From H&C:
Sepals mostly white or pinkish, generally > 8mm. (generally more rounded than these)
35-60 stamens
Note 3 sets of stem leaves divided into 3 lobes
Grows in shady confier forest in e WA.
from eFloras.org
Plants of Anemone piperi from southeastern Washington and northeastern Oregon
(i.e., the westernmost limits of the species) are sometimes intermediate between
A . piperi and A . oregana . Although they possess vertical rhizomes characteristic of
A . piperi , they have the bluish or pinkish sepals of A . oregana . These plants are
best referred to A . piperi , pending detailed biosystematic analysis.
east-side forest
Elevation: 1414m (4,637 ft)
Mt. Spokane Ski Area