UW Burke Herbarium species comparison

Basal leaves with petioles 1-5 times the length of the blades, the blades cordate-lanceolate to rhombic, 1.5-3.5 cm. long and nearly as broad, 3-lobed at the tip;

cauline leaves few, considerably reduced, alternate.

Flowers 1-several on the scapes, bracteate;

pedicels 2-6 cm. long;

sepals 5, greenish-yellow, 2-4 mm. long;

petals 5, pale yellow, 5-8 mm. long;

nectary scale glabrous, about 0.4 mm. long, forming a pocket, laterally attached full length;

receptacle cylindric, 3-10 mm. long;

stamens 15-30;

pistils 50-200.

Achenes glabrous, laterally compressed, 2- to 4-nerved on each face, 1.5 mm. long; stylar beak stout, straight, 0.5 mm. long.