Flora of North America species comparison

simple, 20–50 cm.

in basal rosette and cauline, basal mostly 3-lobed, cauline (2–3), 3-foliolate, reduced, similar to basal (except lobes longer);

stipules large, decurrent on petiole base, (margins fimbriate);

petiole to 6 cm;

blade dark green, orbiculate, (base cuneate), surfaces nearly glabrous or sparsely to densely hairy.

2–3, nodding, 4–14-flowered racemes, simple.

equaling or shorter than hypanthium.

deciduous if unfertilized, not fragrant, horizontal;

hypanthium obconic-elongate at anthesis, becoming very elongate in fruit, open at throat, (length 2 times diam.);

sepals erect, triangular;

petals (exserted), widely spreading, white or pink, often with prominent venation, obovate-rhombic, narrowly clawed, deeply 3-lobed, (usually with prominent sinuses extending 1/2+ to base), 7–16 mm, ultimate margins entire;

ovary 1/2+ inferior;

styles included in fruit;

stigma papillae in narrow subapical band.

0.5–0.6 mm, wrinkled or smooth.

= 14, 21, 28, 35.