Flora of North America species comparison

petiolate;

petiole 1–2.5(–4) cm;

blade simple, elliptic to obovate, 3–11(–14) × 1.6–5.5(–9) cm, margins entire or slightly undulate, occasionally with 2 small lobes at base, lobe margins entire, base truncate or acute.

petiolate;

petiole 1.5–6 cm;

blade simple, ovate, 8–23 × 7–13 cm, margins coarsely lobed with 3–4 lobes per side, lobe margins entire to coarsely lobed, base cordate.

terminal or lateral, leaf-opposed or extra-axillary, usually once-branched, occasionally more, 20–30-flowered, (2–)4–10 cm.

extra-axillary or leaf-opposed, occasionally sessile, unbranched or forked, 6–15(–30)-flowered, 3.5–8 cm.

inserted into small sleeve on inflorescence axis, 1.5–2 cm in flower and fruit.

0.5–2 cm in flower, pendent and 2–3 cm in fruit.

radially symmetric;

calyx not accrescent, unarmed, 6–7 mm, densely pubescent, lobes deltate;

corolla violet to purple with or without green spots at base of lobes, spots usually small and not confluent, rotate, 3–4.5 cm diam., with abundant interpetalar tissue;

stamens equal;

anthers ellipsoidal, 4.5–5 mm, dehiscent by terminal pores that open into longitudinal slits;

ovary glabrous.

radially symmetric;

calyx accrescent and subtending fruit, sparsely to moderately armed, 7–15 mm, densely stellate-pubescent, lobes broadly deltate;

corolla white to pale purple, rotate-stellate, 2.5–4 cm diam., with abundant interpetalar tissue;

stamens equal;

anthers narrow and tapered, 5.5–7 mm, dehiscent by terminal pores;

ovary moderately stellate-pubescent.

shiny green, turning yellow then black, globose, 3–4 cm diam., glabrous, without sclerotic granules.

yellow, dark green mottled with white when young, globose, 3.5–4(–5) cm diam., glabrous, without sclerotic granules.

reddish brown, plump to flattened, 1.5–2 × 1–1.5 mm, minutely pitted.

light brown, flattened, 2.5–3.5 × 2–2.5 mm, minutely pitted.

= 24.