Rhizomatous perennial. Stems erect, simple, not tufted, 20–80 cm. Herbage glabrate below, sparsely glandular-pubescent above. Leaves long-petiolate, 5–20 cm long; blades with 11 to 27 lanceolate, entire leaflets, 1–5 cm long. Inflorescence a terminal, leafy-bracted cyme. Flowers: calyx 5–8 mm long; corolla campanulate, tube 4–7 mm long with a ring of hairs at the level of filament insertion, lobes 5–9 mm long; stamens ca. as long as corolla; style exserted. Capsule 3–5 mm enclosed in the calyx (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Wet meadows, thickets, open forest, often along streams; valleys to subalpine (
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 vagans,
Bombus bifarius,
Bombus flavifrons,
Bombus sylvicola,
Bombus griseocollis,
Bombus impatiens, and
Bombus kirbiellus (Macior 1968, Macior 1974, Wilson et al. 2010, Colla and Dumesh 2010, Miller-Struttmann and Galen 2014).