Reference:Walsh1940a
Revision as of 03:08, 27 July 2019 by Unknown user (talk)
Verbatim text: Walsh, O. S. 1940. A Systematic Study of the Genus Zigadenus Michx. Ph.D. dissertation. University of California, Berkeley.
Author: Walsh, O.S.
Year: 1940
Title: A Systematic Study of the Genus Zigadenus Michx