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 1.5–4 cm;

blade simple, ovate to elliptic, 5–25 × 3–15 cm, margins entire to shallowly lobed with 2–4 lobes per side, lobe margins entire to undulate, base obtuse to cordate.

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

extra-axillary, usually much-branched, 10–20-flowered, to 10 cm.

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

0.5–1 cm in flower, erect and 1–2 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 not accrescent, unarmed, 5–8 mm, densely stellate-pubescent, lobes triangular;

corolla usually blue to purple, rarely whitish, stellate to rotate-stellate, 2.5–4 cm diam., with abundant interpetalar tissue;

stamens equal;

anthers narrow and tapered, 6–8 mm, dehiscent by terminal pores;

ovary glabrous to stellate-pubescent.

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

yellow to orange, globose, 0.7–1.5 cm diam., stellate-pubescent at apex, without sclerotic granules.

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

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