Species Identification

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

AttributeThe current selection is Penstemon_longiflorus
ClassificationPenstemon Habroanthus Glabri
GeneralLong-flowered Penstemon. RARE Blooms: June to July.
Anther1.8-2.2 mm, opening at outer ends 4/5 the length, the line of opening remaining straight, (not twisted) and nipple-toothed.
StaminodeWhite or yellow-bearded and included, fertile stamens included.
LeavesBasal 4-9 cm (1 -3 1/2) long, mostly obovate and smaller than the middle stem leaves, tapered to short, winged (stems ridged on sides) petioles; cauline leaves 3.5-7 cm long, narrow or broadly lance-shaped and stemless to heart-shaped and clasping the stem, smooth above, puberulent (furry) below.
Stems2.5-6 dm (9-24) tall, with a single or a few upright stems, glabrous.
InflorescenseOf 3-6 loosely branched verticillasters, well spaced below to crowded above, somewhat one-sided arrangement of flowers or surrounding the stem, the cymes 1- to 2 or 3-flowered, smooth.
Corolla24-30 mm (1-1 1/4) long, the lobes light blue, the throat violet, white inside throat, smooth within and without, upper lip shorter, arched up, the lower spreading, moderately expanded at the throat, 2-ridged on the palate and bellied below.
Flower Color
Calyx4.5-7mm (<1/2) long, smooth, ovate with sharp tips recurving; smooth, margins thinned.
HabitatSagebrush, Gambel oak and mountain mahogany associates on steep, well-vegetated slopes with loose quartzite; 1800-2500 m (5500-7000).
Range6 western counties of UT on Tushar and Pavant plateaus and the Mineral and Canyon mts, UT.