Flora of North America species comparison

trailing to ascending, branched, 4-angled, 10–60 cm, glabrous.

subsessile;

blade broadly elliptic to ovate, 0.4–2.6 cm × 2–15 mm, base round to cuneate, margins entire, apex acuminate, glabrous or with a few scattered cilia.

with flowers solitary in leaf axils;

bracts absent.

ascending, straight, mostly 5–30 mm, glabrous.

4–5 mm;

sepals 5, prominently 3-veined, lanceolate, 2–4 mm, margins broadly scarious, apex acute to acuminate, glabrous;

petals usually absent, rarely 1–5 and much shorter than sepals;

stamens 10 or fewer;

styles 3, spreading to ascending, curved but not curled, ca. 1 mm.

straw colored or brownish, ovoid to ovoid-ellipsoid, 3.5–6 mm, equaling or slightly exceeding sepals, apex broadly acute, opening by 6 valves;

carpophore absent.

brown, broadly elliptic, 0.7–1 mm (longest axis), distinctly rugose.

= 26, 52.