Erigeron arenarioides

(D. C. Eaton ex A. Gray) A. Gray ex Rydberg

Fl. Rocky Mts., 1067. 1917.

Common names: Wasatch fleabane
IllustratedEndemic
Basionym: Aster arenarioides D. C. Eaton ex A. Gray Proc. Amer. Acad. Arts 8: 647. 1873
Treatment appears in FNA Volume 20. Treatment on page 292. Mentioned on page 260, 272.

Perennials, 6–25 (–30) cm; taprooted, caudex branches relatively thick, retaining old leaf-bases. Stems erect or ascending, wiry, glabrous, usually eglandular, sometimes minutely glandular distally. Leaves basal (usually persistent) and cauline; basal blades linear-oblanceolate to linear or filiform (usually folding), 15–60 (–80) × 0.5–2 (–5) mm, cauline gradually reduced distally, margins entire, sometimes sparsely ciliate (cilia ascending-appressed), faces abaxially glabrous, adaxially sparsely strigose, eglandular. Heads 1–3 (–9). Involucres 4–6 × 7–10 mm. Phyllaries in 2–3 series (often purple-tipped), glabrous, densely minutely glandular. Ray-florets 10–25; corollas blue, 4–8 mm, laminae not coiling or reflexing. Disc corollas 2.5–4.2 mm. Cypselae 1.5–2.2 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 10–16 bristles.


Phenology: Flowering Jun–Aug.
Habitat: Crevices in limestone and quartzite outcrops and cliffs, rarely in beach sand, oak-maple, mountain brush-white fir
Elevation: (1300–)1600–2900(–3600) m

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Erigeron arenarioides"
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 ex A. Gray) A. Gray ex Rydberg +
6 cm60 mm <br />0.06 m <br /> (8 cm80 mm <br />0.08 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (6 cm60 mm <br />0.06 m <br />) +
linear-oblanceolate +  and linear or filiform +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
decurrent +
Aster arenarioides +
linear;lanceolate oblanceolate or spatulate +
rugulose +  and muricate +
Wasatch fleabane +
not 2-lipped +  and actinomorphic +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
subterete +, oblong +  and oblong-obovoid compressed +
fertile +  and bisexual +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.42 cm4.2 mm <br />0.0042 m <br />) +
fertile +  and bisexual +
(1300–)1600–2900(–3600) m +
strigose +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Crevices in limestone and quartzite outcrops and cliffs, rarely in beach sand, oak-maple, mountain brush-white 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 />) +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
turbinate;hemispheric +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
not coiling +
petiolate +  and sessile +
cauline +  and basal +
erect;spreading +
deltate +
Not (?) +  and Scarious (?) +
2-carpellate +
Flowering Jun–Aug. +
3-nerved +  and 1-nerved +
narrowly elliptic +  and linear-lanceolate +
Fl. Rocky Mts., +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
Illustrated +  and Endemic +
eglandular +  and wiry +
prostrate +  and decumbent +
ascending +  and erect +
appendaged +  and truncate +
papillate +  and smooth +
Achaetogeron +  and Trimorpha +
Erigeron arenarioides +
Erigeron +
species +
inflated +  and tubular +
25 cm250 mm <br />0.25 m <br /> (30 cm300 mm <br />0.3 m <br />) +
6 cm60 mm <br />0.06 m <br /> (25 cm250 mm <br />0.25 m <br />) +
tree +, shrub +  and subshrub +