Erigeron oreganus |
Erigeron chrysopsidis var. austiniae(synonym of Erigeron austiniae) |
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Gorge daisy, gorge fleabane, Oregon fleabane |
Austin's fleabane |
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Habit | Plants perennial, 5–15 cm; taprooted, caudices unbranched. | |
Stems | decumbent to erect; hirsute with unequal hairs, sparsely glandular. |
hirsute-villous. |
Basal leaves | persistent, obovate, 15–90 × 5–20 mm; margins coarsely serrate to shallowly lobulate; surfaces sparsely to moderately hirsute to strigose. |
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Cauline leaves | obovate to elliptic; little or not reduced distally; surfaces sparsely to moderately hirsute. |
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Involucres | 4–7 × 9–15 mm. |
4.5–6 mm. |
Ray florets | 30–60, pink to purple; rays 4–5 × 0.5–1 mm. |
rays 0 or minute. |
Disc florets | corollas 3–5 mm. |
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Phyllaries | in 2–3 series, pale green with dark green medial stripe; surfaces remotely hirsute, strongly stipitate-glandular. |
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Fruits | 2–3 mm, moderately strigose; inner pappi of several unbarbed to weakly barbellate twisted bristles. |
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Heads | 1–4, radiate. |
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2n | =18. |
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Erigeron oreganus |
Erigeron chrysopsidis var. austiniae |
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Distribution | ||
Discussion | Shady cliffs, rocky slopes, crevices. Flowering May–Aug. 100–400 m. Casc. WA. Native. This uncommon species is found only in the Columbia River Gorge. |
Ridges, crevices, sagebrush. Flowering May–Jul. 700–1900 m. BR, BW, ECas, Owy. CA, ID, NV. Native. |
Source | Flora of Oregon, volume 2, page 259 James Riser, Stephen Meyers |
Flora of Oregon, volume 2, page 254 James Riser, Stephen Meyers |
Sibling taxa | ||
Synonyms | Erigeron austiniae, Erigeron chrysopsidis ssp. austiniae | |
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