horseweed, n.
(horseweeds)
(horseweeds)
common North American weed with linear leaves and small discoid heads of yellowish flowers; widely naturalized throughout temperate regions; sometimes placed in genus Erigeron
<noun.plant>
Canadian fleabane Conyza canadensis Erigeron canadensis fleabane horseweed
erect perennial strong-scented with serrate pointed leaves and a loose panicle of yellowish flowers; the eastern United States
<noun.plant>
Collinsonia canadensis horse balm horseweed richweed stone root stone-root stoneroot