n
Hypericum calycinum (great St. John's-wort, Jerusalem star)
n
Goldenrod, the Solidago genus of North American plants with yellow flowers.
n
A bushy wormwood from Europe, sometimes used in the brewing of beer., southernwood, Artemisia abrotanum.
n
A perennial, blue-flowered herb from the eastern United States, Polemonium reptans.
n
A European plant with white flowers, Rabelera holostea
n
Arctotis (syn. Venidium)
n
Any of the genus Ageratum of tropical American herbs, annuals and perennials, from the sunflower family Asteraceae, tribe Eupatorieae; they are sometimes used in floral displays.
n
Lithospermum arvense (bastard alkanet or field gromwell).
n
The plant Alternanthera philoxeroides
n
Saxifraga paniculata (livelong saxifrage)
n
Soleirolia soleirolii, a plant in the nettle family.
n
Either of two closely related genera in the Solanaceae family, Brugmansia and Datura.
n
Colobanthus quitensis, a flowering plant found in the Antarctic, with yellow flowers and a cushion-like growth habit that gives it a mossy appearance.
n
camomile, in genus Anthemis.
n
Polemonium vanbruntiae, a species of flowering plant.
n
Any of many aromatic flowering plants of the genus Artemisia, including wormwood, sagebrush, and tarragon, often used as traditional medicine and flavouring.
n
Any plant of the genus Asarum.
n
Goutweed, Aegopodium podagraria.
n
Nepenthes attenboroughii, a montane species of carnivorous pitcher plant, characterized by its large and distinctive bell-shaped lower and upper pitchers and narrow, upright lid.
n
A plant, Subularia aquatica, with awl-shaped leaves.
n
The houseleek (Sempervivum tectorum).
n
Synonym of pigweed (“the plant Chenopodium album”)
n
A Chinese orchid, Bletilla striata, the pseudobulbs of which are used in traditional Chinese medicine, but which is also widely grown for its ornamental flowers and foliage.
n
A plant native to Eurasia, Neslia paniculata, which has become an invasive weed in North America.
n
A perennial of the genus Balsamorhiza in the sunflower family, native to western North America.
n
Atropa belladonna, deadly nightshade.
n
A herb, Epimedium alpinum, once thought to prevent conception
n
Aremonia agrimonoides, a herbaceous flowering plant in the rose family, Rosaceae.
n
Blue curls, Trichostema dichotomum, native to the eastern US.
n
A flowering plant of the genus Batis (Batis maritima).
n
Hedge bindweed (Calystegia sepium)
n
The plant Crepis barbigera.
n
any plant of herb genus Galium of the madder family with small pointed leaves and hairy stems with small, white or yellow flowers
n
The aromatic plant Monarda didyma or bergamot, native to North America.
n
Galax urceolata, an evergreen herbaceous perennial plant native to the southeastern United States.
n
The plant Acorus calamus, the sweet flag or calamus.
n
A type of plant, Desmodium incanum, native to Central and South America.
n
A species of heather, native to western and central Europe, Erica cinerea; heather-bell
n
Oxalis pes-caprae, a tristylous plant with yellow flowers.
n
(Canada, US) Any plant of the genus Pedicularis (louseworts).
n
black bindweed (Fallopia convolvulus).
n
A flowering herbaceous perennial, Veronica chamaedrys.
n
Viola pedata, an ornamental plant in the Violaceae family.
n
Polygonum aviculare (common knotgrass)
n
Trillium erectum, a perennial plant of North America with deep-red flowers.
n
Birthroot, Trillium erectum
n
Visnaga daucoides (syn. Ammi visnaga); toothpickweed.
n
wood betony (Stachys betonica, now Stachys officinalis)
n
Alternative form of bishop's weed (“Ammi majus, a plant with white lace-like flowers”) [Aegopodium podagraria (ground elder, herb Gerard, bishop's goutweed, goutweed), a common weed of temperate regions.]
n
Alternative form of bishopsweed
n
Any of several perennial herbs, classified in genera Bistorta, Persicaria, or Polygonum, having spikes of pink flowers.
n
Apocynum androsaemifolium (fly-trap dogbane).
n
Another similarly poisonous and medicinal plant, the black false hellebore, Veratrum nigrum.
n
Any of several species of weed of genus Bidens, such as Bidens pilosa, in the family Compositae.
n
Common ragweed (Ambrosia artemisiifolia.)
n
(Scotland) Centaurea cyanus, the cornflower.
n
Chamaelirium luteum of the lily family.
n
Any of the plant of the genus Liatris, native to North America, including Mexico, east of the continental divide.
n
Dactylicapnos, a genus native to Himalayas and mountainous areas of South China, Burma and Vietnam, usually with yellow flowers of similar shape.
n
Centaurea benedicta (formerly usually called Cnicus benedictus), a thistle-like plant native to the Mediterranean.
n
Montia fontana, a herbaceous annual plant in the family Montiaceae, formerly included in the purslane family (Portulacaceae).
n
The plant Amaranthus blitum, purple amaranth.
n
A species of milkweed (Asclepias curassavica L.) with blood-red petals, native to the Central and South American tropics
n
The plant bloodroot, Sanguinaria canadensis.
n
(US, regional) Any of several North American species of Lupinus common in the southwestern US, especially Lupinus texensis and Lupinus subcarnosus.
n
Ajuga genevensis (upright bugle).
n
(botany) Synonym of creeping gromwell
n
Omphalodes verna, an herbaceous perennial rhizomatous plant of the genus Omphalodes.
n
Ageratum houstonianum (blueweed).
n
Echium vulgare (viper's bugloss).
n
Any of various plants of the genus Aeschynanthus.
n
The perennial herb Nitrophila occidentalis, western niterwort
n
Any of several plants having a similar appearance, especially Anthephora or Callistemon.
n
Gillenia trifoliata, a herbaceous perennial in the Rosaceae family, native to eastern North America, with pale pink flowers.
n
Any species in the genus Sansevieria (which many recent references treat as part of the genus Dracaena), most notably the mother-in-law's tongue.
n
Saxifrage (Saxifraga spp.)
n
The plant Gastrolobium laytonii.
n
The plant Crepis setosa.
n
A species of rockcress, Arabis scabra, found originally only in the Avon Gorge
n
A plant of the genus Psathyrotes of annual and perennial forbs and low subshrubs native to dry areas of southwestern North America.
n
Senecio sarracenicus, a species of flowering plant.
n
Any of several yellow-flowered shrubs of the family Fabaceae, in the tribe Genisteae, including genera Cytisus, Genista, and Spartium, with long, thin branches and small or few leaves.
n
Any of various plants, of the genus Orobanche, that are parasitic on the roots of other plants.
n
Any of various plants of the genus Gutierrezia.
n
wild thyme (Thymus serpyllum)
n
A flowering annual plant Rudbeckia triloba; the state flower of Maryland.
n
A species of figwort or Scrophularia, (Scrophularia vernalis), and other species of the same genus, mostly perennials with inconspicuous coarse flowers.
n
Any plant supposed to heal bruises, such as soapwort or comfrey.
