University of Colorado Museum of Natural History Herbarium Vascular Plant Collection (COLO:V)
Penstemon caespitosus Nuttall
W. A. Weber
10 July 1994
R. C. Wittmann
United States, Colorado, Gunnison, West Elk Mountains; base of McClure Pass, 11 miles S of summit.
On sandstone cliff; mostly on the level rim, but falling over the lip and developing huge circular mats.
Original ID: Penstemon caespitosus subsp. procumbens (Greene) Keck (syn.: P. procumbens Greene). Plants prostrate; developing huge circular mats. The type locality was "open slopes, Kebler Pass", but this site is reasonably close to the type locality.