Erigeron chrysopsidis |
Erigeron eatonii |
|
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dwarf yellow fleabane |
Eaton's fleabane |
|
Habit | Plants perennial, 3–20 cm; taprooted, usually with many woody, branching caudices. | Plants perennial, 4–28 cm; taprooted, caudices branching or not. |
Stems | erect; hirsute, eglandular to minutely glandular. |
erect to ascending or decumbent, usually strigose to occasionally villous, becoming woolly distally, sometimes minutely glandular. |
Basal leaves | persistent in dense clusters, linear to narrowly oblanceolate, 10–80 × 1–3 mm; margins entire with hispid hairs; surfaces hirsute to hispid, sometimes nearing strigose. |
persistent, linear to narrowly oblanceolate, 20–150 × 2–10 mm; margins entire, usually with 3 distinct basal veins; tips usually rounded to acute or acuminate; surfaces strigose to hirsute, eglandular. |
Cauline leaves | abruptly reduced to (0)1–3 linear bracts. |
gradually to abruptly reduced distally, sometimes becoming linear and bract-like. |
Involucres | 4–7 × 10–16 mm. |
4–6 × 8–15 mm. |
Ray florets | 20–60; corollas with well-developed yellow rays, 4–8 × 0.5–2 mm, or tubular and short, or rays lacking. |
20–45, white to purple; rays 3–8 × 0.8–2.5 mm. |
Disc florets | corollas 4–5 mm. |
corollas 3–4 mm. |
Phyllaries | in 2–3 series, sparsely to moderately hispid-villous, often minutely glandular. |
in 2–3 series; surfaces sparsely sericeous to densely villous, sometimes minutely glandular. |
Fruits | 2–3 mm, moderately strigose; inner pappi of numerous barbellate bristles. |
2–3 mm, glabrate to remotely strigose; inner pappi of numerous barbellate bristles. |
Heads | 1, radiate or disciform. |
1–3 in scape- or corymb-like arrays, radiate. |
Erigeron chrysopsidis |
Erigeron eatonii |
|
Distribution | ||
Discussion | Western United States. 3 varieties. |
Western United States. 6 varieties; 3 varieties treated in Flora. |
Source | Flora of Oregon, volume 2, page 254 James Riser, Stephen Meyers |
Flora of Oregon, volume 2, page 256 James Riser, Stephen Meyers |
Sibling taxa | ||
Subordinate taxa | ||
Web links |