n
Alternative form of buffalobur [Solanum rostrum]
n
Ajuga, a group of herbs used for ground cover; bugle
n
The plant Dicoria canescens in the family Asteraceae.
n
A plant, bishop's weed, Ammi majus.
n
(biblical) A plant referred to in the story of Moses as growing along the banks of the Nile, which is believed to be the papyrus (Cyperus papyrus).
n
Any of the species of biennial thistles in the genus Arctium.
n
Bassia scoparia (syn. Kochia scoparia), a large annual herb in the family Chenopodiaceae, native to Eurasia, introduced to many parts of North America.
n
(obsolete) Rupturewort, Herniaria glabra.
n
Alternative form of burrweed [Any of various plants in the genus Soliva.]
n
Linaria vulgaris, a flowering plant native to Europe and northern Asia; yellow toadflax; common toadflax.
n
Any of several Eurasian herbs, of the genus Petasites, having dense clusters of often purple flowers.
n
The butterfly weed (Asclepias tuberosa).
n
Asclepias tuberosa, native to most of North America, except for the northwest.
n
Asclepias tuberosa, a species of milkweed native to eastern North America, with clustered orange or yellow flowers.
n
Any plant of the insectivorous genus Pinguicula.
n
The plant Rutidosis leptorrhynchoides.
n
Any of several plants of the genera Diodia and Diodella, of the madder family.
n
Urena lobata, an annual undershrub with pink flowers, widely distributed as a weed in the tropics of both hemispheres including Brazil and Southeast Asia.
n
Alternative form of Caesar weed [Urena lobata, an annual undershrub with pink flowers, widely distributed as a weed in the tropics of both hemispheres including Brazil and Southeast Asia.]
n
The cobra lily, Darlingtonia californica.
n
A popular flowering garden plant, Eschscholzia californica, native to the south-western United States, and other similar plants in genus Eschscholzia.
n
Pseudognaphalium californicum
n
A common European heath/heather of species Calluna vulgaris.
n
Some flowering plants of the genus Lychnis.
n
Corn thistle (Cirsium arvense).
n
The pondweed Elodea canadensis.
n
(US) Rumex hymenosepalus, a species of dock native to southwestern North America with edible red stems and taproots containing tannin.
n
Lyreleaf sage or wild sage (Salvia lyrata).
n
Linaria vulgaris, the common toadflax.
n
The plant Taraxacum officinale.
n
Arctotheca populifolia, a species of composite plant.
n
An erect, biennial spurge native to southern Europe, northern Africa, and southwest Asia into central Asia, Euphorbia lathyris
n
The plant Arctotheca calendula
n
Argemone mexicana, a species of hardy poppy found in Mexico, with bright yellow latex.
n
Any of about 30 species of thistles in the genus Carlina and certain other closely related genera.
n
A low-growing North American weed (Mollugo verticillata).
n
Smilax (syn. Nemexia), herabaceous vines of North America
n
The plant shepherd's purse
n
The O. sinensis fungus and host caterpillar body used in traditional Chinese medicine.
n
The lesser celandine (Ficaria verna, formerly Ranunculus ficaria)
n
An ornamental amaranth of the genus Celosia
n
Centaurea, a genus in the Asteraceae containing species sometimes called centaury
n
Cudweed (Gnaphalium), used to prevent or cure chafing.
n
A perennial herb, Schoenoplectus americanus, native to the Americas, used as a model organism in the study of salt marsh ecology.
n
Chamaeleon, a genus of thistle plants with at most a single currently accepted species Chamaeleon macrophyllus, most of whose former species are now in Carlina.
n
Bedstraw (Galium verum).
n
The plant Euphorbia hypericifolia.
n
Holosteum - jagged chickweed
n
A water chinquapin, the water plant Nelumbo lutea, American lotus.
n
Ruellia macrantha, an ornamental flowering plant of Brazil.
n
sweetroot, any of several plants in the genus Osmorhiza
n
Any of several North American plants of the genus Polanisia
n
A North American herb (Conopholis americana) that is parasitic on the roots of oak
n
Echinocereus triglochidiatus, a species of hedgehog cactus with red flowers.
n
clary sage (Salvia sclarea)
n
Salvia sclarea, a biennial or short-lived herbaceous perennial.
n
Galium aparine, a herbaceous annual bedstraw of the family Rubiaceae.
n
Any of several shrubs in the former genus Cowania (now part of Purshia) in the family Rosaceae, native to the western US and northern Mexico.
n
The plant Gastrolobium bennettsianum.
n
A carnivorous plant native to northern California and southern Oregon, Darlingtonia californica
n
Any of the coarse composite weeds of the genus Xanthium, with a prickly fruit.
n
(dialectal, UK) Epilobium hirsutum, a water-loving willowherb native to Europe.
n
A smooth herb, Actaea racemosa, marketed for medicinal use.
n
Corydalis flavula (yellow harlequin)
n
A bitter American herb of the bloodwort family (Haemodoraceae), with small yellow or white flowers in a long spike.
n
Any of various flowering plants of the genus Myrsine.
n
Homogyne alpina (alpine coltsfoot or purple colt's-foot).
n
Bistorta officinalis (syn. Persicaria bistorta), Easter giant
n
The herb Eupatorium perfoliatum, also known as thoroughwort. Often used by herbalists as a stimulant, febrifuge, and laxative.
n
Cephalanthus occidentalis
n
Cerastium - mouse-ear chickweed
n
The most common and well-known species of dandelion (Taraxacum officinale)
n
Portulaca oleracea, an annual succulent.
n
Synonym of soft rush, Juncus effusus.
n
Sonchus oleraceus, smooth sow thistle, native to western Eurasia.
n
Achillea millefolium, a flowering plant widespread in the temperate Northern Hemisphere, formerly and sometimes used to stanch the flow of blood.
n
Silphium laciniatum, native to eastern North America.
n
Heuchera sanguinea, a species of herbaceous perennial in the family Saxifragaceae, native to North America.
n
Russelia equisetiformis in the plantain family, Plantaginaceae
n
The plant Jatropha multifida.
n
A perennial herb, Cirsium arvense.
n
Any of various flowering plants in the genus Onopordum of the family Asteraceae, especially Onopordum acanthium.
n
mullein (Verbascum thapsus)
n
Cicuta virosa, type species of this genus.
n
The white bryony, Bryonia alba.
n
Primula deorum, a flowering plant known as God's cowslip and rila cowslip
n
Platystemon californicus, an ornamental flowering plant in the Papaveraceae family, found growing wild throughout the American southwest and especially on the Pacific Coast.
n
A perennial flowering plant, Ranunculus repens.
n
Field bindweed (Convolvulus arvensis, Convolvulaceae).
n
Wild thyme, Thymus serpyllum, which has a similar habit.
n
Cardamine diphylla, a spring woodland plant native to North America.
n
Cruciata laevipes, the smooth bedstraw.
n
The plant Koeberlinia spinosa.
n
A crawling leguminous vine, Securigera varia, which is native to Eurasia and Africa but widely planted elsewhere as a ground cover, where it can become an invasive weed.
