List of plants by common name

'') • African sheepbush – Pentzia incana • Alder – Alnus • Black alder – Alnus glutinosa, Ilex verticillata • Common alder – Alnus glutinosa • False alder – Ilex verticillata • Gray alder – Alnus incana • Speckled alder – Alnus incana • White alder – Alnus incana, Alnus rhombifolia, Ilex verticillata • Almond – Prunus dulcis • Aloe vera – Aloe vera • Amaranth – Amaranthus • Foxtail amaranth – Amaranthus caudatus • Pendant amaranth – Amaranthus caudatus • Ambrosia • Tall ambrosia – Ambrosia trifida • Amy root – Apocynum cannabinum • Angel's tears – Brugmansia suaveolens • Angel trumpet – Brugmansia suaveolens, Datura ferox, Datura metel • Apple – Malus domestica • Apricot – Prunus armeniaca • Arfaj – Rhanterium epapposum • Arizona sycamore – Platanus wrighitii • Arrowwood – Cornus florida • Indian arrowwood – Cornus florida • Ash – Fraxinus spp. • Black ash – Acer negundo, Fraxinus nigra • Blue ash – Fraxinus quadrangulata • Cane ash – Fraxinus americana • European ash – Fraxinus excelsior • Green ash – Fraxinus pennsylvanica lanceolata • Maple ash – Acer negundo • Red ash – Fraxinus pennsylvanica lanceolata • River ash – Fraxinus pennsylvanica • Swamp ash – Fraxinus pennsylvanica • White ash – Fraxinus americana • Water ash – Acer negundo, Fraxinus pennsylvanica • Azolla – Azolla • Carolina azolla – Azolla caroliniana • Water Fern – Azolla Filiculoides ==B==

• Bamboo – bamboosa ardinarifolia • Banana – mainly Musa × paradisica, but also other Musa species and hybrids • Baobab – Adansonia • Bay – Laurus spp. or Umbellularia spp. • Bay laurel – Laurus nobilis (culinary) • California bay – Umbellularia californica • Bean – Fabaceae, specifically Phaseolus spp. • Bearberry – Ilex decidua • Bear corn – Veratrum viride • Beech – Fagus • Bindweed • Blue bindweed – Solanum dulcamara • Bird's nest – Daucus carota • Bird's nest plant – Daucus carota • Bird of paradise – Strelitzia reginae • Birch – Betula spp. • Black birch – Betula lenta, Betula nigra • Bolean birch – Betula papyrifera • Canoe birch – Betula papyrifera • Cherry birch – Betula lenta • European weeping birch – Betula pendula • European white birch – Betula pendula • Gray birch – Betula alleghaniensis • Mahogany birch – Betula lenta • Paper birch – Betula papyrifera • Red birch – Betula nigra • River birch – Betula nigra, Betula lenta • Silver birch – Betula papyrifera • Spice birch – Betula lenta • Sweet birch – Betula lenta • Water birch – Betula nigra • Weeping birch – Betula pendula • White birch – Betula papyrifera, Betula pendula • Yellow birch – Betula alleghaniensis • Bittercress – Barbarea vulgaris, Cardamine bulbosa, Cardamine hirsuta • Hairy bittercress – Cardamine hirsuta • Bittersweet – Solanum dulcamara • Trailing bittersweet – Solanum dulcamara • Bitterweed – Any plant in the genus Ambrosia, especially Ambrosia artemisiifolia, Artemisia trifida, Helenium amarum • Blackberry – Rubus spp., Rubus pensilvanicus, Rubus occidentalis • Hispid swamp blackberry – Rubus hispidus • Pennsylvania blackberry – Rubus pensilvanicus • Running swamp blackberry – Rubus hispidus • Black cap – Rubus occidentalis • Black-eyed Susan – Rudbeckia hirta, Rudbeckia fulgida • Blackhaw – Viburnum prunifolium • Black-weed – Ambrosia artemisiifolia • Blueberry – Vaccinium (Cyanococcus) spp. • Bluebell – Hyacinthoides non-scripta • Blue-of-the-heavens – Allium caeruleum • Bola verde – Anisocapparis speciosa • Bow-wood – Maclura pomifera • Box – Buxus • False box – Cornus florida • Boxelder – Acer negundo • Boxwood – Buxus, Cornus florida • False boxwood – Cornus florida • Brier • Sand brier – Solanum carolinense • Brittlebush – Encelia farinosa • Broadleaf – Plantago major • Brown Betty – Rudbeckia hirta • Brown-eyed susan – Rudbeckia hirta, Rudbeckia triloba • Buckeye (California buckeye) – Aesculus californica • Buckeye – Aesculus spp. • Buffalo weed – Ambrosia trifida • Bugle – Ajuga reptans • Butterfly flower – Asclepias syriaca • Butterfly weed – Asclepias tuberosa • Beaked hazelnut – Corylus cornuta • Bottle tree • Flame bottle tree – Brachychiton acerifolius • Queensland bottle tree – Brachychiton rupestris • Broad leaf bottle tree – Brachychiton australis ==C==

