Species Identification

Interested in the identification of penstemons? Please select a species then click on submit:

AttributeThe current selection is Penstemon_flowersii
ClassificationPenstemon Penstemon Coerulei
GeneralFlower’s Penstemon RARE and THREATENED, and first described in 1984, P. flowersii was given separate taxonomic status from P. carnosus in 1993 as a geographically separate, pink population, lacking basal leaves. (N. Holmgren, Intermountain Flora). Blooms: May to early June.
Anther0.9-1.1 mm long, opening the full length, spreading wide, but not flat, smooth except for the nipple-toothed cell edges, violet on back
StaminodeIncluded, the tip strongly curved or coiled and golden-yellow bearded with short, straight hairs or sometimes minute papillae.
LeavesAll cauline, 3-6 cm (1-2 ¼”) long, & 1-2 cm (to ¾”) wide, entire, fleshy, the lower ones petiolate (with stems), obovate to lanceolate, obtuse, the lower ones sometimes rounded at tip.
StemsPerennial herb 1.1-1.7 (4-7”) tall, from a branched, woody caudex, surmounting a taproot; herbage glabrous and glaucous (smooth & bluish); stems erect or ascending, few to several, unbranched.
Inflorescense2-9 verticillasters, mostly aggregated into a continuous thyrse, the cymes 2- or 3-4-flowered, smooth, the stems short, the bracts broadly ovate.
Corolla14-17 mm (1/2-5/8”) long, pink with violet guide-lines inside the throat, moderately bulging, the tube 7-8 mm long, the lobes more or less spreading, smooth inside and out.
Flower Color
Calyx5.5-7.5 mm (to 3/8”) long, the sepals broadly lanceolate to ovate, acuminate, smooth, the edges ragged, papery.
HabitatClay soils (badlands), often mixed with river-rounded gravel and rocks, in shadscale, horsebrush, and rabbitbrush communities, 1490-1600m (4900-5300’).
RangeEndemic to the c Uinta Basin, s of Roosevelt, between Lake Boreham and Randlett, on both sides of the Duchesne and Uintah Co. Lines, UT.