Flora of North America species comparison

perennial, prostrate to clambering, branching, slender, to 1 m, ± woody, densely woolly-pubescent, usually prickly (especially at base).

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

prickles absent.

mostly evergreen, ± evenly disposed;

petiole 0.05–0.25 cm, often longer on sterile shoots;

blade gray-green, drying to ashy gray-green, obovate to ovate-lanceolate, with 3 prominent veins, 6–10.5 × 5–8 cm, glabrous adaxially, densely puberulent abaxially, base cordate to deeply notched, margins entire, apex bluntly pointed.

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.

1–7, axillary to leaves, 5–16-flowered, loose, spherical;

peduncle 0.2–0.8 cm, shorter than to 1.5 as long as petiole of subtending leaf.

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

peduncle 5–10 cm.

perianth yellowish;

tepals 3–4 mm;

anthers much shorter than filaments;

ovule 1 per locule;

pedicel thin, 0.1–0.4 cm.

perianth greenish;

tepals 2.5–3.5 mm;

anthers longer than filaments;

ovules (1–)2 per locule;

pedicel slender, ca. 1 cm.

red, ovoid, 5–8 mm, with acute beaks, not glaucous.

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

= 26.