'') • Cabbage – Brassica oleracea • Clumpfoot cabbage – Symplocarpus foetidus • Meadow cabbage – Symplocarpus foetidus • Skunk cabbage – Symplocarpus foetidus, Lysichiton spp. • Swamp cabbage – Symplocarpus foetidus • California bay – Umbellularia californica • California buckeye – Aesculus californica • California sycamore – Platanus racemosa • California walnut – Juglans californica • Canada root – Asclepias tuberosa • Cancer jalap – Phytolacca americana • Carrot – Daucus carota • Wild carrot – Daucus carota • Carrot weed – Ambrosia artemisiifolia • Cart track plant – Plantago major • Catalina ironwood – Lyonothamnus floribundus ssp. floribundus • Cedar – Cedrus spp. • Blue Atlas cedar – Cedrus atlantica • Deodar cedar – Cedrus deodara • Chalk milkwort – Polygala calcarea • Charlock – Sinapis arvensis • Cherry – Prunus spp. • Black cherry – Prunus serotina • Cabinet cherry – Prunus serotina • Rum cherry – Prunus serotina • Whiskey cherry – Prunus serotina • Wild cherry – Prunus avium, Prunus serotina • Wild black cherry – Prunus serotina • Chestnut – Castanea spp. • Chigger flower – Asclepias tuberosa • Chrysanthemum – '', Chrysanthemum morifolium'' • (True) cinnamon – Cinnamomum verum • Clove – Syzygium aromaticum • Clover – Trifolium spp. • Coakum – Phytolacca americana • Coconut – Cocos nucifera • Coffee plant – Coffea spp. • Colic weed – Corydalis flavula • Collard – Symplocarpus foetidus • Columbine – Aquilegia vulgaris • Colwort • Hare's colwort – Sonchus oleraceus • Comfrey – Symphytum spp. • Coneflower • Brilliant coneflower – Rudbeckia fulgida • Cutleaf coneflower – Rudbeckia laciniata • Eastern coneflower – Rudbeckia fulgida • Green-headed Coneflower – Rudbeckia laciniata • Orange coneflower – Rudbeckia fulgida • Tall coneflower – Rudbeckia laciniata • Thin-leaved Coneflower – Rudbeckia triloba • Three-leaved Coneflower – Rudbeckia triloba • Coralberry – Ilex verticillata • Cornel • Blueberry cornel – Cornus amomum • Silky cornel – Cornus amomum • White cornel – Cornus florida • Cornelian tree – Cornus florida • Corydalis – Corydalis spp. • Fern-leaf Corydalis – Corydalis chelidoniifolia • Golden corydalis – Corydalis aurea • Pale corydalis – Corydalis flavula, Corydalis sempervirens • Pink corydalis – Corydalis sempervirens • Yellow corydalis – Corydalis lutea, Corydalis flavula • Cotton plant – Gossypium • Creeping yellowcress – Rorippa sylvestris • Cress – (several genera) • American cress – Barbarea verna • Bank cress – Barbarea verna • Belle Isle cress – Barbarea verna • Bermuda cress – Barbarea verna • Bulbous cress – Cardamine bulbosa • Lamb's cress – Cardamine hirsuta • Land cress – Barbarea verna, Cardamine hirsuta • Scurvy cress – Barbarea verna • Spring cress – Cardamine bulbosa • Upland cress – Barbarea verna • Crowfoot – Cardamine concatenata • Crow's nest – Daucus carota • Crow's toes – Cardamine concatenata • Cucumber – Cucumis sativus ==D==