n
A perennial herbaceous plant, Lotus corniculatus, of temperate Eurasia and northern Africa.
n
Any of various plants of the genus Riccia.
n
ragged robin (Silene flos-cuculi, syn. Lychnis flos-cuculi)
n
Gnaphalium, a plant genus with species in Eurasia and the Americas
n
The columbine Aquilegia vulgaris.
n
Grindelia squarrosa, a small North American biennial or short-lived perennial plant with yellow flowers.
n
A perennial herb with silvery foliage that smells like curry powder, Helichrysum italicum
n
Luzula arcuata, a flowering plant in the family Juncaceae.
n
(chiefly Isle of Man) The ragwort, the national flower of the Isle of Man, which has a large stalk.
n
dame's rocket, Hesperis matronalis.
n
A member of a species of poisonous perennial flowering plants, Toxicoscordion venenosum (formerly Zigadenus venosus), easily confused with the edible camas, whose bulbs (rhizomes) look like, but do not smell like, like onion.
n
(archaic) The deadly nightshade.
n
Alternative form of death camas [A member of a species of poisonous perennial flowering plants, Toxicoscordion venenosum (formerly Zigadenus venosus), easily confused with the edible camas, whose bulbs (rhizomes) look like, but do not smell like, like onion.]
n
A kind of sedge, the heath club-rush.
n
blazing star (Chamaelirium luteum), native to North America.
n
The plant mandrake, especially when used in black magic.
n
The orange hawkweed, Pilosella aurantiaca.
n
A vine cultivated as a houseplant, pothos (Epipremnum aureum).
n
Pallenis hierochuntica, a sunflower native to the Mediterranean.
n
Anthemis cotula, an annual plant native to Europe and North Africa.
n
Arisaema dracontium, green dragon, a herbaceous perennial native to North America.
n
A perennial herb of Europe and Asia, Bistorta officinalis (syns. Persicaria bistorta, Polygonum bistorta), formerly used as an astringent.
n
Any of several species of plants with leaves of a dusty appearance: Centaurea cineraria, Jacobaea maritima, Artemisia stelleriana, Spyridium parvifolium, and Silene coronaria, syn. Lychnis coronaria.
n
A plant, the scouring rush.
n
A plant of the species Dicentra cucullaria, native to eastern North America and the Columbia River basin.
n
A night-blooming cereus, of the species Epiphyllum oxypetalum.
n
A plant in the taxonomic genus Equisetum (horsetails); Equisetum scirpoides.
n
woad-waxen, Genista tinctoria
n
Micranthes virginiensis, native to eastern North America.
n
A type of cactus grown as an ornamental plant, Schlumbergera gaertneri.
n
Aquilegia canadensis, native to eastern North America.
n
An edible flower from the plant Acmella oleracea, so named for generating a buzzing or electrified sensation in the mouth, due to the presence of spilanthol.
n
Any of the genus Circaea of low inconspicuous perennial plants, found in damp, shady places.
n
(obsolete) common sainfoin (Onobrychis sativa)
n
The eyebright, Euphrasia officinalis.
n
Mentzelia pumila, and other species of genus Mentzelia.
n
Baptisia australis, native to central and eastern North America.
n
Any of the several flowering plants of the genus Camelina, especially Camelina sativa, which is cultivated for oil.
n
Any plant in the genus Veratrum.
n
Synonym of knobweed (“Hyptis capitata”)
n
Maianthemum dilatatum, the snakeberry and two-leaved Solomon's seal, native to western North America and Asia across the Kamchatka Peninsula, Japan, and Korea
n
A Northern European flower, Tripleurospermum maritimum
n
The chaffweed (Centunculus minimus).
n
Ammi majus (bishop's flower)
n
A plant of the species Parthenium hysterophorus, native to Central America, considered invasive in Africa, India, Australia
n
The flowering plant Thlaspi arvense.
n
(US) A wildflower of western North America, Clarkia amoena, that blooms in late spring and early summer
n
Other plants traditionally used to treat the type of bacterial infection known as a felon, such as celandine
n
Urtica dioica subsp. galeopsifolia, a herbaceous perennial plant found in Europe, having long narrow leaves and covered in fine, dense, non-stinging hairs.
n
A plant of the genus Triosteum.
n
A European medicinal herb (Eryngium capestre) of the carrot family.
n
A white-flowered Arctic heather, Cassiope tetragona.
n
The plant rosebay willowherb often found on disturbed soil, bomb sites etc.
n
A perennial herbaceous plant (Epilobium angustifolium or Chamaenerion angustifolium) in the willowherb family Onagraceae.
n
Houttuynia cordata, a herbaceous perennial plant sometimes used as a herb.
n
(Scotland, rare) common ragwort (Jacobaea vulgaris, syn. Senecio jacobaea).
n
Haplomitrium hookeri (Hooker's flapwort)
n
Daphne gnidium, a poisonous evergreen shrub from the Mediterranean region with dense dark-green foliage and fragrant white flowers.
n
Butomus umbellatus, native in Eurasia, considered invasive in North America.
n
Any of the genus Tiarella of wildflowers and garden plants in the saxifrage family.
n
Apium nodiflorum (synonym Helosciadium nodiflorum), a flowering plant native to western Europe, the leaves somewhat resembling those of watercress.
n
The alga Dictyota dichotoma
n
Carex vulpinoidea, native to North America.
n
Acalypha hispida, chenille plant.
n
A fragrant herb in the rue family, Dictamnus albus
n
(California) Any of various other, similar species with similar uses.
n
Stratiotes aloides, a European aquatic plant with sword-shaped leaves.
n
Arisarum vulgare, a species of plant, native to Asia and Europe.
n
An American species of rockrose (Crocanthemum canadense, syn. Helianthemum canadense).
n
The teasel (Dipsacus fullonum) whose burs were once used by fullers in dressing cloth.
n
A thorny evergreen shrub, with yellow flowers, Ulex gen. et spp., of which Ulex europaeus is particularly common upon the plains and hills of Great Britain and Ireland.
n
The flowering plant Lobelia inflata.
n
One of several species of Cyperus sedges with aromatic rhizomes.
n
A woodland herb (Alliaria petiolata) that has a garlic-like aroma, considered highly invasive in New World.
n
A white myco-heterotrophic herb, Monotropa uniflora, of the family Ericaceae.
n
Mohavea confertiflora, a flower native to the Sonoran and Mojave deserts.
n
The plant Euphorbia marginata.
n
A flowering plant (Petasites japonicus), native to Asia.
n
The hosta or plantain lily.
n
An arctic-alpine flowering plant, Ranunculus glacialis
n
gladiolus (flowering plant)
n
rock samphire (Crithmum maritimum)
n
Globularia vulgaris, native to western Europe, sometimes used as a laxative.
n
Any of the genus Gnaphalium of flowering plants, the cudweeds.
n
Galega officinalis (French lilac, Italian fitch, Spanish sainfoin).
n
Croton capitatus, the hogwort.
n
The plant Orontium aquaticum.
