Erigeron humilis

Graham
Edinburgh New Philos. J. 6: 175. 1828.
Common names: Arctic Alpine fleabane petite vergerette
Synonyms: Er igeron unalaschkensis (de Candolle) Vierhapper E. uniflorus var. unalaschkensis (de Candolle) Ostenfeld
Treatment appears in FNA Volume 20. Treatment on page 326. Mentioned on page 266.

Perennials 2–15(–25) cm; rhizomatous, fibrous-rooted, rhizomes or caudices simple or branched. Stems erect, villoso-hirsute (hair cross walls dark to blackish purple), minutely glandular (conspicuously so proximal to heads). Leaves mostly basal (persistent) and cauline; blades spatulate to spatulate-oblanceolate, 10–50(–80) × 2–7(–11) mm, cauline abruptly reduced distally, margins entire, faces sparsely to moderately villous (hair cross walls dark reddish or purple), sometimes sparsely minutely glandular. Heads 1. Involucres 6–9 × 10–15(–20) mm. Phyllaries in (1–)2(–3) series (usually dark purple), strigoso-hirsute (hair cross walls dark reddish to blackish purple), minutely glandular. Ray florets 50–100(–150); corollas bluish purple to lavender, rarely whitish, 4–6 mm, laminae erect (filiform, 0.3–1 mm wide), not coiling or reflexing. Disc corollas 2.4–3 mm. Cypselae 2.2–2.5 mm, plump, 2-nerved, faces finely strigoso-hirsute; pappi: outer of setae (inconspicuous), inner of 20–30 bristles. 2n = 36.


Phenology: Flowering Jun–Aug(–Sep).
Habitat: Arctic and alpine tundra, snowbed slopes, pond and stream margins, boulder ridges in streambeds, heaths, ledges, dry gravelly slopes
Elevation: (Greenland, 0–)1000–2400(–4000, Colorado, Utah) m

Distribution

V20-737-distribution-map.gif

Greenland, Alta., B.C., Man., Nfld. and Labr. (Labr.), N.W.T., Nunavut, Ont., Que., Yukon, Alaska, Colo., Idaho, Mont., Utah, Wyo., n Eurasia.

Discussion

Selected References

None.

Lower Taxa

None.

... more about "Erigeron humilis"
Guy L. Nesom +
Graham +
Arctic Alpine fleabane +  and petite vergerette +
Greenland +, Alta. +, B.C. +, Man. +, Nfld. and Labr. (Labr.) +, N.W.T. +, Nunavut +, Ont. +, Que. +, Yukon +, Alaska +, Colo. +, Idaho +, Mont. +, Utah +, Wyo. +  and n Eurasia. +
(Greenland, 0–)1000–2400(–4000, Colorado, Utah) m +
Arctic and alpine tundra, snowbed slopes, pond and stream margins, boulder ridges in streambeds, heaths, ledges, dry gravelly slopes +
Flowering Jun–Aug(–Sep). +
Edinburgh New Philos. J. +
Er igeron +  and E. uniflorus var. unalaschkensis +
Erigeron humilis +
Erigeron +
species +