Reference:Cronquist1943a
Verbatim text: Cronquist, A. 1943. The separation of Erigeron from Conyza. Bull. Torrey Bot. Club 70: 629–632. 1943.
Author: Cronquist, A.
Year: 1943
Title: The separation of Erigeron from Conyza
Journal: Bull. Torrey Bot. Club
Volume: 70
Pages: 629–632