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 1–1.5 cm;

blade simple, elliptic, 10–30 × 1.5–15 cm, margins entire to coarsely pinnatifid with 1–3 lobes per side, lobe margins entire, base cuneate.

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

leaf-opposed or in branch forks, unbranched or forked, to 10-flowered, 5–15 cm.

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

1.5–3 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 somewhat accrescent, unarmed, 3–4 mm, glabrous, lobes deltate;

corolla blue to deep purple, rotate-stellate, 3–5 cm diam., lobes notched at apex, with abundant interpetalar tissue;

stamens equal;

anthers oblong, slightly tapered, 3–4 mm, dehiscent by terminal pores that sometimes open into longitudinal slits;

ovary glabrous.

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

yellow to orange-yellow, ovoid to obovoid, 1.5–2 × 1–1.5 cm, glabrous, with abundant sclerotic granules.

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

reddish brown, flattened, 2.5–3 × 2–2.5 mm, concentrically reticulate.

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

= 24.

= 92.