Penstemon distans
Brittonia 32: 326, fig. 1. 1980.
Stems ascending to erect, (25–)30–60 cm, puberulent proximally, glandular-pubescent distally. Leaves basal and cauline, not leathery, puberulent proximally, glandular-pubescent distally; basal and proximal cauline petiolate, 55–140 × 2–14 mm, blade oblanceolate, base tapered, margins entire or ± dentate, apex obtuse to acute; cauline 3–6 pairs, short-petiolate or sessile, 25–40(–60) × 1–3(–7) mm, blade lanceolate, base tapered to subcordate-clasping, margins entire or ± serrate, apex obtuse to acute. Thyrses interrupted, cylindric, 8–30 cm, axis glandular-pubescent, verticillasters 6–10, cymes 1- or 2(or 3)-flowered, 2 per node; proximal bracts lanceolate to linear, 5–35 × 1–6 mm; peduncles and pedicels glandular-pubescent. Flowers: calyx lobes lanceolate, 4–7 × 1–1.8 mm, glandular-pubescent; corolla blue to violet, with reddish purple nectar guides, funnelform, 16–20 mm, sparsely to moderately white- or yellow-lanate internally abaxially, tube 7–8 mm, throat gradually inflated, not constricted at orifice, 6–8 mm diam., 2-ridged abaxially; stamens included, pollen sacs parallel, navicular, 1.4–1.8 mm, dehiscing completely, sutures papillate; staminode 9–11 mm, reaching orifice or barely exserted, 0.7–0.9 mm diam., tip recurved, distal 6–8 mm densely hairy, hairs yellow-orange, to 1.4 mm; style 7–9 mm. Capsules 7–9 × 4–6 mm.
Phenology: Flowering Apr–Jun.
Habitat: Limestone gravel slopes, pine-juniper woodlands.
Elevation: 1200–1600 m.
Discussion
Penstemon distans is known from the southeastern end of the Shivwits Plateau in Mohave County.
Selected References
None.