Erigeron speciosus(synonym of Erigeron subtrinervis) |
Erigeron corymbosus |
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showy daisy, showy fleabane |
foothill daisy, longleaf fleabane |
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Habit | Plants perennial, 15–75 cm; rhizomatous, fibrous-rooted, caudices branching. | Plants perennial, 15–40 cm; taprooted, often with slender, branching caudices. |
Stems | erect; surfaces glabrous to rarely remotely hirsute, sometimes minutely glandular distally. |
erect or ascending, moderately hirsute to villous, eglandular. |
Basal leaves | usually withering by flowering, oblanceolate to spatulate. |
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 | lanceolate, 20–80 × 5–15 mm, gradually reduced distally, bases ± clasping; margins entire, usually long-ciliate; surfaces glabrous, rarely remotely strigose. |
linear, 15–60 × 1–5 mm, gradually reduced distally. |
Involucres | 3–7 × 11–16 mm. |
4–7 × 8–14 mm. |
Ray florets | 40–115+, lavender to purple; rays 7–11 × 0.7–1.5 mm. |
30–60, white to purple; rays 2.5–14 × 1–1.5 mm. |
Disc florets | 2–3 mm. |
corollas 4–5 mm. |
Phyllaries | in 2–3+ series, usually with orange stripe; surfaces basally hirsute to villous, occasionally minutely glandular. |
in 2–3 series, usually with dark medial area; surfaces moderately to densely hirsute to villous, occasionally glandular. |
Fruits | 2–3 mm, glabrous to sparsely strigose; inner pappi of numerous barbellate bristles. |
2–3 mm, sparsely strigose; inner pappi of numerous barbellate bristles. |
Heads | 1–5+ in corymb-like arrays, radiate. |
1–5(10) in corymb-like arrays, radiate. |
2n | =18. |
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Erigeron speciosus |
Erigeron corymbosus |
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Distribution | ||
Discussion | Conifer forests, moist slopes, riverbanks, wet meadows. Flowering Jun–Sep. 50–2500 m. BR, BW, CR, WV. ID, NV, WA; north to British Columbia, northeast to Alberta, east to NE, southeast to NM. 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 draft James Riser, Stephen Meyers |
Flora of Oregon, volume 2, page 255 James Riser, Stephen Meyers |
Sibling taxa | ||
Synonyms | Erigeron speciosus var. macranthus, Erigeron speciosus var. speciosus, Erigeron subtrinervis | |
Web links |