Flora of North America species comparison

petiolate;

petiole 1–3 cm;

blade simple, ovate to elliptic, 4.5–13 × 2–5.5 cm, margins entire, base rounded to acute.

petiolate;

petiole 2–10 cm;

blade simple to twice-compound, ovate to elliptic, (2–)4–16 × 3–12 cm, margins lobed to 1–2 times divided with 2–4 main leaflets per side, leaflets with deep, rounded lobes, base truncate to subcordate.

terminal to extra-axillary, much-branched, with numerous flowers, 2–8 cm.

extra-axillary, unbranched, 5–12-flowered, 4–11 cm.

erect and 0.7–1 cm in flower and fruit.

0.5–1.5 cm in flower, erect and 0.5–1.5 cm in fruit.

radially symmetric;

calyx not accrescent, unarmed, 2–4 mm, moderately stellate-pubescent, lobes triangular;

corolla white, stellate, 1.5–2 cm diam., without interpetalar tissue;

stamens equal;

anthers narrow and tapered, 3–4.5 mm, dehiscent by terminal pores;

ovary glabrous or sparsely glandular-pubescent.

bilaterally symmetric;

calyx accrescent and tightly covering fruit, densely prickly or bristly, 7.5–12.5 mm, densely stellate-pubescent, lobes linear to lanceolate;

corolla yellow, rotate-pentagonal, 1.5–3.5 cm diam., with abundant interpetalar tissue;

stamens unequal, lowermost much longer and curved;

anthers narrow and tapered, dehiscent by terminal pores, short anthers 4, yellow, 6–8 mm, longer anther reddish or purplish, 10–14 mm;

ovary glabrous.

red, globose, 0.5–1 cm diam., glabrous or sparsely glandular-pubescent, without sclerotic granules.

brown, globose, 1–1.2 cm diam., glabrous, dry, without sclerotic granules.

yellow, flattened, 2.5–3.5 × 1.5–2.5 mm, minutely pitted.

dark brown, flattened, 2–3 × 1.8–2 mm, minutely pitted and irregularly ridged.

= 24.

= 24.