Flora of North America species comparison

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

prickles absent.

annual, erect, unbranched, 0.5–1 m, herbaceous;

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.

numerous, evenly distributed, larger distally;

petiole thin, equaling or longer than blade;

tendrils distal, few, short;

blade narrowly ovate, pubescent and not glaucous abaxially, base rounded to truncate, margins convex, apex acute to acuminate.

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

peduncle equaling or shorter than subtending leaf.

3–10, axillary to leaves and bracts, 10–50-flowered, semiglobose;

proximalmost peduncle longer than distalmost.

perianth greenish;

tepals 3.5–5 mm;

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

pedicel 0.5–2.2 cm.

tepals 3.5–4.5 mm;

anthers usually shorter than filaments;

ovules (1–)2 per locule.

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

blue to black, globose.

= 26.

= 26.