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