n
A plant, Rudbeckia laciniata
n
Any of the flowering plants of the genus Euthamia.
n
Any of the genus Pyrrocoma of North American plants in the daisy family, with yellow flowers.
n
Galium aparine (cleavers, clivers, catchweed, sticky willy)
n
Euphorbia rigida (upright myrtle spurge).
n
A ground elder, Aegopodium podagraria.
n
Goutweed, Aegopodium podagraria.
n
The herb wormwood (Artemisia absinthium), which is used in the production of absinthe and vermouth, and as a tonic.
n
Gutierrezia (snakeweeds, matchweeds).
n
Lobelia siphilitica, native to almost all of eastern and central North America.
n
Eutrochium purpureum, native to eastern North America.
n
Glechoma hederacea, an aromatic, perennial, evergreen creeper of the mint family Lamiaceae.
n
Glechoma hederacea, an aromatic, perennial, evergreen creeper of the mint family Lamiaceae
n
Any of various plants in the genus Grindelia.
n
Sonchus arvensis, a terrestrial plant.
n
A plant, Globularia alypum, a violent purgative, found in Africa.
n
A perennial plant, Knautia arvensis, commonly known as field scabious.
n
Speedwell, Veronica officinalis.
n
Lycopus europaeus, a labiate plant.
n
A handflower (Chiranthodendron pentadactylon).
n
Common sow thistle (Sonchus oleraceus).
n
Any dandelion-like flower of the genera Leontodon, Scorzoneroides, and others in subtribe Hypochaeridinae, in the family Asteraceae.
n
The plant Gastrolobium bilobum.
n
Many of the species in the genus Erica
n
Juncus squarrosus, a rush in the family Juncaceae.
n
An evergreen plant, Calluna vulgaris, with spiky leaves and small purple, pink, or white flowers.
n
a plant of species Erica cinerea native to western and central Europe,; bell heather
n
Conium, either Conium maculatum or Conium chaerophylloides.
n
Any weed of the genus Galeopsis in the Lamiaceae family.
n
Any of various plants of the genus Eupatorium.
n
Bergenia, a non-succulent Asian plant genus in family Saxifragaceae.
n
Sempervivum (houseleeks, syn. Jovibarba) spp.
n
Lamium amplexicaule, an annual plant with pink or purple flowers and deeply crenate leaves.
n
An Old World plant (Paris quadrifolia) related to the trillium.
n
Calamintha nepeta, a perennial herb in the mint family.
n
Any plant of species Lomatium utriculatum
n
An umbelliferous plant, of genus Heracleum, most species of which are phototoxic.
n
Croton capitatus, an annual plant.
n
A perennial plant, Cryptotaenia canadensis, sometimes cultivated as a vegetable.
n
Any of the genus Cerinthe of flowering plants that attract bees.
n
A plant, Scutellaria galericulata, the common skullcap.
n
Any plant of the genus Ballota.
n
The plant Gastrolobium polystachyum.
n
Any of several plants of the genus Glaucium
n
A strong-scented labiate plant (Collinsonia canadensis) with large leaves and yellowish flowers.
n
Any of various flowering plants of the genus Conyza.
n
A biennial weed (Cynoglossum officinale) with soft tongue-shaped leaves and an offensive odour. It bears nutlets covered with barbed or hooked prickles.
n
Thelypodium howellii subsp. spectabilis, a rare plant subspecies of the western United States.
n
The North American flowering plant Amsonia hubrichtii.
n
trumpet vine, Campsis radicans
n
The sidesaddle flower, or common American pitcher plant (Sarracenia purpurea).
n
(obsolete, US) The sagebrush (Artemisia spp.).
n
Timmia megapolitana, a species of moss.
n
Gaillardia pulchella (Indian blanket, firewheel), a flowering plant of southern US, from Arizona to Florida, and northern Mexico.
n
Soleirolia soleirolii (angel's tears), a plant in the nettle family.
n
A house plant, Oxalis tetraphylla.
n
Any of certain species of the genus Vernonia of forbs and shrubs.
n
Galeopsis ladanum, red hemp-nettle.
n
Veratrum viride, a toxic North American plant.
n
A biannual plant distributed across Europe and North America (Tragopogon pratensis)
n
Alliaria petiolata, the garlic mustard
n
The plant Viola tricolor
n
A flowering plant of the genus Polemonium.
n
A succulent plant, Crassula ovata.
n
A large, herbaceous perennial plant, Fallopia japonica, native to Asia; it is a highly invasive colonizer outside of its native territory.
n
The plant goldenseal (Hydrastis canadensis).
n
A flowering plant Lychnis chalcedonica (syn. Silene chalcedonica) of the family Caryophyllaceae
n
(US) Impatiens, especially Impatiens capensis and Impatiens pallida.
n
(US) A poisonous plant of the Datura stramonium species, part of the nightshade (Solanaceae) family. A hallucinogen occasionally ingested by those looking for a cheap high.
n
Any plant of the genus Eutrochium, native to eastern North America.
n
Viola tricolor (heartsease, wild pansy, pansy, et al.)
n
A composite herb, Tragopogon pratensis.
n
A trailside plant, Persicaria virginiana, with a long seedstalk bearing adhesive seeds.
n
(obsolete) Aster linosyris, a European plant with yellow flowers.
n
Eupatorium leucolepis, a herbaceous perennial plant of the Asteraceae.
n
Platysace cirrosa, a Western Australian perennial herb.
n
(dialectal) white mustard (Sinapis alba)
n
Any of the genus Eysenhardtia of flowering plants in the legume family Fabaceae.
n
Ambrosia trifida, a form of ragweed.
n
especially Centaurea nigra.
n
The plant butcher's broom.
n
Alternative form of knapweed [Any of various common weeds of the genus Centaurea]
n
Collinsonia canadensis, a perennial medicinal herb in the mint family, Lamiaceae.
n
Any of several plants of the genus Polygonum, with jointed stems and inconspicuous flowers
n
Trifolium repens (white clover).
n
Galium verum (yellow bedstraw).
n
A herb, the thrift (Armeria maritima) that grows in dense tufts.
n
ribbongrass, Phalaris arundinacea
n
The invasive perennial plant of the knotweed family, Persicaria maculosa.
n
A boreal quillwort, Isoetes lacustris, native on both sides of the northern Atlantic Ocean.
n
The water pepper, an aquatic plant of the family Polygonaceae.
n
The plant Arnoseris minima.
n
Chenopodium album, of the goosefoot family, sometimes used as a potherb
n
The flowering plant Plantago lanceolata.
n
Liparis liliifolia, an orchid of parts of temperate eastern North America.
n
The plant Phyllanthus urinaria
n
Euphorbia esula, a spurge native to Eurasia.
n
Polypodium scouleri, native to western North America
n
Lithospermum ruderale, a flowering plant in the borage family, native to western North America.
n
Hylotelephium telephium, a succulent perennial ground cover native to Eurasia.
n
Zantedeschia aethiopica, a plant species in the family Araceae.
