Flora of North America species comparison

6–55 cm.

3–55 cm.

blade lateral lobes usually well developed, terminal lobe narrowly ovate, to 6 × 3.5 cm, margins irregularly sinuate-dentate.

blade lateral lobes well developed, few to numerous, terminal lobe narrowly ovate to subcordate, to 8 × to 4 cm, margins serrate-dentate.

opening at sunset;

buds with apical free tips less than 1 mm;

floral tube orange-brown inside, 3–5.5 mm;

petals usually white, very rarely pale yellow, sometimes purple-dotted near base, often fading purple, 3.5–8 mm.

opening at sunrise;

buds without free tips, sometimes with apical free tips less than 1 mm;

floral tube yellow or orange-brown inside, 2–6.5 mm;

petals bright yellow, sometimes red-dotted in proximal 1/2, often fading purple, 2.5–8 mm.

= 14.

= 14.