Arctic Aster - Eurybia sibirica
MNPS Threat Rank
Stems ascending, 3–20 cm. Herbage scabrous to strigose. Leaves cauline, stiff, short-petiolate; blades oblanceolate, serrate to entire, 1–5 cm long, sessile above, the lowest deciduous. Inflorescence corymbiform with 1 to few heads; peduncles densely villous. Involucre campanulate, 6–9 mm high; phyllaries lanceolate, ciliate to puberulent; the inner purplish. Rays 12 to 50; ligules 7–12 mm long. Disk flowers 25 to 125; corolla 5–7 mm long. Achenes fusiform, 2–4 mm long, sparsely strigose (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
Sparsely vegetated, stony, usually calcareous soil of alpine fellfields, montane streambanks (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
The following animal species have been reported as pollinators of this species or genera where their geographic ranges overlap: Bombus vagans
, Bombus ternarius
, and Bombus terricola
(Colla and Dumesh 2010).