n
Common heather (Calluna vulgaris)
n
Eustoma grandiflorum, now Eustoma exaltatum subsp. russellianum, a flowering plant.
n
The houseleek (Sempervivum spp.)
n
The flowering plant Cleretum bellidiforme.
n
Any of several plants indigenous to the western United States, of genus Oxytropis or Astragalus.
n
A flowering vine with large, hollow seedpod and round seeds with a heart-shaped mark; Cardiospermum halicacabum
n
moonwort (Botrychium lunaria)
n
Verbascum thapsus (in family Scrophulariaceae, bullock's lungwort, cow's lungwort or clown's lungwort)
n
Any plant of the same family (Rubiaceae) as the madder.
n
Synonym of hoodwort (“the plant Scutellaria galericulata”)
n
Any of certain alyssums.
n
The yellow bedstraw (Galium verum).
n
(Canada, US, now regional) Either of two ericaceous plants, the creeping snowberry or the checkerberry.
n
Any plant of the order Malvaceae, the mallows.
n
Cheirolophus crassifolius, a flowering plant in the Asteraceae family, endemic to Malta.
n
A flowering plant Lychnis chalcedonica (syn. Silene chalcedonica) of the family Caryophyllaceae
n
The plant Centaurea melitensis.
n
Conyza canadensis, an annual weed also known as horseweed and Canadian fleabane;
n
An oxeye daisy (Leucanthemum vulgare).
n
Any of the genus Marrubium of bitter aromatic plants; horehound.
n
A blue-to-purple gentian native to Eurasian marshlands, Gentiana pneumonanthe.
n
The plant Crepis paludosa.
n
A small, white-flowered plant, of the genus Apium, that grows in marshy habitats.
n
Synonym of broomweed (“plants of Gutierrezia genus”)
n
Amaranthus blitoides (prostate amaranth, mat amaranth)
n
stinking chamomile, Anthemis cotula.
n
Colchicum autumnale, a fall-blooming colchicum.
n
The plant Saxifraga granulata.
n
A plant (any plant of genus Thalictrum), also known as thalictrum
n
A Eurasian perennial flowering plant of Rosaceae family, Filipendula ulmaria.
n
Any of several poppy-like plants of the genus Meconopsis, most of which are found in the Himalayas
n
Synonym of bellwort (“plant of genus Uvularia”)
n
Hylotelephium telephium, a succulent perennial ground cover native to Eurasia.
n
Persicaria perfoliata; Polygonum perfoliatum; Asiatic tearthumb; kudzu of the North.
n
Common yarrow, Achillea millefolium.
n
Principally of the genus Asclepias in order Gentianales, family Apocynaceae
n
Any of more than 500 species of flowering plants of the genus Polygala that are used as a food source by the larvae of some members of the Lepidoptera order.
n
The plant Soleirolia soleirolii, baby's tears.
n
Winter purslane, Montia perfoliata, now Claytonia perfoliata
n
Any of several plants in the tribe Eupatorieae, especially Ageratina riparia and members of the genus Conoclinium.
n
A European vine, Lysimachia nummularia, having yellow flowers; creeping Jenny, creeping Charlie.
n
Any of the tropical pitcher plants in the genus Nepenthes.
n
Any of various plants in the genus Mimulus.
n
(countable) Any of various poisonous plants, of the genus Aconitum, with blue or white flowers in the shape of a hood.
n
A hairy Old World plant of the borage family, genus Nonea.
n
Frasera speciosa, a perennial herb of the western US, belonging to the gentian family.
n
The corn marigold, Glebionis segetum.
n
The flowering plant Phlox stolonifera.
n
Saxifraga bryoides, a saxifrage found in the Arctic tundra and on European mountain ranges at high altitudes.
n
Soleirolia soleirolii, a plant in the nettle family.
n
Thymus praecox, a variety of thyme.
n
An arctic-alpine flowering plant of the species Dryas octopetala
n
The ironwort plant (of genus Sideritis)
n
sweet scabious (Sixalix atropurpurea, syn. Scabiosa atropurpurea)
n
A slender European weed (Galium cruciata); the crossweed.
n
Any of several aromatic plants of the genus Artemisia native to Europe and Asia.
n
Draba verna, the shadflower.
n
Marsh pennywort, herbs of genera Hydrocotyle or Centella.
n
An American annual weed (Veronica peregrina), with small white flowers and a roundish pod.
n
Genista anglica, a shrubby flowering plant of the family Fabaceae.
n
The plant Gastrolobium glaucum.
n
small-leaved nettle (Dendrocnide photinophylla).
n
A plant of the genus Jatropha.
n
Orontium aquaticum, a flowering plant.
n
Vernonia noveboracensis, a plant in the aster family, native to much of the eastern United States.
n
The flowering plant Dracaena trifasciata, mother-in-law's tongue.
n
Belladonna or deadly nightshade, Atropa belladonna.
n
The plant Saxifraga umbrosa.
n
Luzula confusa, a flowering plant in the family Juncaceae.
n
Shortia galacifolia, a rare plant of the Southern Appalachians in the family Diapensiaceae.
n
Achillea millefolium or common yarrow, a flowering plant native to temperate regions of the Northern Hemisphere.
n
Pilosella aurantiaca, a flowering plant of the family Asteraceae, native to alpine regions of central and southern Europe.
n
Asclepias tuberosa, a milkweed native to eastern North America, with clustered orange flowers.
n
Ligusticum porteri, a perennial herb found in parts of the Rocky Mountains and northern Mexico.
n
Heteranthemis viscidehirta
n
(botany) Synonym of locoweed.
n
Impatiens pallida, native to eastern North America.
n
The cowslip (Primula veris)..
n
knawel (Scleranthus spp.)
n
wild thyme (Thymus serpyllum)
n
Achillea ptarmica (European pellitory, bastard pellitory, wild pellitory, sneezewort.
n
Parietaria judaica (spreading pellitory)
n
A variety of toadflax having five spurs instead of one.
n
Virginian pennywort (Obolaria virginica)
n
The common pillwort of Europe (Pilularia globulifera).
n
Any of the genus Pontederia of tristylous aquatic plants with large waxy leaves, succulent stems, and a thick pad of fibrous roots.
n
A low spreading plant with yellow flowers and clover-like leaves, Oxalis stricta.
n
Any flowering plant of the genus Salicornia (family Amaranthaceae).
n
Any plant of the genus Sisyrinchium.
n
Chenopodium album, white goosefoot
n
Ficaria verna (formerly Ranunculus ficaria), lesser celandine, a plant in the buttercup family.
n
Silphium laciniatum, a flowering plant in the aster family.
n
Great burnet (Sanguisorba officinalis)
n
A plant of the species Chamaeleon gummifer (syns. Atractylis gummifera, Carlina gummifera), native to southern Europe.
n
Matricaria discoidea, wild chamomile.
n
Alternative form of pineapple weed [Matricaria discoidea, wild chamomile.]
n
A low, bushy, nearly leafless herb (Hypericum sarothra), common in sandy soil in the eastern United States.
n
The pale bridewort (Spiraea alba).
