Flora of North America species comparison

erect, branched, 4-sided, 10–40 cm, with alternating lines of spreading, soft, flexuous, mainly eglandular hairs.

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

usually sessile (distal), often short-petiolate (proximal);

blade elliptic, obovate, or lanceolate, widest at or beyond middle, 1–10 cm × 5–35 mm, base cuneate, margins entire, apex acute, glabrous to sparsely pubescent adaxially, ciliate on margins and abaxial midrib.

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, 3–70-flowered cymes;

bracts elliptic to lanceolate, 7–65 mm, herbaceous.

with flowers solitary in leaf axils;

bracts absent.

erect in flower, often deflexed at base in fruit, 5–40 mm, softly pubescent.

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

(8–)10–12 mm diam.;

sepals 5, with midrib, ovate, 3.5–6 mm, margins narrow, scarious, apex obtuse to acute, softly and often sparsely pubescent;

petals 5, 4–8 mm, longer than sepals;

stamens 10;

styles 3, ascending, 2.5 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, broadly ovoid, 3.5–5.5 mm, ca. equaling 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.

brown, obliquely reniform, 1.5–2 mm diam., coarsely sulcate-papillate.

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

= 30.

= 26, 52.