Verbatim text: Anderson, J. L., S. Richmond-Williams, and O. Williams. 2007. Penstemon lanceolatus Benth. or P. ramosus Crosswhite in Arizona and New Mexico, a peripheral or endemic species? In: P. L. Barlow-Irick et al., eds. 2007. Southwestern Rare and Endangered Plants: Proceedings of the Fourth Conference. Fort Collins. Pp. 8–15.
Author: Anderson, J.L., Richmond-Williams, S., Williams, O.
Year: 2007
Title: Penstemon lanceolatus Benth. or P. ramosus Crosswhite in Arizona and New Mexico, a peripheral or endemic species?
Editor: Barlow-Irick, P.L.
Book year: 2007
Book title: Southwestern Rare and Endangered Plants: Proceedings of the Fourth Conference
Pages: 8–15