Flora of North America species comparison

decumbent or ascending, diffusely branched, 4-sided, 5–40 cm, with single line of hairs along each internode.

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

petiolate (proximal) or ± sessile (distal);

blade usually green, ovate to broadly elliptic, 0.5–4 cm × 2–20 mm, base round to cuneate, margins entire, apex acute or shortly acuminate, ± glabrous or ciliate at base.

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.

terminal, 5–many-flowered cymes;

bracts ovate and shortly acuminate to lanceolate-acute, 1–40 mm, herbaceous.

with flowers solitary in leaf axils;

bracts absent.

ascending, usually straight, deflexed at base in fruit, 3–40 mm, usually with line of hairs.

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

2–5 mm diam.;

sepals 5, with obscure midrib, ovate-lanceolate, 4.5–5(–6) mm, margins narrow, scarious, apex obtuse, usually glandular-hairy;

petals absent or 5, 1–4 mm, shorter than to equaling sepals;

stamens 3–5(–8);

anthers red-violet;

styles 3, outwardly curved, becoming curled, 0.5–1 mm.

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.

green to straw colored, ovoid-oblong, 3–5 mm, somewhat longer than sepals, apex obtuse, opening by 6 valves;

carpophore absent.

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.

reddish brown, broadly reniform to round, 0.9–1.3 mm diam., with obtuse, round, or flat-topped (broader than tall) tubercles.

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

= 40, 42, 44.

= 26, 52.