Penstemon richardsonii |
Penstemon richardsonii var. curtiflorus |
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cut-leaf beardtongue, Richardson's beardtongue, Richardson's penstemon, shrubby penstemon |
cutleaf beardtongue |
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Habit | Subshrubs. | |||||||||
Stems | ascending to erect, 20–95 cm, retrorsely hairy, hairs pointed, not glaucous. |
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Leaves | cauline, opposite or subopposite, glabrate or retrorsely hairy, not glaucous; cauline 5–13 pairs, short-petiolate or sessile, 13–70 × 5–30 mm, blade ovate to lanceolate, base tapered, margins laciniate-dentate to irregularly laciniate-pinnatifid, apex obtuse to acute. |
blade ovate to lanceolate, margins laciniate-dentate, sometimes irregularly laciniate-pinnatifid. |
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Thyrses | interrupted, cylindric, 2–25(–48) cm, axis densely glandular-pubescent, verticillasters 3–7(–15), cymes 2–7-flowered, 1 or 2 per node; proximal bracts lanceolate, 7–43 × 2–16 mm; peduncles and pedicels spreading, sparsely to densely glandular-pubescent. |
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Flowers | calyx lobes ovate to lanceolate, 4–7 × 1.3–2.3 mm, glandular-pubescent; corolla bluish to lavender, or pinkish, with reddish purple nectar guides, ventricose-ampliate, 15–32 mm, glandular-pubescent externally, glabrous internally or sparsely to moderately white-lanate abaxially, tube 7–12 mm, throat gradually inflated, 5–14 mm diam., rounded abaxially; stamens: longer pair reaching orifice or exserted, filaments glabrous, pollen sacs parallel, 1.3–2 mm, distal 1/2 indehiscent, sides glabrous, sutures denticulate, teeth to 0.2 mm; staminode 16–23 mm, exserted, 0.3–0.8 mm diam., glabrous or distal 2–8 mm sparsely lanate, hairs yellow, to 2 mm; style 11–23 mm. |
corolla 15–20 mm; staminode glabrous or sparsely hairy distally; style 11–15 mm. |
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Capsules | 5–9 × 4–5 mm. |
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2n | = 16. |
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Penstemon richardsonii |
Penstemon richardsonii var. curtiflorus |
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Phenology | Flowering May–Aug. | |||||||||
Habitat | Talus slopes, cliffs, crevices, basalt. | |||||||||
Elevation | 800–900 m. (2600–3000 ft.) | |||||||||
Distribution |
OR; WA; BC
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OR |
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Discussion | Varieties 3 (3 in the flora). Penstemon richardsonii consists of three weakly differentiated varieties that are partially sympatric on the eastern slope of the Cascade Range. The Okanagan-Coville tribe of northeastern Washington and the Paiute tribe of the Great Basin region used Penstemon richardsonii as a drug plant to treat typhoid fever and as a dermatological aid (D. E. Moerman 1998). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Variety curtiflorus is known from Gilliam, Wasco, and Wheeler counties in north-central Oregon. D. D. Keck and A. Cronquist (1957) cited a specimen from Wheeler County (L. F. Henderson 5503, CAS) as probably this taxon, noting the flowers were immature. A duplicate specimen at MO clearly is var. curtiflorus, with corollas 15–18 mm and staminodes with one or two hairs near their tips. An anomalous specimen at MO (E. A. Purer 7811) collected in Yakima County, Washington, appears close to var. curtiflorus, with corollas 18–20 mm, staminodes sparsely lanate, and leaf margins dentate. This collection was made about 120 km north of the northernmost collections of the variety. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 17, p. 241. | FNA vol. 17, p. 242. | ||||||||
Parent taxa | Plantaginaceae > Penstemon > subg. Penstemon > sect. Saccanthera | Plantaginaceae > Penstemon > subg. Penstemon > sect. Saccanthera > Penstemon richardsonii | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | P. richardsonii subsp. curtiflorus | |||||||||
Name authority | Douglas ex Lindley: Bot. Reg. 13: plate 1121. (1828) — (as Pentstemon) | (D. D. Keck) Cronquist: in C. L. Hitchcock et al., Vasc. Fl. Pacif. N.W. 4: 401. (1959) | ||||||||
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