Flora of North America species comparison

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

erect or trailing, branched, square, weak, to 25(–35) cm, glabrous or pilose, never papillate.

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.

sessile or subsessile;

blade ovate to elliptic, rarely oblong, widest proximal to middle, 5–25 mm, thin, base round, margins entire, apex acute, glabrous or rarely ciliate.

with flowers solitary in leaf axils;

bracts absent.

terminal, 1–5-flowered cymes;

bracts foliaceous.

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

ascending, not reflexed, 5–25(–50) 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.

3–5 mm;

sepals 5, obscurely veined, ovate, 2–2.5 mm (rarely 3.5 in fruit), margins broad, scarious, apex broadly acute, glabrous;

petals absent or 1–5, 1–1.5 mm, shorter than sepals, blade apex deeply lobed;

stamens 5;

styles 3, usually curved, 0.4–0.9 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.

green, semitransparent, globose to broadly ovoid, 3–5 mm, to 1.5 times as long as broad, longer than sepals, apex obtuse, opening by 3 valves;

carpophore absent.

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

brown, ovate, 0.5–0.9 mm, smooth or shallowly tuberculate.

= 26, 52.

= 26.