Species Identification

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

AttributeThe current selection is Penstemon_seorsus
ClassificationPenstemon Penstemon Penstemon Gairdneriani
GeneralShort-lobed or Narrow-leaved Penstemon RARE The clasping leaf bases, joined at the base around the stem provide a distinguishing characteristic between this species and P. gairdneri, preceding. P. seorsus resembles P. cusickii more closely, but cusickii is in Subgenus Saccanthera with its sac-like anthers. Blooms: late May and June.
Anther0.8-1.3 mm long, smooth, the sacs opening full length, opening to boat shape and spreading opposite.
StaminodeYellow-bearded full length, longer than the stamens, exserted from the corolla.
LeavesAll linear, 2-5 cm (1-2) long by 1-3 mm wide, mostly opposite and clasping, the leaf pairs connected at the base by a ridge around the stem, some leaf pairs may be offset or scattered near the top of the stem, densely fine-hairy and the margins curled inward.
Stems2-3 dm (8-12) tall, in a tuft, often with some sterile stems as high as the flowering ones, densely leafy below the inflorescence.
Inflorescensea raceme or mixed raceme-panicle, few-flowered.
Corolla15-23 mm (5/8-7/8) long, blue to pink, but mostly lavender, glabrous inside, glandular outside, the tube not much expanded, the petal lobes short and not much flared.
Flower Color
Calyx3-5.5 mm (<1/4) long, the sepals lance-shaped or oval, tapered to acute tips, entire and narrowly ragged on the edges.
HabitatDry, rocky places, often on ridge tops in the plains and foothills, often with sagebrush.
RangeCentral OR to the sw corner of ID.