Musk Mallow | 5 | 2 |
| Malva neglecta | Dwarf Mallow, Common mallow | 4 | 2 |
| Malva sylvestris | Mallow, High mallow, French Hollyhock, Common Mallow, Tree Mallow, Tall Mallow | 3 | 3 |
| Malva verticillata | Chinese Mallow, Cluster mallow | 5 | 2 |
| Mangifera indica | Mango, Bowen Mango | 5 | 3 |
| Manicaria saccifera | Ubussu, Troolie Palm | 2 | 2 |
| Manilkara zapota | Sapodilla, Nispero | 5 | 2 |
| Margyricarpus pinnatus | Pearl Berry | 2 | 1 |
| Marrubium vulgare | White Horehound, Horehound | 1 | 3 |
| Marsilea quadrifolia | Water Clover, European waterclover | 1 | 2 |
| Matthiola incana | Stock, Tenweeks stock, Gillyflower, Brompton Stock | 2 | 1 |
| Medeola virginiana | Indian Cucumber Root | 4 | 1 |
| Medicago sativa | Alfalfa, Yellow alfalfa | 4 | 3 |
| Melia azederach | Bead Tree, Pride of India, Chinaberry | 3 | 3 |
| Melilotus officinalis | Melilot, Sweetclover | 2 | 3 |
| Melittis melissophyllum | Bastard Balm | 1 | 1 |
| Menispermum canadense | Canada Moonseed, Common moonseed | 0 | 2 |
| Mentha diemenica | | 2 | 2 |
| Mentha spicata | Spearmint | 4 | 3 |
| Mentzelia multiflora | Manyflowered Mentzelia, Adonis blazingstar | 2 | 1 |
| Menyanthes trifoliata | Bogbean, Buckbean, Marsh Trefoil, | 2 | 3 |
| Mesembryanthemum crystallinum | Ice Plant, Common iceplant | 3 | 1 |
| Meum athamanticum | Spignel | 2 | 1 |
| Micromeria juliana | Savory | 1 | 1 |
| Mimosa pudica | Morivivir, Sensitive Plant | 2 | 2 |
| Mirabilis jalapa | Marvel Of Peru, Miracle Flower of Peru, Four O'Clock | 2 | 2 |
| Miscanthus sinensis | Eulalia, Chinese silvergrass, Silver Feather, Eulalia Grass, Japanese Silver Grass, Ornamental Grass | 1 | 2 |
| Mitchella repens | Partridge Berry | 3 | 3 |
| Monarda didyma | Bergamot, Scarlet beebalm, Horsemint, Oswego Tea, Bee Balm | 3 | 2 |
| Monarda fistulosa | Wild Bergamot, Mintleaf bergamot, Wild Bee-Balm, Lupine | 3 | 2 |
| Monarda punctata | Horse Mint, Spotted beebalm | 1 | 3 |
| Mondia whitei | Mondia, White's Ginger | 3 | 4 |
| Morinda citrifolia | Noni, Indian Mulberry | 3 | 4 |
| Moringa oleifera | Horseradish Tree, Moringa, | 4 | 4 |
| Morus alba | White Mulberry, Common Mulberry, | 4 | 3 |
| Morus alba multicaulis | White Mulberry | 4 | 3 |
| Morus bombycis | Kuwa | 2 | 2 |
| Musa basjoo | Japanese Banana | 2 | 2 |
| Musanga cecropioides | Corkwood | 3 | 4 |
| Muscari comosum | Tassel Hyacinth, Tassel grape hyacinth | 3 | 1 |
| Nabalus albus | White Lettuce | 0 | 2 |
| Nardostachys grandiflora | Spikenard | 1 | 3 |
| Nasturtium microphyllum | Watercress, Onerow yellowcress | 3 | 1 |
| Nasturtium officinale | Watercress | 4 | 3 |
| Nasturtium x sterile | Brown Watercress | 4 | 3 |
