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 1–8 cm;

blade simple, elliptic to ovate, 11–31 × 4–14 cm, margins entire, base acute, often with smaller axillary leaves.

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

terminal, becoming leaf-opposed, much-branched, 50–100-flowered, 5–24 cm.

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

erect and 0.2–0.5 cm in flower and 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.

radially symmetric;

calyx slightly accrescent, unarmed, 4–7.5 mm, densely pubescent, lobes deltate;

corolla purple, stellate-pentagonal, 1–1.5 cm diam., with abundant interpetalar tissue;

stamens equal;

anthers oblong, 2–3.5 mm, dehiscent by terminal pores that open into longitudinal slits;

ovary tomentose.

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

yellow, globose, 1–1.5 cm diam., tomentose, without sclerotic granules.

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

yellowish brown, flattened, 1.5–2.5 × 1.5–2 mm, minutely pitted.

= 24.

= 24.