Flora of North America species comparison

stipules lanceolate;

petiole subequal to blade;

blade concolorous, broadly ovate to suborbiculate, 8–15 cm, ± as long as wide, base cordate, margins crenulate, apex acuminate, surfaces softly pubescent.

stipules filiform, 6–9 mm;

petiole variable, usually subequal to blade;

blade nearly concolorous, broadly ovate or weakly 3-lobed, 4–8 cm, ± as long as wide, base cordate, margins dentate, apex acuminate, surfaces softly tomentose.

usually solitary flowers, sometimes cymose or racemose.

solitary flowers or terminal panicles.

calyx 10 mm, lobes not overlapping, erect in fruit, ovate;

corolla pale yellow throughout, petals 8–13 mm;

staminal column glabrous;

style 13–15-branched.

calyx 9–15 mm, lobes accrescent to 20 mm, basally overlapping, not reflexed in fruit, cordate, to 8 mm wide;

corolla yellow-orange throughout, petals 20–25 mm;

staminal column glabrous;

style 10-branched.

3 per mericarp, 3–4 mm, minutely puberulent.

3 per mericarp, 3 mm, puberulent.

broadly ovoid, 15 × 20 mm;

mericarps: apex spinose, spines divergent, 3–6 mm, hirsute.

broadly ovoid, 10–12 × 15–16 mm;

mericarps: apex acute or apiculate, densely hirsute.

= 84.