USDA, ITIS, and E-Flora BC lists two varieties: (See E-Flora BC for excellent drawings for both varieties)
var. macrophyllum: found western NA and NE Canada. Note rounded, sharp toothed leaves that are not deeply cleft.
var. perincisum: found throughout western and northern NA. Note distinctive deeply cleft, sharp toothed leaves.
Note hairy stems, five widely spaced yellow rounded petals, many stamens with a green center.
east Central Cascades
TRAIL: Thorp Mtn.
HABITAT: Montane Forest
ELEVATION: 1,075 m (3,530 ft)
BLOOM TIME: 24-MAY