'') • Daisy • Brown daisy – Rudbeckia hirta • Common daisy, daisy – Bellis perennis • Gloriosa daisy – Rudbeckia hirta • Poorland daisy – Rudbeckia hirta • Yellow daisy – Rudbeckia hirta • Yellow ox-eye daisy – Rudbeckia hirta • Dandelion – Taraxacum • Datura - Datura spp. • Baja datura – Datura arenicola • Black datura – Datura metel • Hindu datura – Datura metel • Leichhardt's datura – Datura leichhardtii • Sacred datura – Datura wrightii • Swamp datura – Datura ceratocaula • Vizcaíno Desert datura – Datura arenicola • Deadnettle – Lamium spp. • Henbit deadnettle – Lamium amplexicaule • Red deadnettle – Lamium purpureum • Spotted deadnettle – Lamium maculatum • Desert Rose – Adenium obesum • Devil's bite – Veratrum viride • Devil's cucumber – Datura stramonium • Devil's darning needle – Clematis virginiana • Devil's nose – Clematis virginiana • Devil's plague – Daucus carota • Devil's snare – Datura stramonium • Devil's trumpet – Datura metel, Datura stramonium • Devil's weed – Datura stramonium • Dewberry • Bristly dewberry – Rubus hispidus • Swamp dewberry – Rubus hispidus • Dindle – Sonchus arvensis • Dogwood – Cornus spp. • American dogwood – Cornus florida • Flowering dogwood – Cornus florida • Japanese flowering dogwood – Cornus kousa • White dogwood – Cornus florida • Drumstick – Moringa oleifera • Pacific dogwood – Cornus nuttallii • Silky dogwood – Cornus amomum • Red osier dogwood – Cornus sericea • Duck retten – Veratrum viride • Duscle – Solanum nigrum • Durian – Durio zibethinus • Durian kura kura – Durio testudinarius • Durian munjit – Durio grandiflorus • Durian pulu – Durio kutejensis • Red durian – Durio dulcis • Dye-leaves – Ilex glabra • Dragon tree • Dragons blood tree – Dracaena cinnabari ==E==

'') • Easter orchid – Cattleya schroederae • Earth gall – Veratrum viride • Elderberry – Sambucus • Elegant lupine – Lupinus elegans • Elephant apple – Dillenia indica • English bull's eye – Rudbeckia hirta • Eucalyptus – Eucalyptus spp. • Evergreen huckleberry – Vaccinium ovatum • Extinguisher moss – Encalypta • Eytelia – Amphipappus ==F==

'') • Fair-maid-of-France – Achillea ptarmica • Fairymoss Azolla caroliniana • Fellenwort – Solanum dulcamara • Felonwood – Solanum dulcamara • Felonwort – Solanum dulcamara • Fennel – Foeniculum vulgare • Ferns • Boston fern or sword fern – Nephrolepis exaltata • Christmas fern – Polystichum acrostichoides • Coast polypody – Polypodium scouleri • Kimberly queen fern – Nephrolepis obliterata • Korean rock fern – Polystichum tsus-simense • Mosquito fern – Azolla caroliniana • Sword ferns – Polystichum spp. • Water fern – Azolla caroliniana • Western sword fern – Polystichum munitum • Feverbush – Ilex verticillata • Feverfew – Tanacetum parthenium • Field forget-me-not – Myosotis arvensis • Fig – Ficus spp. • Common fig – Ficus carica • Flax • European flax – Linum usitatissimum • New Zealand flax – Phormium tenax, Phormium colensoi • Fluxroot – Asclepias tuberosa • Foxglove – Digitalis purpurea • Fumewort • Yellow fumewort – Corydalis flavula ==G==

'') • Gallberry – Ilex glabra • Garget – Phytolacca americana • Garlic • Golden garlic – Allium moly • Wild garlic – Allium canadense • Garlic mustard – Alliaria petiolata • Garlic root – Alliaria petiolata • Germander speedwell – Veronica chamaedrys • Gilliflower • Dame's gilliflower – Hesperis matronalis • Night scented gilliflower – Hesperis matronalis • Queen's gilliflower – Hesperis matronalis • Rogue's gilliflower – Hesperis matronalis • Winter gilliflower – Hesperis matronalis • Golden buttons – Tanacetum vulgare • Golden chain – Laburnum • Goldenglow – Rudbeckia laciniata • Golden Jerusalem – Rudbeckia hirta • Gordaldo – Achillea millefolium • Goose tongue – Achillea ptarmica • Grapefruit – Citrus × paradisi • Grapevine – Vitis • Grass – Poaceae • Bermuda grass – Cynodon dactylon • Green berry nightshade – Solanum opacum • Groundberry – Rubus hispidus • Bristly groundberry – Rubus hispidus • Gutweed – Sonchus arvensis ==H==

