UW Burke Herbarium species comparison

Basal leaves numerous, long-petiolate, the blades ternate, the leaflets obovate, deeply toothed, the teeth rounded;

stipules membranous, ovate, 5-15 mm. long;

cauline leaves 1-2, reduced.

Leaves ternate, the leaflets somewhat leathery, woolly below, strongly veined, obovate, 1-2 cm. long, coarsely dentate, the teeth rounded;

cauline leaves 2, sub-sessile, only slightly reduced.

Inflorescence open, few-flowered, leafy-bracteate;

calyx saucer-shaped, 1-1.5 cm. broad, the 5 lobes deltoid-lanceolate, the alternating bracteoles slightly shorter, elliptic, toothed;

petals 5, bright yellow, obcordate, up to 10 mm. long;

stamens 20, inserted just outside a blackish-purple disk;

pistils numerous;

style slender, sub-terminal, longer than the achene.

Inflorescence open, 2-5 flowered;

calyx 7-11 mm. long, the 5 lobes triangular, 3.5-4.5 mm. long, equal to the alternating, oval-elliptic bracteoles;

petals 5, yellow, obcordate, exceeding the sepals;

stamens 20;

pistils numerous, style sub-terminal, basally thickened and tapered, equal to the achene;

Achene 1.5 mm. long, smooth.

Achene 1 mm. long, smooth.