Verbatim text: Keck, D. D. 1927. A revision of the genus Orthocarpus. Proc. Calif. Acad. Sci., ser. 4, 16: 517–571.
Author: Keck, D.D.
Year: 1927
Title: A revision of the genus Orthocarpus
Journal: Proc. Calif. Acad. Sci
Volume: 4
Pages: 517–571