Erigeron ursinus

D. C. Eaton in S. Watson

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"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
paniculiform +, corymbiform +  and loose +
indeterminate +  and determinate +
Guy L. Nesom +
D. C. Eaton in S. Watson +
2 cm20 mm <br />0.02 m <br /> (12 cm120 mm <br />0.12 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
decurrent +
linear;lanceolate oblanceolate or spatulate +
rugulose +  and muricate +
Bear River fleabane +
not 2-lipped +  and actinomorphic +
pink +  and bluish purple +
0.6 cm6 mm <br />0.006 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
subterete +, oblong +  and oblong-obovoid compressed +
fertile +  and bisexual +
0.32 cm3.2 mm <br />0.0032 m <br /> (0.47 cm4.7 mm <br />0.0047 m <br />) +
fertile +  and bisexual +
Ariz. +, Colo. +, Idaho +, Mont. +, Nev. +, N.Mex. +, Utah +  and Wyo. +
2400–3100(–3700) m +
strigose +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Meadows and grassy openings, sagebrush, aspen, lodgepole pine, pine-fir, spruce-fir +
disciform +  and discoid +
in loose , corymbiform or paniculiform arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
turbinate;hemispheric +
0.9 cm9 mm <br />0.009 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +
not reflexing +
petiolate +  and sessile +
cauline +  and basal +
erect;spreading +
deltate +
Not (?) +  and Scarious (?) +
2-carpellate +
Flowering Jul–Sep. +
3-nerved +  and 1-nerved +
villous +  and hirsuto-villous +
narrowly elliptic +  and linear-lanceolate +
in S. Watson, Botany (Fortieth Parallel), +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
Illustrated +  and Endemic +
branched +  and simple +
prostrate +  and decumbent +
appendaged +  and truncate +
papillate +  and smooth +
Erigeron ursinus var. meyerae +
Erigeron ursinus +
Erigeron +
species +
inflated +  and tubular +
fibrous-rooted +  and rhizomatous +
25 cm250 mm <br />0.25 m <br /> (30 cm300 mm <br />0.3 m <br />) +
5 cm50 mm <br />0.05 m <br /> (25 cm250 mm <br />0.25 m <br />) +
tree +, shrub +  and subshrub +