Erigeron simplex(synonym of Erigeron grandiflorus) |
Erigeron bloomeri |
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one-stem fleabane |
Bloomer's fleabane |
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Habit | Plants perennial, 3–15 cm; fibrous-rooted, rhizomatous, caudices branched or not. | Plants perennial, 3–22 cm; taprooted with branching caudices. |
Stems | erect, sparsely to moderately villous, eglandular. |
erect, glabrous to densely strigose, eglandular. |
Basal leaves | persistent, oblanceolate to spatulate, 50–350 × 30–90 mm; margins entire, sometimes moderately ciliate; surfaces glabrous to glabrate. |
persistent, linear to very narrowly oblanceolate, 10–80 × 0.7–3 mm, bases white-indurate, often tinged with purple; margins entire; surfaces glabrous to densely strigose, eglandular. |
Cauline leaves | obovate to linear, abruptly reduced distally; surfaces usually hirsute. |
linear, 1–5 × 0.5–2 mm, abruptly reduced. |
Involucres | 3–7 × 8–16 mm. |
5–8 × 6–16 mm. |
Ray florets | 30–50+, lavender to purple; rays 5–10 × 0.6–2.2 mm. |
0. |
Disc florets | 2–3 mm. |
corollas 4–6 mm; pale to bright yellow; lobes often purple-tipped. |
Phyllaries | in 2 series; margins usually ragged; surfaces moderately to densely villous. |
in 2–3 series, with dark medial area; surfaces glabrous to densely woolly-villous, minutely glandular to eglandular. |
Fruits | 1–2 mm, sparsely strigose; inner pappi of numerous barbellate bristles. |
3–5 mm, glabrous with few sericeous hairs at distal ends below inner pappi; inner pappi of numerous barbellate bristles. |
Heads | 1, radiate. |
1, discoid. |
Erigeron simplex |
Erigeron bloomeri |
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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. |
Western United States. 2 varieties. |
Source | Flora of Oregon, volume 2, page 261 James Riser, Stephen Meyers |
Flora of Oregon, volume 2, page 253 James Riser, Stephen Meyers |
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | Erigeron grandiflorus | |
Web links |