| Nemopanthus mucronatus | Mountain Holly | 1 | 1 |
| Nerium oleander | Oleander, Rose Bay | 0 | 2 |
| Nicandra physaloides | Shoo Fly | 1 | 2 |
| Nicotiana tabacum | Tobacco, Cultivated tobacco | 2 | 2 |
| Nigella sativa | Black Cumin | 3 | 3 |
| Nymphoides peltata | Water Fringe, Yellow floatingheart | 2 | 2 |
| Oenanthe aquatica | Water Dropwort, Fineleaf waterdropwort | 0 | 2 |
| Oldenlandia diffusa | Snake-Needle Grass | 0 | 3 |
| Ononis spinosa | Spiny Rest Harrow | 2 | 2 |
| Opuntia ficus-indica | Prickly Pear, Barbary fig | 3 | 2 |
| Opuntia polyacantha | Plains Prickly Pear, El Paso pricklypear, Grizzlybear pricklypear, Navajo Bridge pricklypear, Hairsp | 3 | 1 |
| Orthosiphon aristatus | Java Tea, Cat's Whiskers | 0 | 4 |
| Osmunda regalis | Royal Fern, Flowering Fern | 0 | 2 |
| Oxalis acetosella | Wood Sorrel | 3 | 2 |
| Oxalis corniculata | Yellow Sorrel, Creeping woodsorrel | 2 | 2 |
| Oxydendrum arboreum | Sorrel Tree, Sourwood | 3 | 2 |
| Packera aurea | Golden Groundsel - Life Root, Golden ragwort | 0 | 2 |
| Paederia foetida | Skunk Vine | 2 | 4 |
| Paeonia japonica | Yama-Shakuyaku | 1 | 1 |
| Paeonia lactiflora | Chinese Peony, Peony | 1 | 3 |
| Paeonia obovata | | 0 | 3 |
| Paeonia officinalis | Peony, Common peony | 1 | 2 |
| Paeonia veitchii | | 0 | 3 |
| Paliurus ramosissimus | Ma Jia Zi | 0 | 2 |
| Paliurus spina-christi | Christ's Thorn, Jeruselem thorn | 1 | 1 |
| Panax pseudoginseng | Ginseng, Japanese ginseng | 1 | 3 |
| Panax pseudoginseng notoginseng | San Qi | 1 | 5 |
| Pandanus amaryllifolius | Fragrant Pandan | 3 | 2 |
| Parietaria judaica | Pellitory Of The Wall, Spreading pellitory | 2 | 3 |
| Parietaria officinalis | Pellitory Of The Wall, Upright pellitory | 2 | 3 |
| Parkia biglobosa | African Locust Bean | 4 | 2 |
| Parnassia palustris | Grass Of Parnassus, Marsh grass of Parnassus, Mountain grass of Parnassus, Alaska grass of Parnass | 0 | 2 |
| Paronychia argentea | Algerian Tea | 1 | 1 |
| Paronychia capitata | Algerian Tea | 1 | 1 |
| Parthenocissus quinquefolia | Virginia Creeper, Woodbine | 2 | 2 |
| Passiflora quadrangularis | Giant Granadilla, Badea | 4 | 2 |
| Patrinia scabiosifolia | Eastern Valerian, Scabious Patrinia | 1 | 3 |
| Paullinia cupana | Guarana | 4 | 2 |
| Pedicularis longiflora tubiformis | | 0 | 2 |
| Pedicularis resupinata | Lousewort | 1 | 2 |
| Peganum harmala | Syrian Rue, Harmal peganum | 1 | 3 |
| Perideridia gairdneri | Yampa, Gardner's yampah, Common yampah | 5 | 2 |
| Periploca graeca | Silk Vine | 0 | 1 |
| Persicaria odorata | Vietnamese coriander, Asian mint | 3 | 2 |
| Petasites hybridus | Butterbur, Pestilence wort | 0 | 3 |
| Petiveria alliacea | Guinea Hen Weed | 0 | 4 |
