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;

petioles 0.5–1.5 cm;

blade simple, ovate to elliptic, (1–)2–6.5 × (0.5–)1–3(–4.5) cm, margins entire or undulate, base rounded to truncate and usually oblique.

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

extra-axillary, unbranched, 3–4-flowered, 3–4 cm.

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

0.4–1.5 cm in flower, erect and 1–2 cm in 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, 8–10(–20) mm, densely stellate-pubescent, lobes long-triangular to linear-lanceolate;

corolla violet, pentagonal, 2.5–4(–5) cm diam., with abundant interpetalar tissue;

stamens equal or slightly unequal;

anthers narrow and tapered, 6–10 mm, dehiscent by terminal pores;

ovary glabrous.

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

light green, sometimes with darker mottling, drying dark brown or reddish brown, globose, 1–1.5(–2) cm diam., glabrous, cracking open to expose seeds, without sclerotic granules.

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

dark brown, flattened, 2–3 mm diam., minutely pitted.

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

= 24.