'') • Haldi – Curcuma domestica • Harlequin • Rock harlequin – Corydalis sempervirens • Yellow harlequin – Corydalis flavula • Hay fever weed – Ambrosia artemisiifolia, Artemisia trifida • Healing blade – Plantago major • Hedge plant – Maclura pomifera • Hellebore – Helleborus • American white hellebore – Veratrum viride • Big hellebore – Veratrum viride • Black hellebore – Veratrum nigrum • European white hellebore – Veratrum album • False hellebore – Veratrum album, Veratrum viride • Swamp hellebore – Veratrum viride • White hellebore – Veratrum album, Veratrum viride • Hemp – Cannabis spp., specifically Cannabis sativa • Hemp dogbane – Apocynum cannabinum • Hemlock – Tsuga • Hen plant – Plantago major • Herb barbara – Barbarea vulgaris • Hogweed – Ambrosia artemisiifolia • Holly – Ilex spp. • Canada holly – Ilex verticillata • Deciduous holly – Ilex decidua, Ilex verticillata • European holly – Ilex aquifolium • Inkberry holly – Ilex glabra • Meadow holly – Ilex decidua • Michigan holly – Ilex verticillata • Swamp holly – Ilex decidua • Winterberry holly – Ilex verticillata • Honesty – Lunaria annua • Horse cane – Ambrosia trifida • Horseradish – Armoracia rusticana • Horseweed – Ambrosia trifida • Hound's berry – Solanum nigrum • Huckleberry – Vaccinium spp. • Evergreen huckleberry – Vaccinium ovatum • Trailing red huckleberry – Vaccinium parvifolium • Houseleek – Sempervivum tectorum • Hydrangea – Hydrangea macrophylla ==I==

'') • Indian-apple – Datura innoxia • Indian hemp – various genera • Indian hemp – Apocynum cannabinum, Cannabis indica • White Indian hemp – Asclepias incarnata • Indian paintbrush – Castilleja, Castilleja mutis, Asclepias tuberosa • Indian posy – Asclepias tuberosa • Inkberry – Ilex glabra, Phytolacca americana • Ironwood – Acacia estrophiolata • Isle of Man cabbage – Coincya monensis • Itchweed – Veratrum viride • Ivy – Hedera spp. ==J==

'') • Jack-by-the-hedge – Alliaria petiolata • Jack-in-the-bush – Alliaria petiolata • Jasmine – Jasminum officinale • Jewel orchid – Ludisia discolor • Jimsonweed – Datura spp., Datura stramonium • California jimsonweed – Datura wrightii • Western jimsonweed – Datura wrightii • Jointed rush – Juncus kraussii • Jugflower – Adenanthos obovatus • Juneberry – Amelanchier canadensis • Juniper – Various species in the genus Juniperus ==K==

'') • Keek – Rorippa sylvestris • King fern – Ptisana salicina • Kinghead – Ambrosia trifida • Kinnikinnik – Cornus amomum • Kittentail – Veronica bullii • Kiwicha – Amaranthus caudatus • Knotweed (Japanese) – Reynoutria japonica (syn. Fallopia japonica) • Kousa – Cornus kousa • Kudzu – Pueraria montana • Kumarahou – Pomaderris kumeraho ==L==

'') • Lace Aloe – Aloe aristata • Laceflower – Daucus carota • • Lace fern – Asparagus setaceus • Lady's mantle – Alchemilla mollis • Lady's smock – Cardamine pratensis • Lamb's foot – Plantago major • Latanier palm – Phoenicophorium • Laurel magnolia – Magnolia splendens • Lavender – Lavandula • Leek – Allium • Lemon – Citrus × limon • Leopard lily – Lilium catesbaei • Lily of the Nile – Agapanthus praecox • Lettuce – Lactuca sativa • Lily leek – Allium moly • Lilac • Summer lilac – Hesperis matronalis • Little sunflower – Helianthella • Lone fleabane – Erigeron cavernensis • Love-lies-bleeding – Amaranthus caudatus • Love vine – Clematis virginiana • Lupin – Lupinus ==M==