| Petroselinum crispum | Parsley | 4 | 4 |
| Petroselinum crispum tuberosum | Hamburg Parsley | 4 | 3 |
| Peucedanum cervaria | | 0 | 1 |
| Peucedanum officinale | Hog's Fennel | 0 | 2 |
| Peucedanum oreoselinum | | 0 | 1 |
| Peucedanum ostruthium | Masterwort | 2 | 2 |
| Peumus boldus | Boldu, Boldo | 2 | 3 |
| Phaseolus vulgaris | French Bean, Kidney bean | 5 | 2 |
| Phellodendron amurense | Amur Cork Tree, Chinese Corktree | 1 | 3 |
| Phellodendron chinense | Chinese Cork Tree | 0 | 3 |
| Phillyrea latifolia | | 1 | 1 |
| Photinia serratifolia | Taiwanese photinia , Chinese Photinia | 0 | 1 |
| Phragmites australis | Common Reed, American common reed, Hybrid common reed, European common reed, Subtropical common re | 5 | 2 |
| Phyla nodiflora | Frogfruit, Turkey tangle fogfruit | 1 | 2 |
| Phyllanthus emblica | Emblica, Indian Gooseberry | 3 | 5 |
| Phyllostachys nigra | Black Bamboo, Kuro-Chiku | 4 | 3 |
| Phyllostachys nigra henonis | Ha-Chiku | 4 | 3 |
| Phyllostachys nigra punctata | Kurodake | 4 | 3 |
| Physalis alkekengi | Winter Cherry, Strawberry groundcherry,Ground Cherry, Chinese Lantern | 2 | 2 |
| Physalis alkekengi franchetii | Winter Cherry | 2 | 2 |
| Physalis angulata | Cutleaf Ground Cherry | 3 | 1 |
| Physalis heterophylla | Clammy Ground Cherry, Rowell's groundcherry | 3 | 1 |
| Physalis minima | Sunberry, Pygmy groundcherry | 3 | 1 |
| Physalis peruviana | Goldenberry, Peruvian groundcherry | 5 | 1 |
| Physalis pubescens | Ground Cherry, Husk tomato | 4 | 1 |
| Physalis viscosa | Sticky Ground Cherry, Starhair groundcherry | 4 | 2 |
| Phytolacca acinosa | Indian Poke | 2 | 3 |
| Phytolacca dodecandra | Endod, Pokeberry | 2 | 3 |
| Phytolacca esculenta | | 2 | 2 |
| Picea glauca | White Spruce, Black Hills Spruce, Canadian Spruce | 2 | 2 |
| Picea sitchensis | Sitka Spruce | 2 | 2 |
| Pilosella officinarum | Mouse-Ear Hawkweed | 0 | 3 |
| Pimpinella major | Greater Burnet Saxifrage, Hollowstem burnet saxifrage | 1 | 2 |
| Pimpinella saxifraga | Burnet Saxifrage, Solidstem burnet saxifrage | 2 | 2 |
| Pinellia tripartita | | 0 | 1 |
| Pinus banksiana | Jack Pine | 2 | 2 |
| Pinus caribaea | Caribbean Pine. Caribbean pitch pine | 2 | 2 |
| Pinus contorta | Beach Pine, Lodgepole pine, Bolander beach pine, Beach pine, Sierra lodgepole pine, Yukon pine, Shor | 3 | 2 |
| Pinus edulis | Rocky Mountain Piñon, Twoneedle pinyon, Nut Pine, Pinyon Pine, Rocky Mountain Pinyon Pine, Singlelea | 4 | 2 |
| Pinus flexilis | Limber Pine, Rocky Mountain White Pine | 3 | 2 |
| Pinus gerardiana | Chilghoza Pine | 3 | 2 |
| Pinus massoniana | Chinese Red Pine | 2 | 2 |
