Authors: Lange, RS Scobell, SA Scott, PE

Citation: Rs. Lange et al., Hummingbird-syndrome traits, breeding system, and pollinator effectivenessin two syntopic Penstemon species, INT J PL SC, 161(2), 2000, pp. 253-263

Authors: Lange, RS Scott, PE

Citation: Rs. Lange et Pe. Scott, Hummingbird and bee pollination of Penstemon pseudospectabilis, J TORREY B, 126(2), 1999, pp. 99-106