Erigeron asperugineus

(D. C. Eaton) A. Gray

Notes Compositae, 91. 1880.

Common names: Idaho fleabane
Endemic
Basionym: Aster asperugineus D. C. Eaton in S. Watson, Botany (Fortieth Parallel), 142. 1871
Treatment appears in FNA Volume 20. Treatment on page 306. Mentioned on page 273, 307.

Perennials, 2–20 cm; slenderly taprooted, caudices usually branched. Stems usually decumbent-ascending, moderately to densely hirsutulous to hirtellous (hairs usually deflexed), eglandular. Leaves basal (persistent) and cauline; basal blades 1-nerved or weakly 3-nerved, spatulate, rhombic-elliptic to obovate or oblanceolate (often folding), 20–50 (–80) × 3–10 (–13) mm, cauline gradually or abruptly reduced and linear distally (bases abruptly contracted to petioles), margins entire, faces moderately to densely hirsutulous, eglandular. Heads 1 (–2). Involucres 5–9 × 7–14 mm. Phyllaries in 3–4 series (tips and margins often purple), sparsely to moderately hirsutulous, densely minutely glandular. Ray-florets 10–25; corollas deep blue or violet to rose-purple, 5–10 mm, laminae not coiling or reflexing. Disc corollas 4.2–6.3 mm. Cypselae 2.5–3.1 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 20–30 bristles.


Phenology: Flowering Jul–Aug.
Habitat: Rocky or gravelly slopes and ridges, talus, sagebrush or meadow edges, limber pine, whitebark pine, fir-pine
Elevation: (2100–)2500–3300 m

Discussion

Erigeron asperugineus sometimes is very similar in aspect to E. clokeyi var. pinzliae; the latter differs in its narrower leaves, coarsely ciliate petioles, broader and non-reflexing rays, and shorter cypselae.

Selected References

None.

Lower Taxa

None.
... more about "Erigeron asperugineus"
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) A. Gray +
3-nerved +  and 1-nerved +
5 cm50 mm <br />0.05 m <br /> (8 cm80 mm <br />0.08 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
rhombic-elliptic +  and obovate or oblanceolate +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
decurrent +
Aster asperugineus +
linear;lanceolate oblanceolate or spatulate +
rugulose +  and muricate +
Idaho fleabane +
not 2-lipped +  and actinomorphic +
violet +  and rose-purple +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
subterete +, oblong +  and oblong-obovoid compressed +
fertile +  and bisexual +
0.42 cm4.2 mm <br />0.0042 m <br /> (0.63 cm6.3 mm <br />0.0063 m <br />) +
fertile +  and bisexual +
Idaho +, Mont. +, Nev. +  and Utah. +
(2100–)2500–3300 m +
strigose +  and hirsutulous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Rocky or gravelly slopes and ridges, talus, sagebrush or meadow edges, limber pine, whitebark pine, fir-pine +
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 /> (0.9 cm9 mm <br />0.009 m <br />) +
turbinate;hemispheric +
0.7 cm7 mm <br />0.007 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
not coiling +
petiolate +  and sessile +
cauline +  and basal +
erect;spreading +
deltate +
Not (?) +  and Scarious (?) +
2-carpellate +
Flowering Jul–Aug. +
3-nerved +  and 1-nerved +
narrowly elliptic +  and linear-lanceolate +
Notes Compositae, +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
prostrate +  and decumbent +
decumbent-ascending +
appendaged +  and truncate +
papillate +  and smooth +
Achaetogeron +  and Trimorpha +
Erigeron asperugineus +
Erigeron +
species +
inflated +  and tubular +
90 cm900 mm <br />0.9 m <br /> (100 cm1,000 mm <br />1 m <br />) +
2 cm20 mm <br />0.02 m <br /> (20 cm200 mm <br />0.2 m <br />) +
tree +, shrub +  and subshrub +