| Pinus monophylla | Single Leaf Piñon, Single Leaf PinyonPine, Stone Pine, Pine Pinyon | 4 | 2 |
| Pinus monticola | Western White Pine | 2 | 2 |
| Pinus muricata | Bishop's Pine | 2 | 2 |
| Pinus ponderosa | Ponderosa Pine, Washoe pine | 3 | 2 |
| Pinus quadrifolia | Parry Piñon, Parry's Pinyon Pine, Four-leaved Pinyon | 4 | 2 |
| Pinus resinosa | Red Pine | 1 | 2 |
| Pinus rigida | Northern Pitch Pine, Pitch pine | 1 | 2 |
| Pinus roxburghii | Chir Pine | 2 | 2 |
| Pinus sabiniana | Digger Pine, California foothill pine, Bull Pine, Gray Pine, Digger Pine | 4 | 2 |
| Pinus strobus | White Pine, Eastern white pine | 2 | 3 |
| Pinus sylvestris | Scot's Pine, Scotch Pine | 2 | 3 |
| Pinus wallichiana | Himalayan Blue Pine, Bhutan pine, Himalayan Pine | 2 | 2 |
| Pistacia lentiscus | Mastic Tree - Pistachier Lentisque | 2 | 2 |
| Plantago asiatica | Che Qian Zi | 1 | 3 |
| Plantago major | Common Plantain, Cart Track Plant,White Man's Foot ,Plantain | 2 | 3 |
| Plantago media | Hoary Plantain | 2 | 2 |
| Platanus occidentalis | Buttonwood, American sycamore, American Planetree, Sycamore, American Sycamore | 1 | 2 |
| Podocarpium oldhamii | | 2 | 1 |
| Polygala amara | Bitter Milkwort | 0 | 1 |
| Polygala senega | Senega Snake Root | 0 | 3 |
| Polygala sibirica | Yuan Zhi | 1 | 3 |
| Polygala vulgaris | Milkwort, Common milkwort | 1 | 2 |
| Polygonatum odoratum | Solomon's Seal | 2 | 3 |
| Polygonum aviculare | Knotweed, Prostrate knotweed | 2 | 3 |
| Polygonum bistorta | Bistort, Meadow bistort, Snakeweed | 3 | 3 |
| Polygonum hydropiper | Smartweed, Marshpepper knotweed | 2 | 2 |
| Polygonum japonicum | Japanese Knotweed, Mexican Bamboo, Japanese Knotweed | 3 | 3 |
| Polygonum perfoliatum | Asiatic tearthumb | 1 | 1 |
| Polygonum persicaria | Red Leg, Spotted ladysthumb | 1 | 2 |
| Polygonum sagittatum | False Buckwheat, Arrowleaf tearthumb | 0 | 1 |
| Polygonum virginianum | Jumpseed, Fleece Flower, Smartweed, Knotweed | 1 | 1 |
| Polypodium lineare | | 0 | 1 |
| Polypodium vulgare | Polypody, Adders Fern, Golden Maidenhair Fern, Wall Fern, Common Polypod Fern | 2 | 3 |
| Polyscias fruticosa | Ming Aralia, Chinese Ariala | 2 | 2 |
| Polytrichum juniperinum | Hair-Cap Moss, Juniper polytrichum moss | 0 | 2 |
| Poncirus trifoliata | Bitter Orange, Hardy orange, Trifoliat Orange, Japanese Hardy Orange | 3 | 2 |
| Populus 'Balsam Spire' | Tacatricho 32 | 0 | 3 |
| Populus alba | White Poplar | 1 | 2 |
| Populus balsamifera | Balsam Poplar, Black cottonwood | 1 | 3 |
| Populus hybrids | Hybrid poplar | 3 | 3 |
| Populus nigra | Black Poplar, Lombardy poplar | 1 | 3 |
| Populus tremula | Aspen Poplar, European aspen, Aspen | 1 | 2 |
