Monday, March 3, 2014
Botany picture #144: Penstemon ovatus
Penstemon ovatus (Plantaginaceae), Botanic Garden of Zurich, 2009. The attractive genus Penstemon has undergone an impressive radiation in North America and provides an interesting study group for evolutionary shifts between bird and bee pollination. The Botanic Garden of Zurich had a great collection of species from this genus when I was working there as a postdoc.
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