Penstemon glandulosus |
Penstemon glandulosus var. chelanensis |
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glandular penstemon, sticky-stem beardtongue, sticky-stem penstemon |
Chelan pestemon, sticky-stem penstemon |
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Habit | Herbs. | |||||
Stems | ascending to erect, (30–)40–100 cm, viscid glandular-pubescent, not glaucous. |
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Leaves | basal and cauline, opposite, viscid glandular-pubescent, not glaucous; basal and proximal cauline 25–120(–260) × 7–20(–65) mm, blade elliptic to lanceolate, base tapered, margins entire, subentire, or irregularly serrate to dentate, apex acute to acuminate; cauline 4–10 pairs, sessile, 32–80(–120) × 12–45 mm, blade ovate to obovate, elliptic, or lanceolate, base tapered to cordate-clasping, margins entire or subentire to irregularly serrate to dentate, apex obtuse to acute or acuminate. |
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Basal leaves | blade margins entire or subentire. |
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Thyrses | interrupted, cylindric, (5–)8–31 cm, axis viscid glandular-pubescent, verticillasters 3–7, cymes (1 or)2–8-flowered, 2 per node; proximal bracts ovate, 18–60 × 11–44 mm; peduncles and pedicels ascending to erect, viscid glandular-pubescent. |
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Flowers | calyx lobes lanceolate, 9–15 × 2.3–3.8 mm, viscid glandular-pubescent; corolla lavender to bluish lavender or purple, with dark violet nectar guides, ampliate, (28–)30–40 mm, glandular-pubescent externally, sparsely to moderately white-pubescent internally abaxially, tube 9–11 mm, throat gradually inflated, 12–15 mm diam., rounded abaxially; stamens included, filaments glabrous, pollen sacs parallel, 1.6–2.2 mm, distal 1/2 indehiscent, sides glabrous, sutures denticulate, teeth to 0.2 mm; staminode 22–26 mm, exserted, 0.8–1 mm diam., glabrous, rarely distal 2–4 mm sparsely pubescent, hairs yellow, to 0.4 mm; style 20–26 mm. |
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Capsules | 9–13 × 5–6.5 mm. |
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Penstemon glandulosus |
Penstemon glandulosus var. chelanensis |
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Phenology | Flowering Apr–Jul. | |||||
Habitat | Rocky sagebrush slopes, hillsides, and banks. | |||||
Elevation | 200–2000 m. (700–6600 ft.) | |||||
Distribution |
ID; OR; WA
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OR; WA |
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Discussion | Varieties 2 (2 in the flora). Two allopatric varieties of Penstemon glandulosus have been distinguished based on basal leaf morphology. Leaf margins occasionally vary from entire to serrate or dentate among individuals in some populations, but the general pattern of leaf variation does appear to be geographically correlated. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Variety chelanensis is known from the eastern slope of the Cascade Range in Benton, Chelan, Kittitas, Klickitat, and Yakima counties, Washington, and Hood River and Wasco counties, Oregon. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 17, p. 233. | FNA vol. 17, p. 234. | ||||
Parent taxa | Plantaginaceae > Penstemon > subg. Penstemon > sect. Saccanthera | Plantaginaceae > Penstemon > subg. Penstemon > sect. Saccanthera > Penstemon glandulosus | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | P. glandulosus subsp. chelanensis | |||||
Name authority | Douglas ex Lindley: Edwards’s Bot. Reg. 15: plate 1262. (1829) — (as Pentstemon glandulosum) | (D. D. Keck) Cronquist: in C. L. Hitchcock et al., Vasc. Pl. Pacif. N.W. 4: 388. (1959) | ||||
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