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 0.4–4 cm;

blade simple, ovate, lanceolate, or elliptic, 2–15 × 2–10 cm, margins subentire, sinuate, or lobed with 1–4 lobes per side, sometimes very deeply lobed almost to midrib, lobe margins entire to coarsely lobed, base cuneate.

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

extra-axillary, unbranched or rarely forked, 2–12-flowered, 2–9 cm.

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

0.5–1 cm in flower, 1.2–1.8 cm and curved downward 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 somewhat accrescent, unarmed or with sparse prickles, 5–8 mm, moderately stellate-pubescent, lobes lanceolate to elliptic-acuminate;

corolla white to pale blue or violet, stellate to stellate-pentagonal or rotate-stellate, 2–3 cm diam., with interpetalar tissue at margins and bases of lobes;

stamens equal;

anthers narrow and tapered, 4.5–6.5 mm, dehiscent by terminal pores;

ovary glabrous or sparsely to moderately glandular-puberulent, rarely moderately pubescent, hairs white, stellate or simple.

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

light green with darker green mottling or pale greenish white, turning bright yellow, subglobose to depressed-globose, 1–2 × 1–1.8 cm, glabrous, without sclerotic granules.

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

yellow, flattened, 1.7–2.4 × 1.6–1.8 mm, minutely pitted.

= 24.