| Populus tremuloides | American Aspen - Poplar, Quaking aspen | 1 | 3 |
| Populus trichocarpa | Western Balsam Poplar, Black cottonwood | 1 | 3 |
| Populus x jackii | Balm Of Gilead | 0 | 3 |
| Portulaca oleracea | Green Purslane, Little hogweed | 4 | 3 |
| Portulaca oleracea sativa | Golden Purslane | 4 | 3 |
| Potentilla anserina | Silverweed | 3 | 3 |
| Pouteria sapota | Sapote, Mamey Sapote | 4 | 2 |
| Prangos pabularia | | 1 | 2 |
| Primula elatior | Oxlip | 2 | 2 |
| Primula veris | Cowslip, Cowslip primrose | 3 | 3 |
| Prunella vulgaris | Self-Heal, Common selfheal, Aleutian selfheal, Lance selfheal | 2 | 3 |
| Prunus americana | American Plum, American Wild Plum, Wild Plum | 3 | 2 |
| Prunus avium | Wild Cherry, Sweet cherry | 4 | 2 |
| Prunus humilis | Bush Cherry | 3 | 2 |
| Prunus japonica | Korean Cherry, Japanese bush cherry | 3 | 3 |
| Prunus japonica nakai | Japanese Plum | 3 | 3 |
| Prunus padus | Bird Cherry, European bird cherry | 3 | 2 |
| Prunus persica | Peach, Flowering Peach, Ornamental Peach, Common Peach | 5 | 3 |
| Prunus persica nucipersica | Nectarine | 4 | 3 |
| Prunus spinosa | Sloe - Blackthorn | 3 | 2 |
| Pseudognaphalium obtusifolium | White Balsam, Rabbit-tobacco | 0 | 2 |
| Psoralea corylifolia | Bu Gu Zhi | 1 | 4 |
| Pteridium aquilinum | Bracken, Western brackenfern, Decomposition brackenfern, Hairy brackenfern | 2 | 2 |
| Pteridium aquilinum esculentum | Bracken | 2 | 2 |
| Pulmonaria officinalis | Lungwort, Common lungwort, Jerusalem Sage, Jerusalem Cowslip | 2 | 3 |
| Pulsatilla patens | Pasque Flower, Eastern pasqueflower, Cutleaf anemone | 0 | 2 |
| Pulsatilla vulgaris | Pasque Flower, European pasqueflower | 0 | 3 |
| Pyrola minor | Wintergreen, Snowline wintergreen | 1 | 1 |
| Pyrola rotundifolia | Round-Leaved Wintergreen | 0 | 2 |
| Quercus leucotrichophora | | 2 | 2 |
| Raphanus sativus | Radish, Cultivated radish | 4 | 3 |
| Raphanus sativus caudatus | Rat-Tail Radish | 3 | 3 |
| Raphanus sativus niger | Oriental Radish | 4 | 3 |
| Raphanus sativus oleiformis | Fodder Radish | 3 | 3 |
| Rehmannia glutinosa | Chinese Foxglove - Di Huang | 1 | 3 |
| Reseda odorata | Mignonette, Garden mignonette | 0 | 1 |
| Rhamnus cathartica | Common Buckthorn | 0 | 3 |
| Rheum nobile | Sikkim Rhubarb | 3 | 2 |
| Rheum officinale | Chinese Rhubarb | 1 | 3 |
| Rheum palmatum | Turkey Rhubarb, Chinese Rhubarb - Da Huang, Chinese rhubarb | 3 | 5 |
| Rheum palmatum tanguticum | Da Huang | 3 | 5 |
| Rheum x cultorum | Rhubarb | 4 | 3 |
| Rhododendron ferrugineum | Alpenrose | 0 | 1 |
| Rhododendron japonicum | Japanese azalea | 1 | 1 |
| Rhus aromatica | Lemon Sumach, Fragrant sumac | 4 | 2 |
| Rhus coriaria | Elm-Leaved Sumach, Sicilian sumac | 2 | 1 |
