Species Identification

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

AttributeThe current selection is Penstemon_sudans
ClassificationPenstemon Penstemon Penstemon Deusti
GeneralSweating Penstemon A pleasantly fragrant species, Mr. Nold comments that it is worth growing to see the ‘sweating’ aspect. It previously was considered a variety of P. deustus. Blooms: June and July.
Anther0.5-0.6 mm long, broadly ovate with segments opening full length, nearly flat, white, essentially smooth.
Staminodeincluded, usually smooth, white, fertile stamens included.
Leaves3-6 cm (1 1/8-2¼”) long & 8-20 mm (1/4-3/4”) wide, ovate and stemless or the lower ones obovate and tapering to a stemmed base, opposite or subopposite, without a connecting ridge around the stem.
StemsRobust perennial with poorly developed basal leaves; 3-7 dm (12-28”) tall; stems erect, stout; herbage prominently glandular-pubescent (sticky-fuzzy) and clammy feeling throughout.
InflorescenseThyrse not at all one-sided, elongate with about 9-18 condensed and distinct verticillasters, prominently glandular-pubescent throughout.
Corolla9-11 mm (>1/4”) long, the lower lip slightly projecting beyond the upper one, the lobes all spreading, the upper slightly narrower, cream-white with red-violet guide-lines inside the throat and middle of lobes, the throat often rose-tinged, glandular-pubescent outside and inside the lobes.
Flower Color
Calyx3.5-5.5 mm long, the segments lanceolate to ovate, glandular-pubescent, the margins usually thin edged.
HabitatOpen rocky places, usually of igneous origin, in sagebrush and open woodlands, 1200-1700 m (4000-5700”).
RangeEndemic to vicinity of Susanville, Lassen Co., CA e to adj. Washoe Co., NV.