Stems erect, spineless, 0.5–1 m. Twigs tomentose and sparsely glandular, tan, becoming gray. Leaf blades 3–12 cm wide, cordate, 3- to 5-lobed, crenate, pubescent and glandular above, more so beneath. Inflorescence spreading, 4- to 12-flowered. Flowers campanulate, 10–15 mm long, greenish-white, tinged with pink, glandular-hairy; calyx lobes lance-elliptic, 3–5 mm long; petals 3–4 mm long, white; stamens as long as petals; styles united to the tip, glabrous. Berry black, 8–15 mm long, glandular-hairy, unpalatable (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Our plants in Montana are variety
viscosissimum.
Moist to wet forests, avalanche slopes, often near streams; montane, lower 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 centralis,
Bombus fervidus,
Bombus flavifrons,
Bombus huntii,
Bombus melanopygus,
Bombus mixtus,
Bombus nevadensis,
Bombus terricola,
Bombus sitkensis,
Bombus occidentalis,
Bombus pensylvanicus,
Bombus bimaculatus,
Bombus impatiens,
Bombus insularis, and
Bombus flavidus (Plath 1934, Thorp et al. 1983, Colla and Dumesh 2010, Koch et al. 2012, Williams et al. 2014).