Species Identification

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

AttributeThe current selection is Penstemon_laevis
ClassificationPenstemon Habroanthus Glabri
GeneralSmooth Penstemon Blooms: May and June.
Antherspreading, opening from outer ends ¾ the length, not across the connective, sigmoidally-twisted, one pair just exserted from lip.
Staminodegolden-yellow-bearded, just reaching the orifice.
Leaves5-10 cm (2-4”) long, 10-30 mm wide, entire, the basal and lower stem ones broadly oblanceolate to obovate, obtuse tipped, with a stem, the upper cauline ones lanceolate to narrowly elliptic, stemless and all are bright-green.
StemsShort-lived perennial herb, 4-6 dm (16-24”) tall; stems erect or ascending, 1 to few arising from a simple crown, this surmounting a taproot; herbage smooth throughout and blueish. It’s name “laevis” mean smooth, hairless
InflorescenseThryse of 6-15 verticillasters, the cymes 1-3 flowered, smooth, the flowers usually on one side of stems.
Corolla24-30 mm (to 1”) long, bellied on lower part, the upper lip projecting to arched, lower lip lobes spreading, tube and lips rich blue or purple, white within with red-violet guide-lines, smooth within and without including the throat.
Flower Color
Calyx5-8 mm long, segments broadly ovate, sharp tipped, smooth, the margins thin and ragged.
HabitatDryland species, sandy places among sagebrush, pinyon, juniper and ponderosa pine, 1500-2000 m (5000-7100’).
Rangee. Washington Co. in Zion Nat’l Park region and w Kane Co. from Orderville to Kanab, on the Kaibab Plateau. and in Coconino Co,. AZ.