Erigeron subtrinervis |
Erigeron filifolius |
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three-veined fleabane |
Peck's threadleaf fleabane |
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Habit | Perennial from a short, woody base, 1.5-8 dm. tall, the stems clustered, amply leafy, spreading-hairy throughout. | Perennial from a taproot and branched, short woody base, 1-5 dm. tall, the stem densely covered with fine, appressed hairs aligned in one direction. |
Leaves | Leaves triple-nerved, entire, the lower oblanceolate or spatulate, petiolate, mostly deciduous, the other becoming sessile but ample. |
Leaves both basal and cauline, linear or linear-filiform, 1-8 cm. long and 0.3-3 mm. wide, of uniform width. |
Flowers | Heads 1-13 in a open inflorescence; involucre 6-9 mm. high; rays 65-150, blue or rarely white or pink, 9-18 mm. long and 1 mm. wide; pappus 20-30 bristles, a few of the outer ones shorter. |
Heads solitary or several; involucre 4-6 mm. high, with fine, soft hairs or small glands or both; rays 15-125, blue, pink or white, 3-13 mm. long and 1-2 mm. wide; pappus of 20-30 simple hairs. |
Erigeron subtrinervis |
Erigeron filifolius |
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Flowering time | July-September | May-July |
Habitat | Moderately dry, open places at low to middle elevations. | Sagebrush plains, dry slopes, and grasslands. |
Distribution | Occurring on both sides of the Cascades crest in Washington; British Columbia to Washington, east to the Rocky Mountains.
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Occurring east of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to California, east to Montana, Idaho, and Utah.
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Origin | Native | Native |
Conservation status | Not of concern | Not of concern |
Sibling taxa | ||
Web links |
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