Penstemon gormanii

Stems ascending to erect, (6–) 10–30 (–65) cm, glabrous proximally, glandular-pubescent to glandular-villous distally. Leaves basal and cauline, not leathery, glabrous or distal cauline sometimes glabrous abaxially, glandular-pubescent adaxially; basal and proximal cauline petiolate, (18–) 35–100 × (2–) 3–10 mm, blade spatulate to oblanceolate, base tapered, margins entire or obscurely serrate, apex rounded to obtuse or acute; cauline 2–4 pairs, sessile, 15–68 × 2–16 mm, blade oblong to lanceolate, base tapered to clasping, margins entire or obscurely serrate, apex obtuse to acute. Thyrses continuous or ± interrupted, cylindric, (1–) 3–15 cm, axis glandular-villous, verticillasters 2–6, cymes (1 or) 2–5-flowered, 2 per node; proximal bracts lanceolate to linear, (5–) 10–56 × (1–) 3–10 mm; peduncles and pedicels glandular-pubescent. Flowers: calyx lobes lanceolate, 7–10.5 × 1.4–2.2 mm, glandular-villous; corolla lavender to purple or bluish violet, with reddish purple nectar guides, ventricose, 19–30 mm, sparsely white or yellowish villous internally abaxially, tube 5–6 mm, throat abruptly inflated, not constricted at orifice, 8–14 mm diam., rounded abaxially; stamens included, pollen-sacs opposite, navicular, 1.3–1.5 mm, dehiscing completely, sutures smooth; staminode 13–17 mm, prominently exserted, 0.4–0.6 mm diam., tip straight to recurved, distal 2–3 mm sparsely lanate, hairs yellow, to 2 mm, and medial 4–8 mm sparsely to moderately pilose, hairs yellow, to 1 mm; style 11–14 mm. Capsules 7–10 × 4–5 mm. 2n = 16.

Phenology: Flowering Jun–Aug.
Habitat: Rocky slopes, sand dunes, gravelly stream terraces, clearings in forests.
Elevation: 400–1200 m.

B.C., N.W.T., Yukon, Alaska.

Discussion

Penstemon gormanii resembles P. eriantherus vars. argillosus and whitedii.

Selected References

None.

Lower Taxa