Flora of North America species comparison

5–40 cm.

3–55 cm.

blade lateral lobes poorly developed, small or absent, terminal lobe lanceolate, to 4 × 2 cm, margins irregularly 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 conspicuous, subapical free tips;

floral tube orange-brown inside, 3.5–5 mm;

petals yellow, fading brick red, 3–5 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.