Photos by: Andrea D. Wolfeİ

This is a copy of a slide I use in my seminar about the systematics of Penstemon. The species is P. palmeri. I've used a ring flash with my 50 mm macro lens to get the close-up photos. Notice how the staminode bends over the ovary in the dissection of the flower shown at the right.
Penstemon floral morphology

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Last updated April 19, 1999.