Penstemon immanifestus

Stems ascending to erect, 9–30(–35) cm, glabrous. Leaves basal and cauline, basal not reduced, glabrous; basal and proximal cauline 15–60(–90) × 8–25(–39) mm, blade oblanceolate to obovate, base tapered, apex rounded to obtuse, sometimes mucronate; cauline 3–7 pairs, short-petiolate or sessile, (25–)35–80 × 10–20(–28) mm, blade lanceolate to ovate, base tapered to clasping, apex obtuse to acute. Thyrses continuous or interrupted, cylindric, (4–)6–20 cm, axis glabrous, verticillasters (3–)5–10(–14), cymes 2–5-flowered; proximal bracts ovate to lanceolate, (5–)13–56 × (2–)4–24 mm; peduncles and pedicels glabrous, peduncles to 12 mm. Flowers: calyx lobes ovate, 5–8(–12) × 2–3.5 mm, margins entire or erose, broadly scarious, apex acuminate, glabrous; corolla bluish lavender to lavender or pink, with dark reddish violet or reddish nectar guides, funnelform to ventricose, 15–22 mm, glabrous externally, sparsely white-villous internally abaxially or glabrous, tube 5–7 mm, throat gradually inflated, 5–8 mm diam., rounded abaxially; stamens included, pollen sacs opposite, (1–)1.2–1.6 mm, sutures papillate; staminode 8–10 mm, included or reaching orifice, 0.7–1 mm diam., tip strongly recurved, distal 2–5 mm densely villous, hairs yellowish, brownish, or orangish, to 1 mm; style 10–12 mm. Capsules 8–12 × 4–6 mm. Seeds 2–4 mm.

Phenology: Flowering May–Jun.
Habitat: Sandy or sandy-loam soils, sagebrush grasslands.
Elevation: 1500–2200 m.

Distribution

• Generated Map
• Legacy Map

Nev., Utah.

Discussion

Penstemon immanifestus occurs along the western edge of the Bonneville Basin in eastern Nevada and western Utah, and in the Calcareous Mountains, central Great Basin, and Tonopah regions of eastern and central Nevada. Populations have been documented in Elko, Eureka, Lander, Nye, and White Pine counties, Nevada, and in Juab, Millard, and Tooele counties, Utah.

Selected References

None.

Lower Taxa

None.