]> [author note: Penstemon] [collector note: WSCO] Example of Name Published: Penstemon holmgrenii S.L.Clark, Great Basin Naturalist 37(1): 100; 37(2): 258. 1977 (invalid) Botany Clark, Stephen Larson Clark, Stephen Larson S.L.Clark S. L. Clark Clark, Stanley Larson Stephen Larson Clark 1940