Flora of North America species comparison

petiolate;

petiole 1–5 cm;

blade simple, ovate to elliptic, 7–23 × 4–14 cm, margins subentire to coarsely lobed with 3–4 lobes per side, lobe margins entire to coarsely lobed, base truncate to subcordate and asymmetrical.

petiolate;

petiole 2.5–6.5 cm;

blade simple to compound, broadly ovate, 5–13 × 2.5–9 cm, margins 2–3-times lobed or divided with 4–5 main leaflets per side, leaflets with deep, acute lobes, base truncate.

extra-axillary, unbranched or branched, 10–20-flowered, to 6 cm.

extra-axillary, unbranched, 6–10-flowered, 3–8 cm.

1–1.5 cm in flower, erect and 1.5–2.5 cm in fruit.

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

radially symmetric;

calyx slightly accrescent, unarmed, 4–8 mm, sparsely to moderately pubescent with unbranched, gland-tipped hairs, lobes lanceolate;

corolla white, stellate, 2–3 cm diam., with sparse interpetalar tissue;

stamens equal;

anthers narrow and tapered, 6–9 mm, dehiscent by terminal pores;

ovary glabrous or glandular-puberulent at apex.

bilaterally symmetric;

calyx accrescent and tightly covering fruit, densely prickly, 3.5–4.5 mm, sparsely to moderately glandular-pubescent, lobes linear-lanceolate;

corolla yellow, stellate, 1.3–1.8 cm diam., with ovate or narrowly deltate lobes, with sparse interpetalar tissue;

stamens unequal, lowermost longer and curved, adjacent pair somewhat shorter, uppermost pair shortest;

anthers narrow and tapered, dehiscent by terminal pores, shortest anthers 4.5–6 mm, medium-sized anthers 5.6–7.5 mm, longest anther 6.5–8.6 mm;

ovary glabrous.

green to yellow, globose, 1–1.5 cm diam., glabrous, without sclerotic granules.

brown, globose, 1–1.4 cm diam., glabrous, dry, without sclerotic granules.

light brown, flattened, 2.5–3 × 2–2.5 mm, minutely pitted.

dark brown, plump, 3–3.5 × 2.5–3 mm, radially ridged with hilum sunken in a deep notch.

= 24.

= 24.