Flora of North America species comparison

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

erect or straggling, branched, square, 10–35 cm, glabrous but angles minutely papillate-scabrid.

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;

blade green to yellowish green, never glaucous, linear to very narrowly elliptic, widest at or beyond middle, 0.8–4 cm × 1–3 mm, not coriaceous, base attenuate, apex acuminate to acute, glabrous to sparingly ciliate at base, margins minutely papillate-scabrid;

proximal leaves shorter and wider.

with flowers solitary in leaf axils;

bracts absent.

terminal, widely divaricate, 2–many-flowered cymes;

bracts lanceolate, 1–5 mm, scarious, apex acuminate.

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

straight or somewhat arcuate, commonly 3–30 mm, glabrous or scabrous.

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.

5–9 mm diam.;

sepals 5, obscurely 3-veined, ovate-elliptic, 2–4 mm, margins scarious, apex acute, glabrous;

petals 5, 2–3.5 mm, ± equaling sepals;

stamens 5–10;

styles 3, ascending, 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.

blackish purple or straw colored, ovoid-conic, 3–6 mm, much longer than sepals, opening by 6 valves;

carpophore absent.

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

brown, broadly reniform, 0.7–0.8 mm diam., slightly rugose.

= 26, 52.

= 26.