Horseweed — synonyms, definition

1. horseweed (Noun)

Canadian fleabane Collinsonia canadensis Conyza canadensis Erigeron canadensis fleabane horse balm richweed stone root stone-root stoneroot

horseweed (Noun) — Erect perennial strong-scented with serrate pointed leaves and a loose panicle of yellowish flowers; the eastern United States.

horseweed (Noun) — Common North American weed with linear leaves and small discoid heads of yellowish flowers; widely naturalized throughout temperate regions; sometimes placed in genus Erigeron.

herb herbaceous plant weed Collinsonia Conyza genus Collinsonia genus Conyza