UW Burke Herbarium species comparison

Leaves alternate, mainly cauline;

stipules well-developed, ovate, usually strongly toothed;

leaflets usually 3, broadly ovate to obovate below to narrowly oblong above, 3-6 cm. long, serrate with rounded teeth, pubescent.

Basal leaves numerous, with petioles to 3 dm. long, palmately divided; the leaflets 7-9, broadly oblanceolate to oblong-elliptic, varying from glabrous and green on both surfaces to hairy above and white-woolly below, toothed to deeply dissected;

cauline leaves 1-2, reduced;

stipules up to 2.5 cm. long, entire to lacerate.

Inflorescence a rather compact cyme with a long peduncle;

calyx 7-11 mm. broad, the 5 sepals broadly lanceolate, erect, the 5 bracteoles lanceolate and about equal in length to the sepals;

petals yellow, broadly obovate, slightly shorter than the sepals;

stamens usually 20;

pistils numerous;

style terminal, thickened basally.

Inflorescence large, many-flowered, open, somewhat flat-topped;

calyx 6-10 mm. broad, the 5 lobes 4-10 mm. long, ovate-lanceolate, the alternating bracteoles narrowly lanceolate, nearly as long;

petals 5, yellow, obcordate, longer than the sepals;

stamens 20;

pistils numerous, the style slender, sub-terminal on the achene and the same length.

Achenes light brown, 1.0-1.3 mm. long ovate, flattened.

Achene 1.5-2 mm. long, smooth, greenish.