Flora of North America species comparison

annual, erect, 2–5 m, herbaceous, glabrous;

prickles absent.

annual, erect to leaning, with bladeless bracts proximally, leaves distally, 0.3–0.8 m, herbaceous;

prickles absent.

few, disposed distally or evenly distributed, subequal;

petiole shorter than blade;

tendrils absent or rudimentary;

blade oblong, oblong-ovate, or sometimes oval, 2.5–12 × 1.5–7.5 cm, not glaucous, puberulent abaxially, base rounded to slightly cordate, margins entire, apex broadly rounded to obtuse or abruptly pointed.

mostly distal (upper 1/2–2/3 of plant);

petiole thin, shorter than blade;

tendrils few and short or absent;

blade thin, broadly elliptic-ovate to subrotund, 9–12 × 5–9 cm, pubescent and not glaucous abaxially, base cordate to truncate, margins entire, convex, apex round to acuminate.

1–3, proximalmost axillary to bracts, 5–12-flowered.

1–3, proximalmost axillary to bracts below leaves, to 25-flowered, hemispherical to globose.

perianth greenish;

tepals 3–3.5 mm;

anthers shorter than filaments;

ovules (1–)2 per locule.

perianth green;

tepals 3.5–4 mm;

anthers ± equaling filaments;

ovules (1–)2 per locule;

pedicel 0.5–1.3 cm.

globose, 8–10 mm diam., glaucous.

purplish black, globose, 9–11 mm, not glaucous.

= 26.

= 52.