| Rhus glabra | Smooth Sumach | 4 | 3 |
| Rhus trilobata | Skunk Bush, Basketbush, Squawbush, Three Leaf Sumac | 4 | 2 |
| Rhus typhina | Stag's Horn Sumach, Velvet Sumac, Staghorn Sumac | 4 | 2 |
| Rhus x pulvinata | | 4 | 2 |
| Ribes nigrum | Blackcurrant, European black currant | 5 | 3 |
| Robinia pseudoacacia | Black Locust, Yellow Locust | 3 | 2 |
| Rohdea japonica | | 0 | 2 |
| Rosa canina | Dog Rose | 3 | 3 |
| Rosa cymosa | | 2 | 2 |
| Rosa laevigata | Cherokee Rose | 2 | 3 |
| Rosa multiflora | Japanese Rose, Multiflora rose | 2 | 2 |
| Rosa woodsii | Western Wild Rose, Woods' rose, Tehachapi rose | 2 | 2 |
| Rubia cordifolia | Indian Madder | 2 | 3 |
| Rubia manjith | Indian Madder | 1 | 2 |
| Rubia peregrina | Wild Madder | 0 | 1 |
| Rubia tinctorum | Madder, Dyer's madder | 0 | 2 |
| Rubus allegheniensis | Alleghany Blackberry, Graves' blackberry | 3 | 2 |
| Rubus fruticosus | Blackberry, Shrubby blackberry | 5 | 3 |
| Rubus odoratus | Thimbleberry, Purpleflowering raspberry | 3 | 2 |
| Rumex acetosa | Sorrel, Garden sorrel | 5 | 3 |
| Rumex acetosella | Sheeps Sorrel, Common sheep sorrel | 4 | 3 |
| Rumex daiwoo | sour dock | 1 | 2 |
| Rumex scutatus | Buckler-Leaved Sorrel, French sorrel | 4 | 1 |
| Rumex vesicarius | Bladder Dock | 2 | 2 |
| Ruscus aculeatus | Butcher's Broom - Knee Holly | 1 | 3 |
| Sagittaria sagittifolia | Arrow Head, Hawaii arrowhead | 5 | 1 |
| Sagittaria sagittifolia leucopetala | | 3 | 1 |
| Sagittaria trifolia | Chinese Arrowroot, Threeleaf arrowhead | 4 | 2 |
| Salix alba | White Willow | 1 | 3 |
| Salix alba caerulea | Cricket Bat Willow | 1 | 3 |
| Salix alba vitellina | Golden Willow | 1 | 3 |
| Salix gooddingii | Goodding's Willow | 1 | 2 |
| Salix nigra | Black Willow | 1 | 3 |
| Salix purpurea | Purple Osier. purpleosier willow | 1 | 3 |
| Salix purpurea lambertiana | Purple Osier | 1 | 3 |
| Salsola kali | Saltwort, Russian thistle | 3 | 2 |
| Salvia plebeia | | 1 | 1 |
| Sambucus ebulus | Dwarf Elder, Dwarf elderberry | 1 | 2 |
| Sambucus javanica | Chinese Elder | 1 | 2 |
| Sambucus nigra | Elderberry - European Elder, Black elderberry, American black elderberry, Blue elderberry, Europea | 4 | 3 |
| Sambucus nigra spp canadensis | American Elder | 4 | 3 |
| Sambucus pubens | American Red Elder | 3 | 1 |
| Sambucus racemosa | Red Elder, Red elderberry, Rocky Mountain elder, European Red Elderberry | 3 | 2 |
| Sambucus racemosa kamtschatica | Red Elder | 3 | 2 |
| Sambucus wightiana | Elder | 0 | 2 |
| Sambucus williamsii | | 1 | 2 |
| Sanguinaria canadensis | Blood Root, Red Puccoon, Bloodroot | 0 | 3 |
| Sanguisorba officinalis | Great Burnet | 2 | 3 |
