Scabiosa atropurpurea; also applied to the North American Erigeron annuus (N.O. Compositæ); also E. philadelphicus.

A name given to various plants: esp. A book-name for the genus Erigeron, esp. E. acre (called also blue fleabane).

U.S. Any of several plants of the family Asteraceae (Compositae) growing in mountainous country; esp. either of two fleabanes, Erigeron coulteri and…

U.S. regional. Horseweed (Canadian fleabane), Conyza canadensis.