Erigeron simplex(synonym of Erigeron grandiflorus) |
Erigeron glacialis var. glacialis(synonym of Erigeron ursinus) |
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one-stem fleabane |
peregrine fleabane, subalpine fleabane |
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Habit | Plants perennial, 3–15 cm; fibrous-rooted, rhizomatous, caudices branched or not. | Plants perennial, 20–50 cm; fibrous-rooted, often rhizomatous, caudices usually simple. |
Stems | erect, sparsely to moderately villous, eglandular. |
erect, nearly glabrous, or sparsely hirsute proximally to densely strigillose or pilose distally, eglandular. |
Basal leaves | persistent, oblanceolate to spatulate, 50–350 × 30–90 mm; margins entire, sometimes moderately ciliate; surfaces glabrous to glabrate. |
persistent, linear-oblanceolate to broadly oblanceolate, 30–150 × 8–30 mm; margins entire; surfaces glabrous, eglandular. |
Cauline leaves | obovate to linear, abruptly reduced distally; surfaces usually hirsute. |
lanceolate to oblanceolate, 10–80 × 3–30 cm, reduced distally, bases occasionally clasping; surfaces glabrous. |
Involucres | 3–7 × 8–16 mm. |
5–8 × 12–15 mm. |
Ray florets | 30–50+, lavender to purple; rays 5–10 × 0.6–2.2 mm. |
30–60, lavender to purple; rays 5–9 × 1.5–4 mm. |
Disc florets | 2–3 mm. |
corollas 4–6 mm. |
Phyllaries | in 2 series; margins usually ragged; surfaces moderately to densely villous. |
in 2–3 series, with dark medial area, glabrous, densely glandular. |
Fruits | 1–2 mm, sparsely strigose; inner pappi of numerous barbellate bristles. |
2–4 mm, sparsely to moderately strigose; inner pappi of numerous barbellate bristles. |
Heads | 1, radiate. |
1(4), radiate. |
Erigeron simplex |
Erigeron glacialis var. glacialis |
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Distribution | ||
Discussion | Rocky areas, meadows. Flowering Jul–Aug. 2400–3000 m. BW. ID, NV; northeast to MT, east to WY, southeast to CO, NM. Native. |
Meadows, streamsides, lakeshores, bogs. Flowering Jun–Sep. 800–3200 m. BR, BW, Casc, CR, ECas. CA, ID, NV, WA; north to AK, northeast to Alberta, east to WY, southeast to NM. Native. |
Source | Flora of Oregon, volume 2, page 261 James Riser, Stephen Meyers |
Flora of Oregon, volume 2 draft James Riser, Stephen Meyers |
Sibling taxa | ||
Synonyms | Erigeron grandiflorus | Erigeron peregrinus ssp. callianthemus, Erigeron peregrinus var. angustifolius, Erigeron peregrinus var. callianthemus, Erigeron peregrinus var. eucallianthemus, Erigeron peregrinus var. scaposus, Erigeron ursinus |
Web links |