Perennial herb from a stout rhizome, smooth; stems erect to ascending, 25-80 cm tall, sometimes branched above.
Basal leaves several, 15-40 cm long, pinnately compound, with stipules fused to base of long leaf-stalks and forming membranous margins; leaflets 9 to 15, egg-shaped to oblong, 2-5 cm long, coarsely saw-toothed; stem leaves alternate, 1 or 2, reduced, with free leaflet-like stipules.
Inflorescence a dense, cylindric, long-stalked spike of numerous small flowers, the spike 1.5-7 cm long; corollas absent; calyces reddish-purple to pink, 4-lobed, the lobes oval, 2-3 mm long; ovaries superior; stamens 4, the filaments flattened, club-shaped, about twice as long as the calyx-lobes.
Achenes, enclosed in the 4-angled, distinctly winged, smooth hypanthium.
Possibly a hybrid between S. canadensis and S. officinalis.
If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.
Illustration Source: The Illustrated Flora of British Columbia
||Value / Class
Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
of field plots
species was recorded in:
BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in
|CDF(2), CWH(3), MH(2)|
Source: Klinkenberg 2013