Perennial, often forming small cushions from a tightly-branched caudex. Flowering stems erect to ascending, tomentose, 2–35 cm, clothed in old leaves at the base. Leaves basal, long-petiolate; the blade 2–20 mm long, oblanceolate to orbicular, tomentose. Inflorescence capitate to rarely umbellate, bracts scale-like; involucres 1 to many per cluster, tomentose, 2–4 mm long with 5 erect lobes. Flowers 2–5 mm long, white, yellow, or rose, cup-shaped; tepals glabrous, the outer much broader than the inner; stamens not exserted. Achenes 2–3 mm long (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Plants in MT are varieties
ovalifolium, depressum Blank.,
ochroleucum(Small ex Rydb.) M.E. Peck,
pansum Reveal, or
purpureum (Nutt.) Dur.
POLLINATORS The following animal species have been reported as pollinators of this plant species or its genus where their geographic ranges overlap:
Bombus bifarius,
Bombus centralis,
Bombus flavifrons,
Bombus huntii,
Bombus melanopygus,
Bombus mixtus,
Bombus ternarius,
Bombus occidentalis,
Bombus insularis, and
Bombus flavidus (Thorp et al. 1983, Koch et al. 2012, Williams et al. 2014).