Penstemon rupicola |
Penstemon triphyllus |
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cliff beardtongue, rock penstemon |
whorled beardtongue |
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Habit | Basally shrubby, mat-forming perennial, the spreading-hairy, erect or ascending stems up to 1 dm. tall. | Taprooted perennial, shrubby at the base, the numerous, slender and brittle stems 2.5-8 dm. tall, puberulent. |
Leaves | Mat leaves thick and firm, glaucous, glabrous or with short, spreading hairs, irregularly serrulate, the broadly elliptic or obovate blade 8-18 mm. long; leaves of the flowering shoots opposite, few, less than 1 cm. long. |
Leaves irregularly arranged, many ternate or whorled, others opposite or single, glabrous or puberulent, all cauline, the lowermost reduced, the others numerous, sessile from a narrow base, linear or narrowly lance-elliptic, up to 5 cm. long and 1 cm. wide, irregularly and sharply toothed. |
Flowers | Inflorescence a compact, few-flowered raceme, glandular-hairy; calyx 6-11 mm. long, the 5 segments narrowly lance-elliptic to ovate-oblong; corolla bright pink to rose-purple, 25-35 mm. long, keeled on the back, usually glabrous inside and out; anthers long-woolly; pollen sacs wholly dehiscent and opening wide enough to form a plane; staminode slender, shorter that the fertile filaments, nearly glabrous. |
Inflorescence a loose panicle, often leafy-bracteate below; calyx 4-6 mm. long, the 5 segments green or purplish, entire, often unequal; corolla blue-lavender to light purple-violet, 13-19 mm. long, weakly bilabiate, glandular-hairy outside and glabrous within, the upper lip cleft more than half its length; anthers 0.9-1.3 mm. long, permanently horseshoe-shaped, the pollen sacs saccate and indehiscent below; staminode exerted, long-bearded half its length. |
Fruits | Capsule |
Capsule 4-6 mm. long |
Penstemon rupicola |
Penstemon triphyllus |
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Flowering time | May-August | May-July |
Habitat | Rock cliffs and rocky slopes from middle elevations in the mountains to the alpine. | Cliff crevices and dry, rocky banks and slopes at low elevations. |
Distribution | Occurring on both sides of the Cascades crest and in the Columbia River Gorge in Washington; Washington to California.
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Occurring chiefly east of the Cascades crest in the southeastern area of Washington; Southeast Washington south to adjacent Oregon and east to adjacent Idaho.
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Origin | Native | Native |
Conservation status | Not of concern | Not of concern |
Sibling taxa | ||
Subordinate taxa | ||
Web links |