Flora of North America species comparison

petiolate;

petioles twining around supports, 1–4 cm;

blade simple to compound, elliptic to broadly ovate, (2–)3.5–10(–13) × (1–)2–9(–11) cm, margins entire to divided with up to 4 pairs of leaflets, leaflet margins entire, base truncate or slightly cordate.

petiolate;

petiole 1.5–4 cm, with pair of entire lunate pseudostipules at base;

blade compound, elliptic to ovate, 7.5–20 × 3.5–8 cm, margins divided with 1–4 pairs of leaflets, these sometimes interspersed with smaller, interjected leaflets, lowermost leaflets sometimes greatly reduced in size, leaflet margins entire, base cuneate to cordate.

terminal, becoming lateral, extra-axillary, much-branched, to 100+-flowered, to 25+ cm.

terminal, extra-axillary or leaf-opposed, generally forked or 3-fid, 3–26-flowered, to 10 cm.

inserted into small sleeve on inflorescence axis, 0.8–1.4 cm in flower and fruit.

articulated near middle, 1.1–3.7 cm in flower and fruit.

radially symmetric;

calyx not accrescent, unarmed, ca. 0.5 mm, nearly truncate, glabrous or sparsely pubescent on lobe tips;

corolla purple, stellate, 1–2.5 cm diam., with sparse interpetalar tissue;

stamens unequal due to unequal filaments;

anthers ellipsoidal, 2–3 mm, dehiscent by terminal pores;

ovary glabrous.

radially symmetric;

calyx not accrescent, unarmed, 4–8 mm, lobes deltate-acuminate;

corolla purple, blue, pale pink, or rarely white, pentagonal to rotate, 1.8–3.3 cm diam., with abundant interpetalar tissue;

stamens equal;

anthers oblong, slightly tapered, 3.5–6.5 mm, dehiscent by terminal pores that open into longitudinal slits;

ovary glabrous.

bright shiny red, globose, 0.8–1.5 cm diam., glabrous, without sclerotic granules.

green, sometimes with dark green stripes or white spots, globose or slightly ovoid, 0.9–1.7 cm diam., glabrous, without sclerotic granules.

pale yellowish tan, flattened, 4–4.5 × 2.5-3 mm, minutely pitted.

greenish white, rounded, 1–2 mm diam., rugose.

or scrambling vines, woody, unarmed, to ca. 3 m, glabrous or sparsely pubescent, hairs white, unbranched, ca. 0.2 mm.

= 24.

= 48.