Erigeron oreganus |
Erigeron flettii |
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Gorge fleabane, Oregon fleabane |
Flett's fleabane, Olympic Mt. 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 stout, branched, woody base, 5-15 cm. high, the stem with sparse, spreading 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. |
Leaves mostly basal, spatulate to oblanceolate, up to 5 cm. long and 12 mm. wide, mostly glabrous, with a few hairs on the leaf margins. |
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 disk 10-15 mm. wide; involucre 6-8 mm. high, with a few soft hairs, and sometimes sticky; rays 25-50, white, 7-10 mm. long and 1.5-2.5 mm. wide; disk corollas yellow, 3.5-4.5 mm. long; pappus of 15-20 capillary bristles and numerous short, outer bristles. |
Fruits | Achene |
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Erigeron oreganus |
Erigeron flettii |
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Flowering time | May-September | June-August |
Habitat | Moist shady cliffs and ledges. | Cliffs and other rocky places in the subalpine and alpine. |
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 in the Olympic Mountains in Washington, where endemic.
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Origin | Native | Native |
Conservation status | Threatened in Washington (WANHP) | Review Group 1 in Washington (WANHP) |
Sibling taxa | ||
Web links |