'') • Magnolia – Magnolia • Bracken's Brown Beauty magnolia – Magnolia grandiflora • Galaxy magnolia – Magnolia liliiflora 'Nigra' × M. sprengeri 'Diva' • Jane magnolia – M. liliiflora 'Reflorescens' and M. stellata 'Waterlily' • Kay Parris magnolia – Magnolia grandiflora 'Kay Parris' • Little Gem magnolia – Magnolia grandiflora 'Little Gem' • Moonglow magnolia – Magnolia virginiana 'Moonglow' • Royal Star magnolia – Magnolia stellata 'Royal Star' • Serendipity Ruby magnolia – Magnolia figo 'Serendipity Ruby' • Southern magnolia – Magnolia grandiflora • Stellar Ruby magnolia – Magnolia figo 'Stellar Ruby' • Sweetbay magnolia – Magnolia virginiana • Waterlilly Star magnolia – Magnolia stellata 'Waterlilly Star' • Maize – Zea mays • Mango – Mangifera indica • Maple – Acer • Ash-leaved maple – Acer negundo • Black maple – Acer nigrum • Boxelder maple – Acer negundo • Creek maple – Acer saccharinum • Cutleaf maple – Acer negundo • Elf maple – Acer negundo • Manitoba maple – Acer negundo • Maple ash – Acer negundo • Moose maple – Acer pensylvanicum • Red river maple – Acer negundo • River maple – Acer saccharinum, Acer negundo • Silver maple – Acer saccharinum • Silverleaf maple – Acer saccharinum • Soft maple – Acer saccharinum • Striped maple – Acer pensylvanicum • Sugar maple – Acer saccharum (main use), Acer barbatum, Acer leucoderme, • Swamp maple – Acer saccharinum • Three-leaf maple – Acer negundo • Water maple – Acer saccharinum • White maple – Acer saccharinum • Mesquite – Prosopis • Honey mesquite – Prosopis glandulosa • Screwbean mesquite – Prosopis pubescens • Milfoil – Achillea millefolium • Milkweed – Asclepias, Sonchus oleraceus • Blunt-leaved Milkweed – Asclepias amplexicaulis • Common milkweed – Asclepias syriaca • Horsetail milkweed – Asclepias verticillata • Orange milkweed – Asclepias tuberosa • Swamp milkweed – Asclepias incarnata • Rose milkweed – Asclepias incarnata • Whorled milkweed – Asclepias verticillata • Yellow milkweed – Asclepias tuberosa • Milky tassel – Sonchus oleraceus • Moonflower – Datura innoxia, Datura stramonium • Moosewood – Acer pensylvanicum '') • Petty morel – Solanum nigrum • Morelle verte – Solanum opacum • Mosquito plant – Azolla caroliniana • Mother-of-the-evening – Hesperis matronalis • Mountain mahogany – Betula lenta • Mulberry – Morus • Red mulberry – Morus rubra • White mulberry – Morus alba • Swiss Cheese Plant – Monstera deliciosa ==N==

'') • Native fuchsia – Epacris longiflora • Necklace fern – Asplenium flabellifolium • Neem – Azadirachta indica • Nettle – Urtica dioica • Bull nettle – Solanum carolinense • Carolina horse nettle – Solanum carolinense • Horse nettle – Solanum carolinense • Night-blooming cactus – Hylocereus • Nightshade • American nightshade – Phytolacca americana, Solanum americanum • Bitter nightshade – Solanum dulcamara • Black nightshade – Solanum nigrum, Solanum americanum • Climbing nightshade – Solanum dulcamara • Deadly nightshade – Atropa belladonna • Garden nightshade – Solanum nigrum • Trailing nightshade – Solanum dulcamara • Trailing violet nightshade – Solanum dulcamara • Woody nightshade – Solanum dulcamara • Nodding wakerobin – Trillium cernuum • Northern moonwort – Botrychium boreale • Nosebleed – Achillea millefolium ==O==