| Sapindus saponaria | Soapberry, Wild Chinaberry, Florida Soap Berry, Soap Nut, Soap Tree | 0 | 2 |
| Sapium sebiferum | Vegetable Tallow, Chinese tallow, Popcorn Tree, Chinese Tallow Tree | 2 | 2 |
| Saponaria officinalis | Soapwort, Bouncingbet | 0 | 3 |
| Sargentodoxa cuneata | | 0 | 2 |
| Sarracenia purpurea | Pitcher Plant, Purple Pitcherplant, Huntsman's Cup, Purple Pitcher Plant, Sweet Pitcher Plant, Com | 0 | 2 |
| Sassafras albidum | Sassafras, Common Sassafras | 5 | 3 |
| Saururus chinensis | | 0 | 2 |
| Scaevola spinescens | Currant Bush | 1 | 1 |
| Scirpus lacustris | Bulrush | 3 | 1 |
| Scirpus maritimus | Seaside Bulrush. Cosmopolitan Bulrush | 3 | 1 |
| Scirpus validus | River Club-Rush | 2 | 1 |
| Scirpus validus creber | Soft-Stem Bulrush | 2 | 1 |
| Scoparia dulcis | Sweet Broom, Licorice Weed, Vassourinha | 2 | 4 |
| Scopolia japonica | Japanese belladonna | 0 | 2 |
| Scrophularia marilandica | Carpenter's Square | 0 | 2 |
| Scrophularia ningpoensis | | 0 | 3 |
| Scrophularia nodosa | Knotted Figwort, Woodland figwort | 1 | 3 |
| Scutellaria baicalensis | Baikal Skullcap - Huang-Qin | 1 | 3 |
| Scutellaria barbata | Barbed Skullcap | 0 | 2 |
| Scutellaria lateriflora | Virginian Skullcap, Blue skullcap | 0 | 3 |
| Sechium edule | Chayote, Mirliton, Cho Ko, Cho-Cho, Vegetable Pear | 4 | 2 |
| Semiaquilegia adoxoides | Tian Kui | 0 | 2 |
| Sempervivum tectorum | Houseleek, Common houseleek, Hen and Chickens | 2 | 3 |
| Senecio erucifolius | Hoary Groundsel, Hoary ragwort | 0 | 2 |
| Senecio jacobaea | Ragwort, Stinking willie | 0 | 2 |
| Senecio vulgaris | Groundsel | 1 | 2 |
| Senna alata | Ringworm Bush, Candle Bush, Empress Candle Plant | 2 | 4 |
| Senna marilandica | Wild Senna, Maryland senna | 0 | 3 |
| Serenoa repens | Saw Palmetto | 2 | 3 |
| Sesamum indicum | Sesame | 3 | 3 |
| Sesbania grandiflora | Vegetable Hummingbird, Agati, | 3 | 2 |
| Setaria italica | Foxtail Millet | 4 | 2 |
| Setaria viridis | Green Bristle Grass | 2 | 2 |
| Silphium laciniatum | Compass Plant, Robinson's compassplant | 2 | 2 |
| Silphium terebinthinaceum | Prairie Dockm, Prairie rosinweed, Lucy Braun's rosinweed | 0 | 2 |
| Silybum marianum | Milk Thistle, Blessed milkthistle | 3 | 5 |
| Sinapis alba | White Mustard | 3 | 3 |
| Sison amomum | Bastard Stone-Parsley | 2 | 1 |
| Sisymbrium officinale | Hedge Mustard | 1 | 2 |
| Smilax aspera | Sarsaparilla, Rough bindweed | 3 | 3 |
| Smilax bona-nox | Greenbriar, Saw greenbrier, Dunes saw greenbrier | 3 | 2 |
| Smilax china | China Root | 4 | 3 |
| Smilax officinalis | Honduran sarsaparilla | 2 | 4 |
| Solanum carolinense | Horse Nettle, Carolina horsenettle | 0 | 2 |
