Erigeron oreganus |
Erigeron eatonii |
|
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Gorge daisy, gorge fleabane, Oregon fleabane |
Eaton's fleabane |
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Habit | Plants perennial, 5–15 cm; taprooted, caudices unbranched. | Plants perennial, 4–28 cm; taprooted, caudices branching or not. |
Stems | decumbent to erect; hirsute with unequal hairs, sparsely glandular. |
erect to ascending or decumbent, usually strigose to occasionally villous, becoming woolly distally, sometimes minutely glandular. |
Basal leaves | persistent, obovate, 15–90 × 5–20 mm; margins coarsely serrate to shallowly lobulate; surfaces sparsely to moderately hirsute to strigose. |
persistent, linear to narrowly oblanceolate, 20–150 × 2–10 mm; margins entire, usually with 3 distinct basal veins; tips usually rounded to acute or acuminate; surfaces strigose to hirsute, eglandular. |
Cauline leaves | obovate to elliptic; little or not reduced distally; surfaces sparsely to moderately hirsute. |
gradually to abruptly reduced distally, sometimes becoming linear and bract-like. |
Involucres | 4–7 × 9–15 mm. |
4–6 × 8–15 mm. |
Ray florets | 30–60, pink to purple; rays 4–5 × 0.5–1 mm. |
20–45, white to purple; rays 3–8 × 0.8–2.5 mm. |
Disc florets | corollas 3–5 mm. |
corollas 3–4 mm. |
Phyllaries | in 2–3 series, pale green with dark green medial stripe; surfaces remotely hirsute, strongly stipitate-glandular. |
in 2–3 series; surfaces sparsely sericeous to densely villous, sometimes minutely glandular. |
Fruits | 2–3 mm, moderately strigose; inner pappi of several unbarbed to weakly barbellate twisted bristles. |
2–3 mm, glabrate to remotely strigose; inner pappi of numerous barbellate bristles. |
Heads | 1–4, radiate. |
1–3 in scape- or corymb-like arrays, radiate. |
Erigeron oreganus |
Erigeron eatonii |
|
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. |
Western United States. 6 varieties; 3 varieties treated in Flora. |
Source | Flora of Oregon, volume 2, page 259 James Riser, Stephen Meyers |
Flora of Oregon, volume 2, page 256 James Riser, Stephen Meyers |
Sibling taxa | ||
Subordinate taxa | ||
Web links |