Erigeron utahensis

A. Gray

Notes Compositae, 89. 1880.

Common names: Utah fleabane
IllustratedEndemic
Basionym: Erigeron stenophyllus A. Gray in War Department [U.S.], Pacif. Railr. Rep. 4(5): 98. 1857 (as stenophyllum),
Synonyms: Erigeron utahensis var. tetrapleuris (A. Gray) Cronquist
Treatment appears in FNA Volume 20. Treatment on page 296. Mentioned on page 275, 297.

Perennials, 10–60 cm; taprooted, caudices branched. Stems erect (usually gray-green to whitish, especially proximally), densely and closely strigose, eglandular. Leaves basal (mostly withering by flowering, not forming conspicuous tufts) and cauline (leaf bases broadened or not, not thickened and whitish-indurate); basal and proximal cauline blades linear-oblanceolate to narrowly spatulate, 15–100 × 1–6 mm, cauline gradually reduced distally, ending well proximal to heads, margins entire, faces densely and closely strigose, eglandular. Heads 1–3(–5), from branches from midstem distally. Involucres 5–7 × 7–12(–15) mm. Phyllaries in 3–4 series, loosely hirsuto-strigose, often minutely glandular. Ray florets 28–40; corollas white, pink, or blue, 10–18(–20) mm, laminae coiling. Disc corollas 3–4.6 mm (sparsely strigoso-villous, hairs needlelike). Cypselae 2–2.5 mm, 4(–6)-nerved, faces sparsely strigose; pappi: outer of inconspicuous setae, inner of 20–35 bristles. 2n = 18, 36.


Phenology: Flowering mid Apr–Jun(–Jul).
Habitat: Rocky slopes, cliff bases, ledges, and crevices, sandstone outcrops and terraces, sandy soils, gravelly limestone, shale, cottonwood flood plains, creosote bush, blackbrush, blackbrush–Joshua tree, warm desert shrub, salt desert shrub, mountain brush, pinyon-juniper, oak-maple-aspen
Elevation: 800–2100(–2500) m

Distribution

V20-629-distribution-map.gif

Ariz., Calif., Colo., N.Mex., Utah.

Discussion

Erigeron utahensis should be expected to occur in southern Nevada.

Selected References

None.

Lower Taxa

None.
... more about "Erigeron utahensis"
Guy L. Nesom +
A. Gray +
Erigeron stenophyllus +
Utah fleabane +
Ariz. +, Calif. +, Colo. +, N.Mex. +  and Utah. +
800–2100(–2500) m +
Rocky slopes, cliff bases, ledges, and creRocky slopes, cliff bases, ledges, and crevices, sandstone outcrops and terraces, sandy soils, gravelly limestone, shale, cottonwood flood plains, creosote bush, blackbrush, blackbrush–Joshua tree, warm desert shrub, salt desert shrub, mountain brush, pinyon-juniper, oak-maple-aspenain brush, pinyon-juniper, oak-maple-aspen +
Flowering mid Apr–Jun(–Jul). +
Notes Compositae, +
Illustrated +  and Endemic +
Erigeron utahensis var. tetrapleuris +
Erigeron utahensis +
Erigeron +
species +