Erigeron oreganus |
Erigeron salishii |
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Gorge fleabane, Oregon fleabane |
Salish fleabane, star peak fleabane |
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Habit | Perennial from a stout, woody base and root, the lax stem 5-15 cm. long, covered with glands and loose, sticky hairs. | Perennial from a taproot and branched crown, forming dense cushions, the simple, erect, scape-like stems 1.5-7 cm. high, pubescent. |
Leaves | Basal leaves tufted, spatulate to obovate, coarsely toothed or incised, up to 9 cm. long and 2.5 cm. wide; cauline leaves well developed, broadly lanceolate to ovate or elliptic, up to 4 cm. long and 1 cm. wide. |
Leaves all basal on slender petioles; leaf blades obovate-spatulate, 3-16 mm. long and 3-6 mm. wide, the bases abruptly expanded, the margins usually with 3 rounded lobes and marginal hairs, the faces with stiff hairs. |
Flowers | Heads 1-several in a leafy inflorescence, the disk 9-13 mm. wide; involucre 5-7 mm. high, the bracts loose, equal, thin and green; rays 30-60, pink or white to bluish; disk corollas 3.4-4.7 mm. long, yellow; pappus simple, of 15-20 bristles that are curled and twisted above. |
Heads solitary, the involucres 8-11 mm long, the bracts in 2-3 series, usually purplish, especially the tips; ray flowers 15-32, white to bluish, 6-10 mm. long, spreading; disk flowers yellow; pappus of capillary bristles |
Fruits | Achenes 2-2.6 mm. long, 2-nerved. |
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Erigeron oreganus |
Erigeron salishii |
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Flowering time | May-September | July-September |
Habitat | Moist shady cliffs and ledges. | Cliffs, ridges, ledges and gravelly slopes at mid- to high elevations in the mountains. |
Distribution | Occurring in the Columbia River Gorge in Washington; Columbia River Gorge in Washington to adjacent Gorge area in Oregon.
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Ocurring east of the Cascades crest in the North and Central Cascade Mountains in Washington; southwestern British Columbia to central Washington.
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Origin | Native | Native |
Conservation status | Threatened in Washington (WANHP) | Sensitive in Washington (WANHP) |
Sibling taxa | ||
Web links |