Montana Field Guide

Perennial from a branched caudex clothed in old stipules, sometimes forming loose mats. Stems ascending to lax, with sparse, wrinkled, spreading hair 3–15 cm. Leaf blades sericeous, linear, 1–5 cm long, pinnately divided into 9 to 21 deeply lobed leaflets, the ultimate segments linear. Inflorescence few-flowered, appressed-hairy, open with spreading branches. Flowers sepals lanceolate, 3–5 mm long; bracteoles narrower and shorter; petals yellow, 4–6 mm long, longer than the sepals. Achenes smooth, ca. 1.5 mm long (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Sparsely vegetated, exposed ridges, fellfields; plains, valleys to alpine (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

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 fervidus, Bombus frigidus, Bombus rufocinctus, Bombus occidentalis, Bombus pensylvanicus, Bombus impatiens, and Bombus flavidus (Thorp et al. 1983, Wilson et al. 2010, Colla and Dumesh 2010, Colla et al. 2011, Koch and Strange 2012, Koch et al. 2012, Williams et al. 2014).