Flora of North America species comparison

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

prickles absent.

annual, erect, 0.2–0.6 m, herbaceous, glabrous, glaucous abaxially;

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.

few, approximate distally;

tendrils absent;

blade ovate, 6–15 × 1.5–8 cm; glabrous and glaucous abaxially, base cordate, margins entire, apex acute to acuminate.

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

peduncle equaling or shorter than subtending leaf.

1–few, proximalmost axillary to leaves or bracts, few-flowered, open;

peduncle 5–10 cm.

perianth greenish;

tepals 3.5–5 mm;

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

pedicel 0.5–2.2 cm.

perianth greenish;

tepals 2.5–3.5 mm;

anthers longer than filaments;

ovules (1–)2 per locule;

pedicel slender, ca. 1 cm.

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

black to bluish black, globose, ca. 8 mm diam., not glaucous.

= 26.

= 26.