Erigeron elegantulus |
Erigeron corymbosus |
|
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dwarf blue fleabane, volcanic fleabane |
foothill daisy, longleaf fleabane |
|
Habit | Plants perennial, 4–10 cm; taprooted, with branching caudices. | Plants perennial, 15–40 cm; taprooted, often with slender, branching caudices. |
Stems | erect to basally ascending, sparsely to moderately strigose, eglandular. |
erect or ascending, moderately hirsute to villous, 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. |
usually persistent, linear to narrowly oblanceolate, 50–200 × 2–10 mm; margins entire, 1–3 prominent veins; tips usually acute; surfaces moderately to densely strigose, eglandular. |
Cauline leaves | abruptly reduced and usually restricted to basal ? of stem, bases sheathing. |
linear, 15–60 × 1–5 mm, gradually reduced distally. |
Involucres | 3–5 × 8–11 mm. |
4–7 × 8–14 mm. |
Ray florets | 15–30, lavender to purple; rays 3–8 × 0.7–1.3 mm. |
30–60, white to purple; rays 2.5–14 × 1–1.5 mm. |
Disc florets | corollas 2.5–3.5 mm. |
corollas 4–5 mm. |
Phyllaries | in 3–4 unequal series; surfaces sparsely strigose, eglandular. |
in 2–3 series, usually with dark medial area; surfaces moderately to densely hirsute to villous, occasionally glandular. |
Fruits | 1–2 mm, nearly glabrous to sparsely strigose; inner pappi of numerous barbellate bristles. |
2–3 mm, sparsely strigose; inner pappi of numerous barbellate bristles. |
Heads | 1, radiate. |
1–5(10) in corymb-like arrays, radiate. |
2n | =27. |
=18. |
Erigeron elegantulus |
Erigeron corymbosus |
|
Distribution | ||
Discussion | Rocky areas, sagebrush, coniferous forests. Flowering Jun–Aug. 700–2500 m. BR, BW, Casc, Owy. CA. Native. |
Dry open hillsides, sagebrush, pine forests. Flowering Jun–Aug. 200–2500 m. BR, BW, Casc, ECas, Lava, Owy. ID, WA; north to British Columbia, northeast to MT, east to WY, southeast to UT. Native. |
Source | Flora of Oregon, volume 2, page 256 James Riser, Stephen Meyers |
Flora of Oregon, volume 2, page 255 James Riser, Stephen Meyers |
Sibling taxa | ||
Web links |