Species Identification

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

AttributeThe current selection is Penstemon_albidus
ClassificationPenstemon Penstemon Cristati
GeneralWhite-flowered Penstemon This species has the widest distribution of any species in the Great Plains. Blooms: June and July.
Anther0.7-0.9 mm long, smooth, the sacs opening full length and spreading to flatly open.
StaminodeBearded moderately most of its length with yellow hairs, light beard at tip, included with the orifice.
Leavesto 10 cm (4) long; including the stem, lower leaves 1/6 as wide as long, upper leaves 1/8 as wide, reduced above and stemless, lanceolate to elliptic, entire or with small serrate teeth on the margins.
Stems10-40 cm (4-16) tall, herbage grey-pubescent (fuzzy), few to several stems arising from a woody root crown.
InflorescenseOf 3-9 verticillasters, the cymes are 2-7-flowered, glandular (sticky) or finely pubescent (fuzzy).
Corolla15-20 mm (5/8-3/4) long, creamy white, often tinged lavender; lobes spread at right angle to throat; lip not bearded, glistening-pubescent outside & within, fragrant at dusk, attracting moths.
Flower Color
Calyx5-10 mm (1/4-3/8) long; lobes lanceolate or ovate and acute at the tip, margins entire and often slightly scarious (ragged).
HabitatOpen prairie grassland, fairly low elevations.
RangeGreat Plains from southeastern Alberta, Can. east to Manitoba, s to ne NM, n TX.