Definition of: erigeron

(i·rij′ə·ron) noun
Any plant of a large genus (Erigeron) of mainly North American weedy herbs of the composite family, usually bearing solitary heads with numerous violet, purple, or white ray flowers. Certain species, as E. canadensis, yield oil of erigeron, used as a hemostatic drug. [<L, groundsel <Gk. ērigerōn <ēri early + gerōn old man; with ref. to a hoary growth on some species]