horseweed


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horse·weed

 (hôrs′wēd′)
n.
A weedy North American annual plant (Conyza canadensis) in the composite family, having a tall erect stem, narrow leaves, and numerous small whitish flower heads grouped in panicles. Also called mare's tail.

horseweed

(ˈhɔːsˌwiːd)
n
(Plants) the US name for Canadian fleabane. See fleabane3

horse•weed

(ˈhɔrsˌwid)

n.
a North American composite weed, Erigeron canadensis, having narrow hairy leaves and clusters of very small greenish flowers.
[1780–90]

Horseweed

An annual common throughout North America. It grows as high as six feet and during the Depression years of the 1930s was sometimes pulled up and fed to livestock.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Horseweed - erect perennial strong-scented with serrate pointed leaves and a loose panicle of yellowish flowershorseweed - erect perennial strong-scented with serrate pointed leaves and a loose panicle of yellowish flowers; the eastern United States
herb, herbaceous plant - a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests
Collinsonia, genus Collinsonia - small genus of perennial erect or spreading aromatic herbs; United States
2.Horseweed - common North American weed with linear leaves and small discoid heads of yellowish flowershorseweed - common North American weed with linear leaves and small discoid heads of yellowish flowers; widely naturalized throughout temperate regions; sometimes placed in genus Erigeron
Conyza, genus Conyza - common American weed or wildflower
weed - any plant that crowds out cultivated plants
References in periodicals archive ?
Cross-resistance of horseweed (Conyza canadensis) populations with three different ALS mutations.
This study aimed to use geostatistical techniques to map the weed species common sow thistle (Sonchus oleraceus), horseweed (Conyza spp) and 'maria-mole' (Senecio brasiliensis), in order to study their spatial dependence in an area under no-tillage system during two agricultural seasons.
The problem weed species, horseweed (Conyza bonariensis), of lesser frequency, was controlled 100%.
Often, sickness and being-out-of-place seem to collude, as in the figure of an old man sitting like a thicket of horseweed by the riverbank: "he had a mild case of dementia rather like Erigeron canandensis.
Brassicaceae), Coulter's horseweed, Laennecia coulteri (Asteraceae), golden crownbeard, Verbesina encelioides (Asteraceae), scrambled eggs, Corydalis aurea (Papaveraceae), velvet weed, Oenothera curtiflora (Onagraceae), silverleaf nightshade, Solanum elaeagnifolium (Solanaceae), copper globemallow, Sphaeralcea angustifolia (Malvaceae), trailing windmills, Allionia incarnata (Nyctanginaceae), and Dakota mock vervain, Glandularia bipinnatifida (Verbenaceae).
In California vineyards, we have horseweed, hairy fleabane, rigid ryegrass and jungle rice grass that have developed resistance to glyphosate.
A stone fruit orchard in Fresno County is dominated by glyphosate-resistant horseweed.
Horseweed, Muleweed; Old-field along RR track; Abundant; C = 0; BSUH 18628.
family: Asteraceae; common name: horseweed, commonly occurs as a weed in grain crops, orchards, vineyards, pastures, abandoned fields, roadsides, railroads, stream banks and urban areas (Koger et al.