Flora of North America species comparison

petiolate;

petiole 1–8 cm;

blade simple, elliptic to ovate, 11–31 × 4–14 cm, margins entire, base acute, often with smaller axillary leaves.

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.

terminal, becoming leaf-opposed, much-branched, 50–100-flowered, 5–24 cm.

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

erect and 0.2–0.5 cm in flower and fruit.

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

radially symmetric;

calyx slightly accrescent, unarmed, 4–7.5 mm, densely pubescent, lobes deltate;

corolla purple, stellate-pentagonal, 1–1.5 cm diam., with abundant interpetalar tissue;

stamens equal;

anthers oblong, 2–3.5 mm, dehiscent by terminal pores that open into longitudinal slits;

ovary tomentose.

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.

yellow, globose, 1–1.5 cm diam., tomentose, without sclerotic granules.

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

yellowish brown, flattened, 1.5–2.5 × 1.5–2 mm, minutely pitted.

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

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

= 24.

= 24.