| Solanum dulcamara | Bittersweet. Bittersweet Nightshade, Climbing nightshade, Bittersweet, Deadly Nightshade, Poisonous | 0 | 3 |
| Solanum nigrum | Black Nightshade, Common Nightshade, Poisonberry, Black Nightshade | 2 | 2 |
| Solanum scabrum | Garden Huckleberry | 3 | 2 |
| Solanum torvum | Pea Eggplant, Turkey berry | 3 | 3 |
| Solidago gigantea | Giant Goldenrod | 0 | 2 |
| Solidago odora | Sweet Goldenrod, Anisescented goldenrod, Chapman's goldenrod | 2 | 2 |
| Solidago rigida | Stiff Goldenrod, Flat Topped Goldenrod, Stiff Goldenrod | 0 | 2 |
| Solidago virgaurea | Goldenrod | 1 | 3 |
| Sophora flavescens | Ku Shen, Shrubby sophora | 0 | 3 |
| Sophora japonica | Japanese Pagoda Tree, Scholar Tree | 2 | 3 |
| Sophora moorcroftiana | | 0 | 1 |
| Sophora tonkinensis | | 0 | 2 |
| Sorbus americana | American Mountain Ash | 1 | 2 |
| Sorbus aria | Whitebeam, Chess-apple | 3 | 1 |
| Sorbus aucuparia | Mountain Ash, European mountain ash | 2 | 2 |
| Sorghum bicolor | Sorghum, Common wild sorghum, Grain sorghum, Sudangrass | 4 | 2 |
| Sorghum halepense | Johnson Grass | 3 | 1 |
| Spartium junceum | Spanish Broom, Weaver's Broom, Spanish Broom | 0 | 2 |
| Spergula arvensis | Corn Spurrey | 1 | 1 |
| Spiraea tomentosa | Hardhack, Steeplebush | 0 | 2 |
| Spirodela polyrrhiza | Great Duckweed, Common duckmeat | 1 | 2 |
| Spondias dulcis | Golden Apple, Ambarella, | 4 | 2 |
| Stachys baicalensis | | 1 | 2 |
| Stachys officinalis | Wood Betony, Common hedgenettle, Betony, Woundwort | 1 | 2 |
| Stachys sylvatica | Hedge Woundwort, Whitespot | 0 | 1 |
| Stauntonia hexaphylla | | 3 | 1 |
| Stellaria media | Chickweed, Common chickweed | 3 | 3 |
| Strychnos potatorum | Clearing Nut | 2 | 2 |
| Succisa pratensis | Devil's Bit Scabious, Devilsbit | 2 | 2 |
| Symphoricarpos albus laevigatus | Snowberry | 1 | 2 |
| Symplocarpus foetidus | Skunk Cabbage | 2 | 3 |
| Syzygium cumini | Jambolan, Java Plum, Malabar Plum, Jambu | 3 | 3 |
| Syzygium jambos | Jambos, Rose Apple, Plum Rose | 3 | 2 |
| Tagetes erecta | African Marigold, Aztec marigold, Big Marigold, American Marigold | 3 | 3 |
| Tagetes lucida | Mexican Tarragon, Sweetscented marigold | 4 | 3 |
| Tagetes minuta | Muster-John-Henry | 2 | 2 |
| Tagetes patula | French Marigold, Dwarf French Marigold | 2 | 2 |
| Tamarix anglica | English Tree | 1 | 1 |
| Tamarix chinensis | Chinese Tamarisk, Five-stamen tamarisk | 0 | 2 |
| Tamarix gallica | Manna Plant, French tamarisk | 1 | 2 |
| Tamus communis | Black Bryony | 1 | 2 |
| Taraxacum japonicum | | 1 | 1 |
| Taraxacum mongolicum | | 1 | 3 |
| Taraxacum officinale | Dandelion - Kukraundha, Kanphool, Common dandelion, Dandelion | 4 | 3 |
|