Verbatim text: Glenne, G. 2003. Reproductive Biology, Hybridization Isolating Mechanisms, and Conservation Implications of Two Rare Subspecies of Penstemon bicolor (Brandeg.) Clokey and Keck: Ssp. bicolor and ssp. roseus Clokey and Keck (Scrophulariaceae) in Clark County, Nevada. M.S. thesis. Utah State University.
Author: Glenne, G.
Year: 2003
Title: Reproductive Biology, Hybridization Isolating Mechanisms, and Conservation Implications of Two Rare Subspecies of Penstemon bicolor (Brandeg.) Clokey and Keck: Ssp. bicolor and ssp. roseus Clokey and Keck (Scrophulariaceae) in Clark County, Nevada