'') • Oak tree – Quercus • Algerian Oak – Quercus canariensis • Blue oak – Quercus douglasii • Bur oak – Quercus macrocarpa • California Black Oak Quercus kelloggii • Canyon Live Oak Quercus chrysolepis • Champion oak – Quercus rubra • Coast live oak – Quercus agrifolia • Cork oak – Quercus suber • Dyer's oak – Quercus velutina • Eastern black oak – Quercus velutina • English oak – Quercus robur • Island oak – Quercus tomentella • Mirbeck's oak – Quercus canariensis • Mossycup white oak – Quercus macrocarpa • Northern red oak – Quercus rubra • Pedunculate oak – Quercus robur • Pin oak – Quercus palustris • Red oak – Quercus rubra, Quercus coccinea • Scarlet oak – Quercus coccinea • Scrub oak – Quercus macrocarpa • Sessile oak – Quercus petraea • Spanish oak – Quercus coccinea, Quercus rubra • Spotted oak – Quercus velutina • Swamp oak – Quercus palustris, Quercus bicolor • Swamp Spanish oak – Quercus palustris • Swamp white oak – Quercus bicolor • Valley oak – Quercus lobata • White oak – Quercus alba • Yellowbark oak – Quercus velutina • Obedient Plant – Physostegia virginiana • Olive – Olea europaea • Onion – Allium • Common onion – Allium cepa • Giant onion – Allium giganteum • Nodding onion – Allium cernuum • Tree onion – Allium canadense • Wild onion – Allium canadense • Orange – • Osage orange – Maclura pomifera • Sweet orange – Citrus × sinensis • Wild orange – Maclura pomifera • Orange-root – Asclepias tuberosa • Osage – Maclura pomifera • Osier – Salix; (in North America) Cornus • Red osier – Cornus amomum ==P==

'') • Parsley – Petroselinum crispum • Parsnip – Pastinaca sativa, Daucus carota • Pawpaw – Asimina triloba • Pea – Pisum sativum • Peach – Prunus persica • Peanut – Arachis hypogaea • Pear – Pyrus • Pellitory • Bastard pellitory – Achillea ptarmica • European pellitory – Achillea ptarmica • Wild pellitory – Achillea ptarmica • Penny hedge – Alliaria petiolata • Pepper root – Cardamine concatenata • Petty spurge – Euphorbia peplus • Pigeon berry – Phytolacca americana • Pine – Pinus • Aleppo pine – Pinus halepensis • Apache pine – Pinus engelmannii • Austrian pine – Pinus nigra • Black pine – Pinus thunbergii • Bosnian pine – Pinus heldreichii • Canary Island pine – Pinus canariensis • Chinese red pine – Pinus tabuliformis • Chir pine – Pinus roxburghii • Henry's pine – Pinus henryi • Huangshan pine – Pinus hwangshanensis • Japanese red pine – Pinus densiflora • Khasi pine – Pinus kesiya • Loblolly pine – Pinus taeda • Luchu pine – Pinus luchuensis • Maritime pine – Pinus pinaster • Masson's pine – Pinus massoniana • Merkus pine – Pinus merkusii • Mountain pine – Pinus mugo • Red pine – Pinus resinosa • Scots pine – Pinus sylvestris • Sikang pine – Pinus densata • Stone pine – Pinus pinea • Taiwan red pine – Pinus taiwanensis • Tenasserim pine – Pinus latteri • Tropical pine – Pinus tropicalis • Turkish pine – Pinus brutia • Yunnan pine – Pinus yunnanensis • Pineapple – Ananas • False pineapple – Ananas macrodontes • Pineapple – Ananas comosus • Pistachio – Pistacia • Atlas pistachio – Pistacia atlantica • Chinese pistache – Pistacia chinensis • Mexican pistache – Pistacia mexicana • Persian turpentine tree – Pistacia eurycarpa • Pistachio – Pistacia vera • Terebinth – Pistacia terebinthus • Zebrawood – Pistacia integerrima • Plane (European sycamore) – Platanus acerifolia • Plantain – Plantago • Common plantain – Plantago major • Sea plantain – Plantago maritima • Pleurisy root – Asclepias tuberosa • Poached egg plant – Limnanthes douglasii • Pocan bush – Phytolacca americana • Poison ivy – Toxicodendron radicans • Poisonberry – Solanum dulcamara • Poisonflower – Solanum dulcamara • Poke – Phytolacca americana • Indian poke – Veratrum viride • Pokeroot – Phytolacca americana • Pokeweed – Phytolacca americana • Polkweed – Symplocarpus foetidus • Polecat weed – Symplocarpus foetidus • Poor Annie – Veratrum viride • Poor man's mustard – Alliaria petiolata • Poplar – Populus • Poppy – Papaveraceae • Possumhaw – Ilex decidua • Potato – Solanum tuberosum • Picklyburr – Datura innoxia • Primrose – Primula vulgaris ==Q==

