[Beardtongues and Penstemons: The Genus Penstemon West of the Cascade Mountains of Oregon and Washington]

This photo shows a close-up frontal view of the corolla of Roezl's penstemon as seen along Coyote Creek Road in the Umpqua National Forest.......June 25, 2005. Note the glabrous staminode which is slightly expanded at the tip and just reaches the orfice of the corolla. The anthers are also visible here. They are horseshoe-shaped with white hairs or minute spines along the suture of the anther.

Although slightly out of focus, this photo shows a close-up sideview of the corolla of Roezl's penstemon as seen along Coyote Creek Road in the Umpqua National Forest.......June 25, 2005. Note the gland-tipped hairs on the outside of the corolla tube.

Close-up images of the flowers and stem leaves of Roezl's penstemon as seen at the Onion Camp trailhead for Whetstone Butte, Siskiyou National Forest.......July 15, 2012. The narrow leaves are generally pale gray-green in color and finely pubescent.

Roezl's penstemon as seen on rocky slopes under oaks uphill to the south of Deer Creek Center, west of Selma, Oregon........July 13, 2012.

Additional close-ups of the inflorescence and stem leaves of Roezl's penstemon as seen along Coyote Creek Road in the Umpqua National Forest.......June 25, 2005. The narrow leaves are generally pale gray-green in color and finely pubescent.

Roezl's penstemon blooming with Howell's camas (center) along Coyote Creek Road in northeastern Josephine County, OR........June 11, 2017