Montana Field Guide

Stems 50–150 cm, with paired, large, hooked, nodal prickles, otherwise sparsely prickly. Leaves with 5 to 7, elliptic leaflets, 2–5 cm long; the rachis glandular, often puberulent. Flowers usually solitary at tips of new twigs; hypanthium glabrous to minutely glandular, 5–9 mm wide; sepals 15–35 mm long, glabrous to pubescent, usually stipitate-glandular, persistent, dilated at the tip; petals 20–35 mm long. Hip globose, red to purple, 12–20 mm long (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Our plants are variety hispida Fernald.

Open forest, thickets, often along streams, ponds, lakes; montane (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 centralis, Bombus fervidus, Bombus huntii, Bombus mixtus, Bombus rufocinctus, Bombus ternarius, Bombus terricola, Bombus sitkensis, Bombus occidentalis, Bombus bimaculatus, Bombus griseocollis, and Bombus impatiens (Plath 1934, Thorp et al. 1983, Mayer et al. 2000, Wilson et al. 2010, Colla et al. 2011, Koch et al. 2012, Williams et al. 2014).