Flora of North America species comparison

ascending or prostrate, branched.

erect or ascending, usually unbranched, sometimes 1–2 branched.

usually green, sometimes reddish green;

stipules triangular, 0.5–0.6 mm, margins entire, apex acute;

petiole 1–3 mm;

blade obovate to broadly spatulate, 3–4(–8) × 0.5–2.5 mm, base cuneate to rounded, apex obtuse to slightly emarginate.

green;

stipules lanceolate, 0.2 mm, margins entire, apex rounded;

petiole 0–1 mm;

blade elliptic to oblanceolate or spatulate, 0.3–5(–11) × 0.7–1.8(–4) mm, base rounded to truncate, apex obtuse-acute.

absent.

0–0.2 mm, erect.

sepals 2–3, if 2, equal, if 3, 1 smaller, oblong, 0.5 × 0.3 mm;

petals 3, pinkish white to reddish, elliptic to ovate, 1–1.5 × 0.5 mm;

stamens 3;

styles 3.

cleistogamous when submersed;

sepals 2, equal, ovate to oblong, 0.5 × 0.3 mm;

petals 2, reddish, long-elliptic, elliptic, or ovate, 1–1.5 × 0.5 mm;

stamens 2;

styles 2.

depressed-ovoid, 3-locular, 1.5–2 mm diam.

oblong-ovoid, 2-locular, 0.9–1.5 mm diam.

23–33 per locule, ellipsoid, straight or curved to 20°, 0.4–0.5 × 0.1–0.2 mm;

pits angular-hexagonal, length 3–5 times width, in 6 rows, 16–25(–35) per row.

4–9 per locule, thickly cylindric to barrel-shaped, straight, 0.4–0.5(–0.7) × 0.2(–0.3) mm;

pits elliptic, length 1.2–1.6 times width, in 8–9 rows, (11–)15–20 per row.