Erigeron ursinus

D. C. Eaton

in S. Watson, Botany (Fortieth Parallel), 148. 1871.

Common names: Bear River fleabane
IllustratedEndemic
Synonyms: Erigeron ursinus var. meyerae S. L. Welsh
Treatment appears in FNA Volume 20. Treatment on page 335. Mentioned on page 266.

Perennials, (1.5–)5–25(–30) cm; rhizomatous, fibrous-rooted, forming diffuse systems of slender, rhizomelike caudex branches. Stems ascending (bases usually purplish), glabrous or sparsely strigose (or hairs loosely spreading), sometimes glandular near heads. Leaves basal (persistent) and cauline; basal (purplish) and proximal blades narrowly oblanceolate to oblong, 20–120 × 2–11 mm, cauline reduced distally, margins entire, ciliate, faces glabrous or loosely strigose, eglandular. Heads 1(–3). Involucres 5–7 × 9–19 mm. Phyllaries in 2–3(–4) series (margins and tips often purplish, loose, linear-lanceolate, apices spreading), sparsely to moderately villous to hirsuto-villous, densely minutely glandular. Ray florets 30–100; corollas pink to bluish purple, 6–15 mm, laminae not reflexing or coiling, sometimes tardily coiling. Disc corollas 3.2–4.7 mm. Cypselae 1.5–2 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 10–20 bristles. 2n = 18.


Phenology: Flowering Jul–Sep.
Habitat: Meadows and grassy openings, sagebrush, aspen, lodgepole pine, pine-fir, spruce-fir
Elevation: 2400–3100(–3700) m

Distribution

V20-768-distribution-map.gif

Ariz., Colo., Idaho, Mont., Nev., N.Mex., Utah, Wyo.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Erigeron ursinus"
Guy L. Nesom +
D. C. Eaton +
Bear River fleabane +
Ariz. +, Colo. +, Idaho +, Mont. +, Nev. +, N.Mex. +, Utah +  and Wyo. +
2400–3100(–3700) m +
Meadows and grassy openings, sagebrush, aspen, lodgepole pine, pine-fir, spruce-fir +
Flowering Jul–Sep. +
in S. Watson, Botany (Fortieth Parallel), +
Illustrated +  and Endemic +
Erigeron ursinus var. meyerae +
Erigeron ursinus +
Erigeron +
species +