n
(California) A sage with large red, pitcher-shaped flowers, Salvia spathacea, native to California and grown there for its fragrance and its tolerance of both drought and shade.
n
Carex plantaginea (in Carex subg. Carex), growing in meadows in the eastern US.
n
The tree Comocladia dodonaea, whose exudate can cause contact dermatitis.
n
The European hemlock Conium maculatum, an extremely poisonous plant in the carrot family, Apiaceae
n
A woody vine plant in the family Anacardiaceae (Toxicodendron radicans or Rhus toxicodendron), well-known for its ability to produce urushiol, a skin irritant that causes an itching rash for most people.
n
Any of various poisonous plants of the genus Astragalus.
n
Psoralea esculenta, the prairie turnip.
n
(most commonly) Potamogeton, a diverse and worldwide genus
n
A plant found in fresh to brackish waters with long, threadlike leaves, Zanchellia palustris
n
Any of various plants in the genus Stachytarpheta of the verbena family.
n
Dudleya farinosa, a prized ornamental of highly variable, often spectacular appearance, native to the coast of northern California and Oregon.
n
The plant Parthenium integrifolium.
n
Ceratophyllum muricatum, a freshwater plant, of cosmopolitan distribution.
n
Any species in the genus Argemone which is prickly
n
Salsola kali (syn. Kali turgidum), a coastal, halophilic, annual plant, with succulent, spiny leaves.
n
Mentha pulegium, the European pennyroyal.
n
spoon-leaf cudweed (Gamochaeta purpurea)
n
Comarum palustre (syn. Potentilla palustris), a waterside shrub.
n
Asclepias cordifolia, native to the west coast of the United States, the heartleaf milkweed.
n
The plant Tridens flavus, a robust North American perennial bunchgrass.
n
purslane tree (Portulacaria afra)
n
Houstonia caerulea, a perennial plant of North America, with pale blue flowers.
n
Eutrochium purpureum, sweet joe-pye weed.
n
The wild parsnip, Pastinaca sativa.
n
The herbaceous plant Galinsoga parviflora
n
The flowering plant Nigella damascena.
n
A plant of the genus Ambrosia. These weeds are particularly noted for producing pollen which people with hay fever are allergic to.
n
Poisoning by ingestion of seeds of the wild radish, Raphanus raphanistrum.
n
Euphorbia albomarginata.
n
Any plant of the genus Astragalus.
n
Lobelia cardinalis, native from Quebec to California and at higher elevations through Central America to Colombia.
n
Trillium sessile, native to the midwestern United States, with more isolated populations in nearby states.
n
A kind of milkweed (Asclepia curassavica), with red flowers, formerly used in medicine.
n
Red poppy (Papaver rhoeas).
n
A water plant, the cattail.
n
Any of various species of small shrubs making up the genus Ononis, especially Ononis repens, which has pink flowers.
n
Mesembryanthemum spp., which plants can revive within a short period of time after a drought
n
The false rhubarb (Rheum rhaponticum)
n
The plant Jeffersonia diphylla.
n
Potamogeton epihydrus, a perennial aquatic plant.
n
Pilea pumila, a herb of the nettle family with a smooth, juicy, pellucid stem.
n
Chasmanthium latifolium, native to central and southeastern United States.
n
Any of the family Podostemaceae of aquatic herbs.
n
Tall thistle, Cirsium altissimum.
n
The plant Plantago major, the greater plantain.
n
The sand leek, Allium scorodoprasum
n
Consolida regalis, an annual herbaceous plant.
n
Pavonia lasiopetala (Malvaceae), Texas swampmallow.
n
Suaeda nigra (bush seepweed, Mojave sea-blite)
n
The flowering plant Silene coronaria (syn. Lychnis coronaria).
n
Streptopus lanceolatus, native to much of cooler North America.
n
(US, California) Any of various composite plants which secrete resins or have a resinous smell; for example, several species in the genus Silphium in the composite family.
n
A plant in the taxonomic genus Equisetum (horsetails); Equisetum hyemale.
n
The plant Saxifraga stolonifera.
n
Thalictrum thalictroides, native to woodlands in eastern North America.
n
A West Indian plant (Alternanthera polygonoides), somewhat resembling burstwort.
n
(Australia) Salsola australis
n
Any of a number of perennial herbs in the genus Artemisia which have the aromatic gray or silver foliage of the sagebrushes, but are not shrubby enough to be termed brush.
n
The plant Hypericum hypericoides.
n
of family Primulaceae (primroses)
n
Plants of genus Sarcocornia
n
Polygonella myriophylla, a rare flowering plant in the knotweed family.
n
An Asian plant (Seriphidium cinum, syn. Artemisia cina), related to wormwood, which has been used since ancient times as a vermifuge due to its santonin content.
n
The related Sisyrinchium striatum.
n
Any of several plant species of genus Echites, in the milkweed family, found in the West Indies
n
Alternative spelling of saw-wort [Any plant of the composite genus Serratula.]
n
Any of two species of the amaranth genus Haloxylon: Haloxylon ammodendron (syn. Haloxylon aphyllum; black saxaul) and Haloxylon persicum (white saxaul), found in sandy habitats from Egypt to Mongolia and China.
n
Convolvulus scammonia, a twining perennial bindweed native to the eastern part of the Mediterranean basin, whose juice has been used in medicine as scammonium.
n
scorpionweed (genus Phacelia)
n
The plant Cytisus scoparius.
n
The perennial flowering plant Galium sylvaticum.
n
cleavers (Galium aparine).
n
Mertensia maritima, a flowering plant in the genus Boraginaceae.
n
A variety of pearlwort, Sagina procumbens
n
Any of various plants in the genus Suaeda; sea blite.
n
A plant of the species Polygala senega
n
The houseleek (Sempervivum tectorum), a common plant of Europe.
n
(medicine, archaic) The fibrous aromatic root of the Virginia snakeroot (Aristolochia serpentaria).
n
Virginia waterleaf (Hydrophyllum virginianum)
n
A European herb, Jasione montana.
n
A plant, a small kind of teasel.
n
A thistle of the species Carduus tenuiflorus.
n
A small European plantain, Littorella uniflora, that grows in shallow water or mud at the edges of ponds
n
Drosera macrophylla, a species of perennial plant.
n
Oldenlandia verticillata (tribe Spermacoceae)
n
(botany) Any plant of the genus Asclepias whose seed vessels contain a long, silky down; milkweed.
n
Any of several species of low-growing flowering plants, the leaves of which are silvery underneath, some now assigned to the genus Argentina, most previously assigned to genus Potentilla.
n
Rush skeletonweed (Chondrilla juncea), native to parts of Europe, Asia, and North Africa, but considered an invasive plant.
n
The plant Gastrolobium heterophyllum.
n
(US) false Solomon's seal, Maianthemum racemosum
n
Any member of the genus Ageratina of perennials and rounded shrubs from the sunflower family, growing mainly in the warmer regions of the Americas.
n
Fritillaria meleagris, a flowering plant in the family Liliaceae.
n
Any of various unrelated plants reputed to cure snakebite.
