Verbatim text: Moorman, M. L. 1982. Systematic Revision of Penstemon subglaber, P. saxosorum, and P. mensarum. M.S. thesis. University of Wyoming.
Author: Moorman, M.L.
Year: 1982
Title: Systematic Revision of Penstemon subglaber, P. saxosorum, and P. mensarum