Flora of North America species comparison

erect, leafy, nearly terete or angled, manyribbed.

lax, leafy toward base, filiform, ± terete.

ascending, exceeded by culm;

blades filiform, to 0.5 mm, margins mostly involute, apex trigonous, tapering.

terminal and axillary, clusters of corymbs 1–5, usually diffuse; leafy bracts exceeding proximal corymbs.

mostly lax cymes or clusters of cymes, 1–2, sparse, turbinate, branches capillary; leafy bracts setaceous, exceeding proximal cymes, shorter than, equaling or slightly exceeding distal cymes.

dark brown, lanceoloid to ovoid, mostly 4–6(–8) mm, apex acute;

fertile scales many, ovate, rounded-convex, 2–3.5 mm, apex acute, midrib mostly included, rarely forming apiculus.

redbrown, fusiformlanceoloid, 5 mm, apex acute;

fertile scales lanceolate, 3.5–4.5 mm, apex acute or acuminate, midrib included or shortexcurrent.

perianth absent.

perianth bristles 6, exceeding tubercle base, antrorsely barbellate, basally setose.

1–1.3(–1.5) mm, body dark brown, tumidly lenticular, nearly orbicular, 0.7–1 × 0.7–1 mm, margins strong, interrupted at tubercle base;

surfaces irregularly transversely rugulose with wavy rows of vertical, linear, raised cells;

tubercle depressed-triangular, 0.1–0.3 mm, capping fruit summit, base broadly 2lobed.

1 per spikelet, 2.8–3 mm;

body pale brown, obovoidpyriform, tumidly lenticular, 1.5–1 × 1 mm;

surfaces transversely wavyrugose, intervals vertically striate with narrow, raised alveolae;

tubercle flat, narrowly triangular-subulate, (0.8–)1–1.5 mm.

midculm leaves often exceeding inflorescences;

blades linear, proximally flattened, 1–5 mm wide, apex trigonous, tapering.