n
Cardamine spp. (bittercress, shotweed)
n
(Australia) A plant of the genus Centipeda; either of the species Centipeda cunninghami or Centipeda minima, which induce sneezing and are known as a folk remedy for colds and allergic reactions.
n
Achillea ptarmica, a hardy flowering plant, poisonous to cattle, sheep and horses, but with various herbal applications in humans.
n
Sarcodes sanguinea, a parasitic flowering plant in the heath family.
n
The goldenrod, or any of various similar plants in the genus Solidago.
n
Any of several species of North American desert plants of the genus Dasylirion, of the asparagus family.
n
The plant Rumex acetosella.
n
A plant, the red goosefoot (Oxybasis rubra, syn. Chenopodium rubrum).
n
Alternative spelling of sow thistle [Any of the thistles in one of the genera Cicerbita and Sonchus.]
n
Spartium junceum, a flowering plant in the family Fabaceae, native to the Mediterranean, with many flexible rush-like twigs.
n
A bulbous iris, Iris xiphium, from the western Mediterranean; it has violet-purple flowers with a short perianth tube.
n
A species of water lily, Nuphar advena
n
The flowering plant Doryanthes palmeri.
n
A plant of the genus Veronica
n
False spikenard (Maianthemum racemosum, syn. Smilacina racemosa)
n
A plant, the yautia (Xanthosoma sagittifolium).
n
A species of quillworts, Isoetes echinospora.
n
The plant St John's wort.
n
Alternative form of squawweed [The golden ragwort.]
n
Trillium erectum, that has foul-smelling, yellow to purple flowers.
n
Asperula cynanchica, a perennial plant with small pink or white flowers, formerly used as a medicinal herb against quinsy.
n
Aster atticus, the European Michaelmas daisy.
n
Lycopodium clavatum, a club moss in the family Lycopodiaceae.
n
Jacobaea vulgaris (syn. Senecio jacobaea), a kind of ragwort.
n
Alternative form of staggerwort [Jacobaea vulgaris (syn. Senecio jacobaea), a kind of ragwort.]
n
(archaic) Smyrnium olusatrum, alexanders, horse parsley, an herb of the umbellifer family.
n
Trachelospermum jasminoides, a flowering plant in the family Apocynaceae, native to eastern and southeastern Asia.
n
Borage (Borago officinalis), an annual herb, and its product, starflower oil (family Boraginaceae).
n
Any of the genus Centaurea of herbaceous thistle-like flowering plants.
n
Cerastium fontanum, a mat-forming plant, native to Europe, with small white flowers and tear-shaped leaves that grow opposite one another in a star pattern.
n
(traditional Chinese medicine) The species used in traditional Chinese medicine under the name 百部 (bǎibù)/百步, including Stemona japonica, Stemona sessilifolia and Stemona tuberosa (perhaps also Stemona parviflora).
n
Agrimonia eupatoria (agrimony)
n
hound's tongue, Cynoglossum officinale
n
Hackelia virginiana, a biennial plant native to Eastern North America, with sticky burrs.
n
Silene viscaria, a flowering plant in the family Caryophyllaceae, with purple flowers and a sticky stem.
n
(Britain) A creeping plant covered in small hooked hairs, Galium aparine, known for clinging to clothing.
n
Solidago rigida, native to most of eastern North America.
n
The plant Rafflesia arnoldii
n
Jimsonweed (Datura stramonium).
n
A kind of chickweed, Rabelera holostea.
n
A flowering plant, Aethionema grandiflorum.
n
Certain plants of genus Lithospermum, in family Boraginaceae.
n
dodder, a parasitic plant (genus Cuscuta)
n
Saxifraga stolonifera, a perennial flowering plant.
n
The flowering plant Curio rowleyanus (syn. Senecio rowleyanus).
n
Any of various plants of the genus Wikstroemia.
n
A wild buckwheat, Eriogonum crocatum, native to a small area around the Conejo Valley in Ventura County, California, but grown in similar climates for its tolerance to drought, silvery foliage and deep yellow flowers.
n
Iva annua, annual marsh elder, a North American herbaceous annual plant in the sunflower family.
n
Gaillardia pulchella, a flowering plant of southern US, from Arizona to Florida, and northern Mexico.
n
A plant, Enceliopsis nudicaulis, that has a broad, yellow flowerhead
n
Any of various plants of the genus Asclepias.
n
Asclepias incarnata, native to eastern and central North America.
n
The plant Selliera radicans.
n
A low-growing flowering annual (Lobularia maritima).
n
Petasites frigidus, a flowering plant native to North America; northern sweet coltsfoot; Arctic butterbur.
n
A perennial wetland plant, Acorus calamus, with an aromatic medicinal root, formerly used to strew floors.
n
The herbaceous plant (Sixalix atropurpurea, syn. Scabiosa atropurpurea).
n
An aromatic perennial plant, formerly used as a strewing herb, Galium odoratum (formerly Asperula odorata), with small white flowers.
n
A fragrant Asian herb, Artemisia annua, widely naturalized, the source of the antimalarial drug artemisinin
n
The flowering plant Achillea ageratum.
n
western sweet cicely, western sweetroot (Osmorhiza occidentalis)
n
Any of the flowering plants of genus Hedysarum.
n
Either of two tropical American weeds, (Capraria biflora of the figwort family or Scoparia dulcis) of the plantain family.
n
A plant, the European water-flag or yellow iris.
n
Thalictrum dasycarpum (purple meadow-rue)
n
A herbaceous plant of the genus Posidonia
n
A plant of the genus Taraxacum.
n
A perennial herb, the wormwood species Artemisia dracunculus, from Europe and parts of Asia.
n
Any of various American flowering plants that have sticky leaves.
n
A small fern, Asplenium ruta-muraria.
n
(UK) A plant used as a remedy for tetter, Chelidonium majus
n
The Order of the Thistle, or membership thereof.
n
A North American herb, Salvia carduacea, the seeds of which were once a staple food similar to chia
n
Achillea millefolium or common yarrow, a flowering plant widespread in the temperate Northern Hemisphere, featuring finely divided leaves.
n
Artemisia tripartita, a sagebrush plant.
n
A kind of amaranth (Amaranthus caudatus).
n
Desmodium, tick-trefoils
n
The flowering plant Centella asiatica.
n
The plant Centaurea melitensis.
n
Any of various poisonous plants of the genus Datura.
n
Ammi visnaga (syn. Visnaga daucoides)
n
Amyris madrensis (mountain torchwood)
n
The common mullein (Verbascum thapsus).
n
The jewelweed, Impatiens noli-tangere, Impatiens capensis, Impatiens parviflora.
n
Turritis glabra (syn. Arabis glabra), a tall, slim, grey-green plant with small creamy flowers at the top of the stem.
n
The garden cress, or peppergrass.
n
Any of the plants in the genus Toxicodendron, including poison ivy, poison oak, etc.
n
Carolina horsenettle (Solanum carolinense).
n
Cnidoscolus stimulosus, the spurge nettle.
n
Any large, fast-growing and hard-to-remove weed, such as the flowering shrub Chromolaena odorata.