• Qamasa – Amaranthus caudatus • Queen Anne's lace – Daucus carota, Anthriscus sylvestris • Quercitron – Quercus velutina ==R==

'') • Radical weed – Solanum carolinense • Ragweed – Ambrosia • Blood ragweed – Ambrosia trifida • Common ragweed – Ambrosia artemisiifolia • Giant ragweed – Ambrosia trifida • Great ragweed – Ambrosia trifida • Perennial ragweed – Ambrosia trifida • Tall ragweed – Ambrosia trifida • Ragwort – Senecio • Common ragwort – Senecio jacobaea • Hoary ragwort – Senecio erucifolius • Marsh ragwort – Senecio aquaticus • Oxford ragwort – Senecio squalidus • Silver ragwort – Senecio cineraria • Rantipole – Daucus carota • Rapeseed – Brassica napus • Raspberry – Rubus (Idaeobatus) spp. • Black raspberry – Rubus occidentalis • Purple raspberry – Rubus occidentalis • Redbrush – Cornus amomum • Redbud – Cercis spp. • Eastern redbud – Cercis canadensis • Western redbud – Cercis occidentalis • Judas-tree – Cercis siliquastrum • Red ink plant – Phytolacca americana • Redweed – Phytolacca americana • Rheumatism root – Apocynum cannabinum • Rhubarb – Rheum rhabarbarum • Ribwort – Plantago major • Rice • Asian rice – Oryza sativa • African rice – Oryza glaberrima • Roadweed – Plantago major • Rocket – (several genera) • Dame's rocket – Hesperis matronalis • Sweet rocket – Hesperis matronalis • Winter rocket – Barbarea vulgaris • Yellow rocket – Barbarea vulgaris • Rocketcress – Barbarea vulgaris • Rose – Rosa • Baby rose – Rosa multiflora • Dwarf wild rose – Rosa virginiana • Low rose – Rosa virginiana • Multiflora rose – Rosa multiflora • Prairie rose – Rosa virginiana • Rambler rose – Rosa multiflora • Wild rose – Rosa virginiana • Rosemary – Rosmarinus officinalis • Rye – Secale cereale ==S==

'') • Saffron crocus – Crocus sativus • Sanguinary – Achillea millefolium • Saskatoon – Amelanchier alnifolia • Sauce-alone – Alliaria petiolata • Scarlet berry – Solanum dulcamara • Scoke – Phytolacca americana • Scotch cap – Rubus occidentalis • Scrambled eggs – Corydalis aurea • Scurvy grass – Barbarea verna • Serviceberry – Amelanchier • Common serviceberry – Amelanchier arborea • Downy serviceberry – Amelanchier arborea • Shadblow serviceberry – Amelanchier canadensis • Shadblow – Amelanchier canadensis • Shadbush – Amelanchier canadensis • Shrubby mayweed – Oncosiphon suffruticosum • Silkweed – Asclepias syriaca • Swamp silkweed – Asclepias incarnata • Virginia silkweed – Asclepias syriaca • Skunkweed – Symplocarpus foetidus • Snakeberry – Solanum dulcamara • Snowdrop – Galanthus • Sorrel – Oxalis • Redwood sorrel – Oxalis oregana • Speedwell • Corn speedwell – Veronica arvensis • Wall speedwell – Veronica arvensis • Spikenard – Nardostachys jatamansi • Spoolwood – Betula papyrifera • Squaw bush – Cornus amomum • Stammerwort – Ambrosia artemisiifolia • Star-of-Persia – Allium cristophii • Stickweed – Ambrosia artemisiifolia • Strawberry – Fragaria × ananassa • Strawberry tree – Arbutus unedo • Strawberry tree 'Marina' – Madrone – Arbutus 'Marina' • Sugarcane – Saccharum • Swallow-wort • Orange swallow-wort – Asclepias tuberosa • Silky swallow-wort – Asclepias syriaca • Sneezeweed – Achillea ptarmica • Sneezewort – Achillea ptarmica • Sunflower – Helianthus annuus • Sugarplum – Amelanchier canadensis • Soldier's woundwort – Achillea millefolium • Stag bush – Viburnum prunifolium • Swallow-wort • Orange swallow-wort – Asclepias tuberosa • Silky swallow-wort – Asclepias syriaca • Sweet potato – Ipomoea batatas • Sweet potato vine – Ipomoea batatas • Swinies – Sonchus oleraceus • Sycamore – Platanus spp. • Sycamore (California) – Platanus racemosa • Sycamore (Arizona) – Platanus wrighitii • Sycamore (American) – Platanus occidentalis • Sundari (Bangladesh) – Heritiera fomes • Gewa (Bangladesh) – Excoecaria agallocha • Sunflower • Stiff sunflower – Helianthus pauciflorus • Lesser sunflower – Helianthus petiolaris • willow leaf sunflower – Helianthus salicifolius • Stinking corpse flower – Rafflesia arnoldii • Stinkweed – Datura stramonium ==T==

