Reference:Cronquist1947a
Verbatim text: Cronquist, A. 1947. A revision of the North American species of Erigeron, north of Mexico. Brittonia 6: 121–302.
Author: Cronquist, A.
Year: 1947
Title: A revision of the North American species of Erigeron, north of Mexico
Journal: Brittonia
Volume: 6
Pages: 121–302