n
A milkweed native to the Central and North American tropics, the bloodflower, Asclepias curassavica L.
n
The wild potato, the arrow arum, Peltandra virginica.
n
(botany) Spathodea campanulata; African tulip tree, of family Bignoniaceae
n
Xerophyllum asphodeloides, a plant producing spikes of white flowers.
n
A sun spurge (Euphorbia helioscopia).
n
Operculina turpethum (obs. syn. Convolvulus turpethum, Ipomea turpethum, Merremia turpethum), a plant in the morning glory family.
n
A flowering plant of the genus Batis (Batis maritima).
n
Hypericum androsaemum, a Eurasian perennial shrub.
n
Dyschoriste oblongifolia, a dicotyledonous flowering plant of the family Acanthaceae, native to coastal plains regions of the United States.
n
jeffersonia, rheumatism root (Jeffersonia diphylla)
n
Amaranthus caudatus, an annual flowering plant, the love-lies-bleeding.
n
Limnocharis flava, yellow velvetleaf, an aquatic flowering plant native to southeast Asia.
n
An umbelliferous plant, Scandix pecten-veneris.
n
Any of various poisonous herbs of the genus Veratrum
n
The aromatic root of the grass.
n
Myriopteris windhamii, a species of lipfern.
n
Elymus virginicus, native to the northeastern United States.
n
Especially, Vitex rotundifolia, native to Pacific seashores in Asia and Oceania, widely introduced in similar environments.
n
The flowering plant Lobelia inflata.
n
(South Africa) Any plant of the subfamily Mesembryanthemoideae, succulent groundcovers.
n
The plant Gastrolobium grandiflorum.
n
Sedum acre, a form of stonecrop.
n
Any plant of three species of spiderworts, Tradescantia pallida, Tradescantia fluminensis, and Tradescantia zebrina.
n
The leaves of Sarracenia flava.
n
Samolus valerandi, a species of water pimpernel.
n
A floating aquatic plant, Pistia stratiotes, with green rosettes of leaves and inconspicuous flowers.
n
Any plant of the genus Sium, as the skirret.
n
The flowering plant Decodon verticillatus.
n
Alternative spelling of watercress [A perennial European herb, Nasturtium officinale, that grows in freshwater streams; used in salads and as a garnish.]
n
(botany) Alternative form of waterdock [(botany) Any of a species of perennial herbaceous plants in the genus Rumex native to fens and freshwater banks of Europe and Western Asia.]
n
A similar plant, Nasturtium microphyllum.
n
Alternative form of water plantain [Any of several plants, of the genus Alisma, that inhabit marshy places]
n
Any of several aquatic herbs of the genus Elodea.
n
Hoya carnosa, a plant of the genus Hoya.
n
Any of various plants of the genus Cuphea.
n
The thistle Cirsium arvense.
n
The flowering plant Sphenoclea zeylanica.
n
The plant Crepis vesicaria.
n
Gorse; furze (Ulex spp.).
n
The plant Hyoscyamus albus.
n
The legume Cytisus multiflorus.
n
Trillium grandiflorum, native to much of eastern North America.
n
(obsolete) whitlow-grass, Draba verna
n
The plant Gouania lupuloides.
n
The perennial herb Pyrola picta.
n
wild camomile, Matricaria recutita
n
The plant Veronicastrum virginicum.
n
The plant Castilleja coccinea.
n
(US) Any plant in the genus Eriogonum, related to true buckwheat
n
ramsons (Allium ursinum)
n
The plant Isopogon ceratophyllus.
n
Maianthemum canadense, native to northern and cooler eastern North America.
n
charlock (Sinapis arvensis).
n
Silene caroliniana, native to the eastern United States.
n
An edible vegetable and invasive plant Portulaca oleracea.
n
The plant Peganum harmala.
n
A species of flowering plant in the mint family, Thymus serpyllum.
n
A European species of loosestrife (Lysimachia vulgaris).
n
Any plant of the order Salicaceae, or the willow family.
n
Yellow loosestrife (Lysimachia vulgaris) or purple loosestrife (Lythrum salicaria).
n
common chickweed (Stellaria media)
n
Any member of the genus Polygonella of knotweeds and smartweeds.
n
Any of several flowering plants of the genus Striga, from Africa and Asia, some of which are parasitic to crops.
n
A kind of bindweed (Convolvulus arvensis).
n
(US, regional) The seeds of this water lily, eaten by the Klamath and others.
n
The plant Gastrolobium floribundum.
n
Euphorbia esula (leafy spurge)
n
Any kind of spurge (Euphorbia).
n
The snowdrop windflower (Anemone sylvestris).
n
A weedy plant, Gnaphalium sylvaticum, found in the north temperate zone.
n
Laportea canadensis, an annual or perennial herbaceous plant of the nettle family Urticaceae, native to eastern and central North America.
n
A plant of the species Stylophorum diphyllum
n
A white-flowered woodland plant, Oxalis acetosella.
n
Clematis virginiana, devil's darning needle
n
Galium odoratum, an aromatic herb.
n
(US) A fragrant and drought-tolerant shrub in the mint family native to southern California and neighboring Mexico (Trichostema lanatum), which is grown for its striking woolly inflorescences.
n
(especially Israel) Solanum villosum, a plant native to the Mediterranean.
n
Spigelia marilandica, the pinkroot.
n
Santonica or Levant wormseed, Seriphidium cinum, syn. Artemisia cina, an Asian plant related to wormwood.
n
An intensely bitter herb (Artemisia absinthium and similar plants in genus Artemisia) used in medicine, in the production of absinthe and vermouth, and as a tonic.
n
Prunella vulgaris (common self-heal)
n
Common yarrow, Achillea millefolium, the type species of the genus.
n
A low, shrubby, rubiaceous plant with white flowers, found along the seacoast of the West Indies.
n
The flowering plant Morinda royoc.
n
A yellow-flowered shrub native from the southern US to Central America, Tecoma stans
n
Cypripedium parviflorum, a type of lady's slipper orchid native to North America.
n
The plant Cascabela thevetia.
n
Synonym of Mexican poppy (“the plant Argemone mexicana”)
n
Nymphaea species, especially:
n
Anemone ranunculoides, a plant species in the buttercup (Ranunculaceae) family.
n
A low spreading plant with yellow flowers and clover-like leaves, Oxalis stricta.
n
Mecardonia procumbens, a species of herb.
n
A certain plant, probably Buphthalmum salicifolium, the yellow oxeye.
n
Ranunculus bulbosus (St. Anthony's turnip), of western Europe.
n
Rorippa palustris, a flowering plant in the mustard family.
n
A plant in genus Trichoptilium, in the daisy family.
n
Hydrastis canadensis, the goldenseal.
n
A perennial plant native to North America and widely planted as an ornamental: Tolmiea menziesii
n
Drosera rotundifolia, the round-leaved sundew or common sundew.
n
Epilobium canum, a North American willowherb.
n
Haworthiopsis attenuata (syn. Haworthia attenuata; zebra haworthia)
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