'') • Tansy • Common tansy – Tanacetum vulgare • White tansy – Achillea ptarmica • Wild tansy – Ambrosia artemisiifolia • Tea – Camellia sinensis • Appalachian tea – Ilex glabra • Thimbleberry – Rubus occidentalis • Thimbleweed – Rudbeckia laciniata • Thousand-leaf – Achillea millefolium • Thousand-seal – Achillea millefolium • Tassel flower – Amaranthus caudatus • Tassel weed – Ambrosia artemisiifolia • Thistle – (Several genera) • Annual sow thistle – Sonchus oleraceus • California thistle – Cirsium arvense • Canada thistle – Cirsium arvense • Corn thistle – Cirsium arvense • Corn sow thistle – Sonchus arvensis • Creeping thistle – Cirsium arvense • Cursed thistle – Cirsium arvense • Field sow thistle – Sonchus arvensis • Green thistle – Cirsium arvense • Hard thistle – Cirsium arvense • Hare's thistle – Sonchus oleraceus • Milk thistle – Sonchus oleraceus • Nodding thistle – Carduus nutans L. • Perennial thistle – Cirsium arvense • Prickly thistle – Cirsium arvense • Sharp-fringed sow Thistle – Sonchus asper • Small-flowered Thistle – Cirsium arvense • Spiny sow thistle – Sonchus asper • Spiny-leaved sow Thistle – Sonchus asper • Swine thistle – Sonchus arvensis • Tree sow thistle – Sonchus arvensis • Way thistle – Cirsium arvense • Thorn-apple - Datura spp., Datura stramonium • Chinese thorn-apple – Datura quercifolia • Desert thorn-apple – Datura discolor • Downy thorn-apple – Datura innoxia • Fierce thorn-apple – Datura ferox • Hairy thorn-apple – Datura wrightii • Indian thorn-apple – Datura metel • Oak-leaved thorn-apple – Datura quercifolia • Long-spined thorn-apple – Datura ferox • recurved thorn-apple – Datura innoxia • Sacred thorn-apple – Datura wrightii • Sand thorn-apple – Datura arenicola • Thyme – Thymus, specifically Thymus vulgaris • Tickleweed – Veratrum viride • Tobacco plant – Nicotiana • Tomato – Solanum lycopersicum • Toothwort – Cardamine concatenata • Cutleaf toothwort – Cardamine concatenata • Purple-flowered Toothwort – Cardamine concatenata • Touch-me-not – Impatiens capensis, Impatiens pallida, Mimosa pudica, Cardamine hirsuta • Traveller's joy – Clematis virginiana • Tread-softly – Solanum carolinense • Tree tobacco – Nicotiana glauca • Trillium – Trillium spp. • Western trillium – Trillium ovatum • Western wake robin – Trillium ovatum • White trillium – Trillium grandiflorum • Tuber-root – Asclepias tuberosa • Tulip – Tulipa spp. • Candia tulip – tulipa saxatilis • Tulsi – Ocimum santalum ==U==