Erigeron oreganus |
Erigeron aureus |
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Gorge fleabane, Oregon fleabane |
golden 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 short, branched woody base, 2-15 cm. tall, covered with fine, short hairs. |
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 petiolate, with elliptical to obovate, broadly rounded blade up to 13 mm. wide; cauline leaves few and 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, the disks 7-16 mm. wide; involucre 5-8 mm. high, its bracts loose, equal, herbaceous, often purplish, white-woolly; rays 25-70, yellow, 6-9 mm. long and 1.4-2.5 mm. wide; disk corollas 3.6-4.9 mm. long, yellow; pappus of 10-20 capillary bristles. |
Fruits | Achene |
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Erigeron oreganus |
Erigeron aureus |
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Flowering time | May-September | June-August. |
Habitat | Moist shady cliffs and ledges. | Exposed rocky areas, cliffs, and ridges in subalpine to alpine areas. |
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 on both sides of the Cascades crest in Washington; British Columbia to Washington, east to Alberta.
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Origin | Native | Native |
Conservation status | Threatened in Washington (WANHP) | Not of concern |
Sibling taxa | ||
Web links |