Flora of North America species comparison

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

ascending or prostrate, branched.

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.

green;

stipules lanceolate, 0.5–0.6 mm, margins dentate, apex acute;

petiole 0.5–3 mm;

blade obovate to broadly spatulate, 3–8 × 0.5–3.5 mm, base attenuate or cuneate, apex rounded to shallowly emarginate.

0–0.2 mm, erect.

to 0.1 mm, erect.

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.

cleistogamous when submersed;

sepals (2–)3, equal or 1 reduced, oblong-ovate or widely lanceolate, 0.5 × 0.3–0.5 mm;

petals 3, greenish white or pinkish white to reddish, elliptic or ovate, 0.6–1.2 × 0.5 mm;

stamens 3;

styles 3.

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

oblong-ovoid, 3-locular, 1.5 mm diam.

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.

9–12 per locule, slenderly cylindric, ± straight, 0.4–0.6 × (0.1–)0.2 mm;

pits angular-hexagonal, length 2–3 times width, in 6(–8) rows, (13–)16–25(–30) per row.

= 36.