Monographs Details: Penstemon angustifolius var. vernalensis N.H.Holmgren
Authority: Pavlik, Bruce M. & Barbour, Michael G. 1988. Demographic monitoring of endemic sand dune plants, Eureka Valley, California. Biol. Conserv. 46: 217-242.
Family:Scrophulariaceae
Description:Latin Diagnosis - Foliis linearibus vel anguste lanceolatis, bracteis lanceolatis acutis, corollaque coerulea var. angustifolio similis, sed statura majori 2.5-4.5 (nec 1-3) dm alta, inflorescentia angusta elongata e verticillastris 6-16 discretis (nec 3-10 confertis) constanti, necnon floribus subsessilibus (nec breviter pedunculatis simul ac pedicellatis) diversa.

Discussion:

(Fig. 7)

Sandy soils in sagebrush vegetation, sometimes with scattered junipers, 1500-1800 m (5000-5800 ft) elevation. Endemic to the eastern Uinta Basin where it is known from four sites near Vernal: in Uintah Co., Utah, the type locality 8 km to the northwest; 10 km east, and 20 km southeast; and in Rio Blanco Co., Colorado, 58 km to the east-southeast near the Moffat Co. line (Fig. 12).