Penstemon lyallii

(A. Gray) A. Gray in A. Gray et al.
Syn. Fl. N. Amer. ed. 2, 2(1): 440. 1886.
Common names: Lyall’s beardtongue
Endemic
Basionym: Penstemon menziesii var. lyallii A. Gray Proc. Amer. Acad. Arts 6: 76. 1862
Treatment appears in FNA Volume 17. Treatment on page 89. Mentioned on page 85.

Herbs. Stems ascending to erect, (18–)30–80 cm, puberulent or retrorsely hairy proximally, puberulent or glandular-pubescent distally, not glaucous. Leaves deciduous, 8–13 pairs, short-petiolate or sessile, 23–130 × 3–20 mm, blade lanceolate, rarely linear, base tapered, margins entire or remotely serrate, apex acute to acuminate, rarely obtuse, glabrous or puberulent to pubescent, not glaucous. Thyrses interrupted, ± secund, (3–)6–15(–28) cm, axis sparsely to moderately glandular-pubescent, verticillasters 3–7, cymes 2–7-flowered; proximal bracts lanceolate to linear, (5–)15–80 × (1–)2–8(–20) mm; peduncles and pedicels spreading or ascending, glandular-pubescent. Flowers: calyx lobes lanceolate, 7–16 × 2–4 mm, glandular-pubescent; corolla lavender to purple, unlined internally or lined with faint lavender nectar guides abaxially, nearly personate, funnelform, 35–46 mm, glabrous externally, moderately white-lanate internally abaxially, tube 8–14 mm, throat 8–12 mm diam.; stamens included, pollen sacs 1.1–1.8 mm; staminode 10–13 mm, flattened distally, 0.2–0.3 mm diam., tip straight, glabrous; style 30–40 mm. Capsules 10–14 × 5–7 mm.


Phenology: Flowering Jun–Aug.
Habitat: Rocky slopes, rock outcrops, gravel bars along streams.
Elevation: 600–2400 m.

Distribution

Alta., B.C., Idaho, Mont., Wash.

Discussion

Penstemon lyallii is known from the Central, Northern, and Canadian Rocky mountains in southwestern Alberta, southeastern British Columbia, northern Idaho, northwestern Montana, and northeastern Washington.

Selected References

None.

Lower Taxa

None.

... more about "Penstemon lyallii"
Craig C. Freeman +
(A. Gray) A. Gray in A. Gray et al. +
Penstemon menziesii var. lyallii +
Lyall’s beardtongue +
Alta. +, B.C. +, Idaho +, Mont. +  and Wash. +
600–2400 m. +
Rocky slopes, rock outcrops, gravel bars along streams. +
Flowering Jun–Aug. +
Syn. Fl. N. Amer. ed. +
Penstemon lyallii +
Penstemon sect. Erianthera +
species +