Flora of North America species comparison

annual, climbing, branching, to 2.5 m, herbaceous, glabrous;

prickles absent.

annual, climbing, branching, to 2.5 m, herbaceous, glabrous;

prickles absent.

evenly distributed;

petiole ± equaling blade;

tendrils numerous, long, functional;

blade lustrous, dark green abaxially, narrowly to broadly ovate, 8–16 × 3.5–9 cm, often with minute, whitish pubescence abaxially mostly on veins, with transparent trichomes, base cordate, margins entire, convex, apex long-acuminate;

leaves on branches with oblong, smaller blade.

petiole thin, 1–6 cm;

tendrils numerous, long, functional;

blade oblong-ovate, ovate, or round, 4.5–12 × 3–9 cm, glabrous abaxially, base cordate to truncate, margins entire, apex obtuse to acute;

proximal cauline leaves narrower and smaller.

numerous, axillary to leaves, 10–35-flowered, globose;

peduncle equaling or shorter than subtending leaf.

many, axillary to leaves, 20–100+-flowered, globose;

peduncle to 30 cm, progressively shorter distally.

perianth greenish;

tepals 3.5–5 mm;

anthers shorter than filaments, ovules (1–)2 per locule;

pedicel 0.5–2.2 cm.

perianth greenish, carrion-scented;

tepals 3.5–4.5 mm;

anthers much shorter than filaments;

ovules (1–)2 per locule;

pedicel 0.5–2 cm.

black, subglobose, 8–10 mm, not glaucous.

blue, subglobose, ca. 10 mm diam., glaucous.

.

= 26.

= 26.