Erigeron oreganus |
Erigeron vagus |
|
---|---|---|
Gorge daisy, gorge fleabane, Oregon fleabane |
rambling fleabane |
|
Habit | Plants perennial, 5–15 cm; taprooted, caudices unbranched. | Plants perennial, 3–10 cm; taprooted, caudices branching. |
Stems | decumbent to erect; hirsute with unequal hairs, sparsely glandular. |
erect, nearly glabrous to remotely hirsute, 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, spatulate with 3–5 distal lobes, 6–25 × 3–10 mm; margins entire; surfaces moderately to densely hirsute. |
Cauline leaves | obovate to elliptic; little or not reduced distally; surfaces sparsely to moderately hirsute. |
absent or reduced to linear bracts. |
Involucres | 4–7 × 9–15 mm. |
5–7 × 10–13 mm. |
Ray florets | 30–60, pink to purple; rays 4–5 × 0.5–1 mm. |
25–40, white to lavender to purple; rays 6–9 × 0.5–1.5 mm. |
Disc florets | corollas 3–5 mm. |
2–3 mm. |
Phyllaries | in 2–3 series, pale green with dark green medial stripe; surfaces remotely hirsute, strongly stipitate-glandular. |
in 2 series; purplish to green, with yellow-orange medial stripe; surfaces remotely hirsute to basally villous. |
Fruits | 2–3 mm, moderately strigose; inner pappi of several unbarbed to weakly barbellate twisted bristles. |
2–3 mm, sparsely strigose; inner pappi of numerous barbellate bristles. |
Heads | 1–4, radiate. |
1, radiate. |
2n | =18. |
|
Erigeron oreganus |
Erigeron vagus |
|
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. |
Rocky areas, slopes. Flowering Jun–Aug. 1500–3100 m. BW. CA, NV; southeast to CO. Native. |
Source | Flora of Oregon, volume 2, page 259 James Riser, Stephen Meyers |
Flora of Oregon, volume 2, page 262 James Riser, Stephen Meyers |
Sibling taxa | ||
Web links |