UW Burke Herbarium species comparison

Basal leaves several, the blades lyrate-pinnatifid, up to 3 dm. long;

leaflets 9-23, triangular-ovate to cordate, the terminal one much the largest, up to 15 cm. wide;

cauline leaves 2-5, with leaf-like stipules.

Basal leaves several, the blades lyrate-pinnatifid, up to 3 dm. long;

leaflets 9-23, triangular-ovate to cordate, the terminal one much the largest, up to 15 cm. wide;

cauline leaves 2-5, with leaf-like stipules.

Flowers several in an open, asymmetrical inflorescence;

calyx saucer-shaped, the 5 lobes 4-5 mm. long, reflexed, alternating with 5 simple bracteoles;

petals 5, yellow, 4-6 mm. long;

stamens and pistils numerous.

Flowers several in an open, asymmetrical inflorescence;

calyx saucer-shaped, the 5 lobes 4-5 mm. long, reflexed, alternating with 5 simple bracteoles;

petals 5, yellow, 4-6 mm. long;

stamens and pistils numerous.

Achenes compressed, elliptic, 3 mm. long, the style bent and divided at mid-length, the lower segment 4 mm. long, reddish, hooked at the tip, the upper segment 1-1.5 mm. long, yellowish.

Achenes compressed, elliptic, 3 mm. long, the style bent and divided at mid-length, the lower segment 4 mm. long, reddish, hooked at the tip, the upper segment 1-1.5 mm. long, yellowish.