Penstemon barnebyi

N. H. Holmgren
Brittonia 31: 226, fig. 5. 1979.
Common names: Barneby’s beardtongue
Endemic
Treatment appears in FNA Volume 17. Treatment on page 130. Mentioned on page 127.

Stems ascending to erect, 5–20(–30) cm, retrorsely hairy. Leaves basal and cauline, not leathery, retrorsely hairy; basal and proximal cauline petiolate, 12–55(–75) × 4–12 mm, blade elliptic to spatulate, base tapered, margins entire or obscurely and remotely serrate, apex rounded to obtuse or acute; cauline 2–5 pairs, short-petiolate or sessile, 19–65 × 2–8 mm, blade lanceolate to oblanceolate, base truncate to tapered, margins entire or remotely serrate, apex obtuse to acute. Thyrses continuous, cylindric, 2–10 cm, axis densely glandular-pubescent, verticillasters 3–8, cymes 3–5-flowered, 2 per node; proximal bracts lanceolate, 18–70 × 3–8 mm; peduncles and pedicels densely glandular-pubescent. Flowers: calyx lobes lanceolate, 4.5–7 × 1.1–1.8 mm, glandular-pubescent; corolla lavender to bluish lavender or violet, with reddish violet nectar guides, ventricose, 10–14 mm, sparsely to densely white- or yellowish lanate internally abaxially, tube 4–6 mm, throat abruptly inflated, ± constricted at orifice, 4–5 mm diam., rounded abaxially; stamens included, pollen sacs opposite, explanate, 0.6–0.9 mm, dehiscing completely, sutures smooth; staminode 9–10 mm, prominently exserted, 0.2 mm diam., tip coiled, distal 5–6 mm densely pubescent, hairs orange or orangish yellow, to 1.2 mm; style 7–9 mm. Capsules 3–6 × 3–5 mm.


Phenology: Flowering May–Jun.
Habitat: Alluvial gravels, calcareous silts, sagebrush shrublands, pinyon-juniper woodlands.
Elevation: 1500–2500 m.

Discussion

Penstemon barnebyi is known from Mono County, California, and Esmeralda, Lincoln, Mineral, Nye, and White Pine counties, Nevada.

Selected References

None.

Lower Taxa

None.

... more about "Penstemon barnebyi"
Craig C. Freeman +
N. H. Holmgren +
Penstemon +
Barneby’s beardtongue +
Calif. +  and Nev. +
1500–2500 m. +
Alluvial gravels, calcareous silts, sagebrush shrublands, pinyon-juniper woodlands. +
Flowering May–Jun. +
Penstemon sect. Albidi +
Penstemon barnebyi +
Penstemon sect. Cristati +
species +