Flora of North America species comparison

erect when young, decumbent or prostrate later, moderately branched especially from base, not wiry, 50–70 cm.

mostly ascending or erect, branched from base, not wiry, 20–80 cm.

ocreae 5–12 mm, proximal part cylindric, distal part soon disintegrating into brown fibers;

petiole 0.3–1.5 mm;

blade light yellowish green, elliptic to obovate, 8–35 × 3–15 mm, margins flat, apex rounded;

stem leaves 1–2.1(–3) times longer than branch leaves;

distal leaves overtopping flowers.

ocrea 7–9 mm, proximal part cylindic, distal part disintegrating into straight fibers;

petiole 0.2–1 mm;

blade green or bluish green, linear to lanceolate, 25–40 × 4–8 mm, margins flat, apex acute;

stem leaves 2–4 times as long as branch leaves;

distal leaves abruptly reduced and not overtopping flowers (shorter than or equaling flowers).

axillary, cymes in axils of most leaves and toward tips of stems and branchs, 1–3(–5)-flowered.

axillary and terminal, spikelike;

cymes aggregated at tips of stems and branches, 1–3-flowered.

enclosed in ocreae, 1.3–1.8(–2) mm.

enclosed in ocreae, 1.5–2 mm.

closed;

perianth 2.6–4 mm;

tube 40–55% of perianth length;

tepals incurved, yellow-green with yellow to green, rarely pinkish, margins, sepaloid, ± keeled, narrowly oblong, cucullate;

midveins unbranched, moderately to heavily thickened, tepals appearing keeled;

stamens 5–8.

closed or semi-open;

perianth 2.2–3 mm;

tube 15–30% of perianth length;

tepals overlapping, green with white to pink margins, petaloid, not keeled, oblong, cucullate;

veins branched;

stamens 8.

enclosed in perianth, yellow-green to tan, ovate, 3-gonous, 2.4–3.5 mm, faces unequal, apex not beaked, edges concave or nearly straight, dull, uniformly tubercled; late-season achenes common, 3–5 mm.

slightly exserted from perianth, light brown to dark brown, ovate, 3-gonous, 2–2.3(–2.8) mm, faces subequal, concave, apex not beaked, edges concave, dull, striate-tubercled; late-season achenes uncommon, 2.5–4 mm.

= 40, 60.