PhD 2001: Evolution and dynamics of hybridization in Penstemon subgenus Dasanthera (Scrophulariaceae S.L.)

Penstemon fruticosus – pollinated primarily by bees.

Shannon worked on the basal lineage of Penstemon, including phylogenetics, population genetics, and pollination ecology. She has continued her work on Penstemon with a focus on subgenus Saccanthera. She is currently an associate professor in the Department of Biological Sciences at California State University, Sacramento.

http://www.csus.edu/indiv/d/datwylers/index.htm