Species Identification

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

AttributeThe current selection is Penstemon_pruinosus
ClassificationPenstemon Penstemon Penstemon Humiles
GeneralChelan or Hoary Penstemon Pruinosus means gray-pubescent (whitish fuzz) or strongly glaucous, like “hoar-frost”, referring to the mostly, but variable, densely hairy, often glandular stems and foliage. Blooms: May and June.
AntherSmooth on outside, opening totally, the sacs spreading nearly opposite and boat-shaped to nearly explanate (flat), 0.5-0.8 mm long.
StaminodeUsually just reaching the orifice, bearded with a yellow tuft at the tip.
Leaves7-15 cm, (to 6”) long, mostly broad, ovate to lanceolate on long petioles, ½ to ¾ the length of the blades below, acute-tipped, finely and sharply toothed, nearly smooth to glandular or pubescent; cauline leaves to 6 cm (2 1`/4”) long, stemless, serrate-toothed, lance-shaped to triangular, mostly glandular or pubescent.
Stems1-4 dm (4-16”) tall, a few stems usually arise erect in a tuft, densely glandular (sticky) full-length or glandular above and gray-pubescent with short, nonglandular hairs below.
InflorescenseDensely glandular, of 3 to 7 widely spaced verticillasters, narrow, the lower peduncles (leaf stems) pressed tightly to the stem, the cymes 5 to 10-flowered.
Corolla10-16 mm (to 5/8”) long, lavender to blue-purple, the throat pale with guide lines, the tube only slightly expanded full length, the lower lip longer than the upper, glandular on the outside, the palate glabrous or slightly pubescent.
Flower Color
Calyx3-6 mm (to 1/4”) high, sometimes purplish, glandular, the sepals entire, acute or acuminate at the tip and narrowly ragged, lanceolate to oblong.
HabitatOpen sagebrush or pine slopes from canyons and plains and into the mountains.
RangeEast slope of the Washington Cascades to the central Columbia Basin and north to s-central BC.