Erigeron elegantulus |
Erigeron cervinus |
|
---|---|---|
dwarf blue fleabane, volcanic fleabane |
Siskiyou daisy, Siskiyou fleabane |
|
Habit | Plants perennial, 4–10 cm; taprooted, with branching caudices. | Plants perennial, 10–45 cm; fibrous-rooted, rhizomatous, occasionally with branching caudices. |
Stems | erect to basally ascending, sparsely to moderately strigose, eglandular. |
erect or ascending, glabrous and mostly eglandular. |
Basal leaves | persistent, linear to filiform, 20–50 × 0.5–1 mm, white, bases sheathing; margins entire; tips round to acute or acuminate; surfaces sparsely to moderately strigose. |
persistent, oblanceolate to obovate, 10–100 × 5–15 mm; margins entire; surfaces glabrous, eglandular. |
Cauline leaves | abruptly reduced and usually restricted to basal ? of stem, bases sheathing. |
oblanceolate to elliptic, 10–50 × 2–10 mm, gradually reduced distally. |
Involucres | 3–5 × 8–11 mm. |
4–6 × 10–13 mm. |
Ray florets | 15–30, lavender to purple; rays 3–8 × 0.7–1.3 mm. |
20–40; corollas white to purple; rays 3–7 × 0.5–1.5 mm. |
Disc florets | corollas 2.5–3.5 mm. |
corollas 3–5 mm. |
Phyllaries | in 3–4 unequal series; surfaces sparsely strigose, eglandular. |
in 2–3 series, usually with dark medial area; surfaces glabrous, densely glandular. |
Fruits | 1–2 mm, nearly glabrous to sparsely strigose; inner pappi of numerous barbellate bristles. |
1.5–2 mm, moderately strigose; inner pappi of numerous barbellate bristles. |
Heads | 1, radiate. |
1–4 in loose corymb-like arrays, radiate. |
2n | =27. |
|
Erigeron elegantulus |
Erigeron cervinus |
|
Distribution | ||
Discussion | Rocky areas, sagebrush, coniferous forests. Flowering Jun–Aug. 700–2500 m. BR, BW, Casc, Owy. CA. Native. |
Streamsides, river bars, wet rocky banks, moist seeps. Flowering May–Aug. 0–1700 m. Sisk. CA. Native. |
Source | Flora of Oregon, volume 2, page 256 James Riser, Stephen Meyers |
Flora of Oregon, volume 2, page 253 James Riser, Stephen Meyers |
Sibling taxa | ||
Synonyms | Erigeron delicatus | |
Web links |