Flora of North America species comparison

5-30 cm, from rhizomes, rhizomes horizontal.

1, simple;

petiole (0.8-)2-8(-12) cm;

leaf blade reniform to ±orbiculate, (1-)1.5-3(-4) × 1.5-4 cm, base somewhat cordate, margins crenate to serrate ±throughout, apex acute to broadly acute, surfaces glabrous or ±villous, or abaxially glabrescent;

segments primarily 3, rhombic;

lateral segments unlobed or 1x-lobed; ultimate lobes 4-10(-15) mm wide.

1-flowered;

peduncle puberulous;

involucral bracts 2-3, 1-tiered, simple, ±similar to basal leaves, primarily rhombic, 1-3.5 cm, bases distinct, cuneate, margins crenate on distal 1/2, apex acute to narrowly acute, surfaces glabrous or ±villous, or abaxially glabrescent;

segments 3, primarily rhombic;

lateral segments unlobed, 2-10 mm wide.

sepals (4-)6(-8), yellow (rarely abaxially yellow, tinged blue, and adaxially yellow), elliptic, 8-15 × 4-10 mm, abaxially villous, especially proximally, adaxially glabrous;

stamens 25-55.

body ovoid to oblong, 3-4 × ca. 1.5 mm, not winged, glabrous;

beak recurved, 4-6 mm, glabrous.

loosely spheric;

pedicel 3-20 cm.

=14.