Species Identification

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

AttributeThe current selection is Penstemon_paysoniorum
ClassificationPenstemon Habroanthus Glabri
GeneralPayson’s Penstemon Blooms: June
Anther1.2-1.7 mm long, opening nearly the full length, but not next to the connective, long-hairy on the side, the sutures nipple-toothed.
Staminode: included, bearded at tip, the hairs thinning out below, fertile stamens reaching the orifice.
Leaves3-6.5 cm (1 ¼-2 ½”) long X 2-8 mm (<1/4”) wide, entire, the basal and lower cauline ones oblanceolate tapering to a stemmed base, the upper cauline ones linear to narrowly lanceolate, often folded, the margins crisped (wavy), stemless.
StemsPerennial herb, 9-18 cm (3-7”) long; stems ascending or decumbent at the base, usually several arising from a branched, woody root base, herbiage glabrous (smooth).
InflorescenseThyrse of 2-6 verticillasters, the cymes usually 3- or more-flowered, smooth, one-sided.
Corollasmall but plentiful, 15-21 mm (1/2-3/4”) long, tube moderately bellied, blue, smooth within and without.
Flower Color
Calyx4-6 mm <(1/4”) long, the sepals ovate, acuminate, smooth, the edges broadly thinned and ragged.
HabitatDry, sagebrush hills, 2000-2300 m (6000-6900’).
RangeEndemic to sw WY in s. Sublette, s. Lincoln, Uninta and sw Sweetwater Cos.,WY.