Species Identification

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

AttributeThe current selection is Penstemon_caryi
ClassificationPenstemon Habroanthus Glabri
GeneralCary’s Penstemon First collected in 1910 by botanist Austin Cary, its lovely true-blue flowers are immediately identifiable by the rather sparse, flexuous pubescence on the anthers of an otherwise glabrous plant. Blooms: Mostly in June.
Anther20-25 mm (¾-1”) long, bright blue to lavender in the throat with guide lines, glabrous inside and out
Staminode2-2.5 mm, (1/8”) long, white hairy overall, the hairs about equaling the width of the sacs, flexuous and not dense, the sacs open about 7/8 their length from the outer ends, sometimes almost to, but not across the connective, spreading at an obtuse angle.
Leaves7 cm (2 ¾”) long and 10-15 times as narrow at mid-height, mostly linear, lower leaves tapered to a petioled base and stemless above, much-reduced at the base of plants, tending to fold at the midrib, glabrous.
Stems1-3 dm (4-12”) tall in a small upright clump, purplish especially above, smooth and somewhat glaucous.
InflorescenseA glabrous panicle, the cymes 2- to 3-flowered, often in racemes at the apex, quite crowded, occupying ½ to 1/3 of the stem height and on one side of stem.
Corolla20-25 mm (¾-1”) long, bright blue to lavender in the throat with guide lines, glabrous inside and out.
Flower Color
Calyx5-8 mm (to 5/16”) overall, sepals broad at base, abruptly narrowing to acuminate tips, that are ½ the length, smooth, narrowly thinned and ragged on margins.
Habitatsubalpine forest openings to alpine, more or less rocky slopes.
RangeThe Pryor and Bighorn Mts., Carbon Co., MT and the Bighorn Mts. of n-central WY