Penstemon deaveri

Stems ascending to erect, 16–60 cm, retrorsely hairy, not glaucous. Leaves basal and cauline, not leathery, glabrous or proximals sometimes puberulent proximally, not glaucous; basal and proximal cauline 35–110 × 5–22 mm, blade spatulate to oblanceolate, base tapered, margins entire, apex rounded to obtuse; cauline 3–7 pairs, sessile, 20–95 × 4–16 mm, blade oblanceolate to elliptic or oblong, base tapered, apex obtuse to acute. Thyrses continuous, cylindric, 4–13 cm, axis puberulent, verticillasters 3–8, cymes (1 or) 2–4-flowered, (1 or) 2 per node; proximal bracts lanceolate, proximals 7–55 × 1–15 mm; peduncles and pedicels puberulent. Flowers: calyx lobes lanceolate to oblanceolate, 3–5.5 × 1.5–2.2 mm, glabrous or sparsely puberulent; corolla lavender to violet, with violet nectar guides, ventricose, 16–25 mm, glabrous externally, sparsely white-lanate internally abaxially, tube 4–5 mm, throat gradually inflated, not constricted at orifice, 6–8 mm diam., rounded abaxially; stamens: longer pair reaching orifice, pollen-sacs opposite, navicular, 1.2–1.5 mm, dehiscing completely or incompletely, connective splitting or not, sides glabrous, sutures smooth or papillate; staminode 9–14 mm, exserted, 0.7–1 mm diam., tip straight to recurved, distal 0.5–2 mm sparsely to moderately pilose, hairs yellow, to 0.8 mm; style 10–14 mm. Capsules 9–12 × 4.5–8 mm.

Phenology: Flowering Jul–Sep.
Habitat: Rocky slopes, pine forests, alpine meadows.
Elevation: 2000–3400 m.

Ariz., N.Mex.

Discussion

Penstemon deaveri is found in the Pinaleño and White mountains of Arizona and in the Datil, Mogollon, San Mateo, and Zuni mountains of New Mexico. The species has been documented in Apache, Graham, and Greenlee counties, Arizona, and Catron, Cibola, and Socorro counties, New Mexico. The bearded staminodes and glabrous and generally broader leaves of P. deaveri distinguish it from P. virgatus; rare individuals of P. deaveri have glabrous staminodes.

Selected References

None.

Lower Taxa