Penstemon spatulatus

Herbs. Stems ascending to erect, 6–26 cm, retrorsely hairy or glabrate, not glaucous. Leaves basal and cauline, ± leathery or not, glabrous or puberulent proximally on petiole and along midvein abaxially; basal and proximal cauline 10–60 × 3–18 mm, blade spatulate to elliptic, base tapered, margins entire, sometimes ± serrulate distally, apex rounded to obtuse or acute; cauline 1–3 pairs, sessile, 14–35 × 2–8 mm, blade lanceolate, sometimes oblanceolate, base truncate, margins entire, rarely ± serrulate distally, apex obtuse to acute. Thyrses interrupted, cylindric, 1–13 cm, axis moderately glandular-pubescent, verticillasters 1–5, cymes 2–5-flowered, 2 per node; proximal bracts lanceolate, 8–30 × 2–7 mm, margins entire; peduncles and pedicels ascending to erect, glandular-pubescent. Flowers: calyx lobes ovate to lanceolate, 2.6–4.8 × 1–1.8 mm, glandular-pubescent; corolla light blue to light purple, with violet nectar guides, funnelform, 10–14 mm, glandular-pubescent externally, moderately white or yellowish lanate internally abaxially, tube 4–5 mm, throat slightly inflated, 3.5–4.5 mm diam., 2-ridged abaxially; stamens included, pollen-sacs opposite, navicular to subexplanate, 0.6–0.8 mm, dehiscing completely, connective splitting, sides glabrous, sutures papillate; staminode 6–7 mm, included, 0.3–0.4 mm diam., tip recurved, distal 0.5–1.5 mm densely pilose, hairs yellow, to 0.7 mm; style 8–10 mm. Capsules 4–6 × 2.5–4 mm, glabrous.

Phenology: Flowering Jul–Aug.
Habitat: Open rocky slopes, meadows.
Elevation: 2300–2500 m.

Oreg.

Discussion

Penstemon spatulatus is known only from the Strawberry and Wallowa mountains of northeastern Oregon.

Selected References

None.

Lower Taxa