General: Perennial herb from a stout rhizome or branched stem-base with fibrous roots; stems ascending to erect, solitary, simple, smooth except hairy at the nodes, 15-70 cm tall.
Leaves: Basal leaves spoon-shaped or pinnately cleft with 1-2 pairs of lateral segments up to 3 cm long and 1.5 cm wide, enlarged terminal segment up to 8 cm long and 4 cm wide, leaves stalked; stem leaves few, smaller, opposite, entire or slightly toothed, 2-4 pairs, short-stalked.
Flowers: Inflorescence a compact, flat-topped cluster with usually male/female flowers; corollas white or pink, 5-9 mm long, lobed, the lobes 1/2 as long as the tube; calyces with 12-18 feathery segments; stamens well exserted.
Fruits: Achenes, lanceolate to more oblong or linear, 5-6 mm long, 1-2 mm wide, smooth.
Shade-tolerant/intolerant, submontane to alpine, Western North American forb distributed equally in the Pacific and Cordilleran regions. Occurs on fresh to very moist, nitrogen-rich soils within boreal, cool temperate, and cool mesothermal climates. Sporadic in meadow-like communities and coniferous forests on water-receiving and watercollecting sites. Usually associated with Athyrium filixfemina, Gymnocarpium dryopteris, Lonicera utahensis, Optopanax horridus, and Streptopus roseus. A nitrophytic species characteristic of Moder and Mull humus forms.
Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2020. E-Flora BC:
Electronic Atlas of the Plants of British Columbia [eflora.bc.ca]. Lab for
Advanced Spatial Analysis, Department of Geography, University of British
Columbia, Vancouver. [Accessed:
2022-06-26 2:13:10 AM
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