The first identification key for this plant establishes that the stamen's anther sac splits at its ends rather than in the center. This photomicrograph shows the anther sac split at each end.
Wildflowers of Southern Arizona
Bearded Penstemon.
Penstemon barbatus.
Plantain (Plantaginaceae) family.
The flowers are on one side of the tall, slender, leaning or upright flower stalks. The individual flowers are tubular, 1 1/2 inches (3.8 cm) long, and have 2 forward-projecting upper lobes and 3 reflexed lower lobes with a golden haired, white-streaked base. The leaves are green, opposite, and narrowly linear in shape.
Santa Catalina Mountains.
Location: Molino Basin Campground. (Widely distributed on mountain.)
5/21/15
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