Erigeron oreganus |
Erigeron poliospermus |
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Gorge fleabane, Oregon fleabane |
hairy-seeded daisy, cushion 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. | Taprooted perennial with short-branched, woody base; stems to 15 cm. high; plants more or less spreading-hairy and glandular throughout. |
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. |
Basal leaves linear-oblanceolate to spatulate, up to 8 cm. long and 12 mm. wide, the cauline leaves reduced. |
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, hemispheric, the disk 9-20 mm. wide; involucre 5-9 mm. high; rays 15-45, pale pink or purple to deep violet, 4-15 mm. long and 1.3-3.6 mm. wide; pappus of 20-30 capillary bristles. |
Fruits | Achenes densely covered with long, silky hairs. |
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Erigeron oreganus |
Erigeron poliospermus |
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Flowering time | May-September | April-June |
Habitat | Moist shady cliffs and ledges. | Dry, open, typically rocky areas, often with sagebrush. |
Distribution | Occurring in the Columbia River Gorge in Washington; Columbia River Gorge in Washington to adjacent Gorge area in Oregon.
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Occurring east of the Cascades crest in Washington; British Columbia to Oregon, east to western Idaho.
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Origin | Native | Native |
Conservation status | Threatened in Washington (WANHP) | Not of concern |
Sibling taxa | ||
Subordinate taxa | ||
Web links |
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