Flora of North America species comparison

erect, leafy, nearly terete or angled, manyribbed.

erect to ascending, narrowly linear, wandlike, terete, leafy proximal to middle.

erect to ascending;

blades proximally flat, 2.5–3.5 mm wide, apex tapering, tip abruptly blunt.

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

terminal, cluster of spikelets crowded, broadly turbinate to hemispheric, to 1.5 cm wide; leafy bracts linearsetaceous, slightly exceeding cluster.

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.

orangebrown, lancefusiform, 6–7 mm, apex acuminate;

fertile scales lanceovate, 4–5 mm, apex acuminate with excurved awn to 1 mm.

perianth absent.

bristles 3–4, some reaching tubercle tip, antrorsely barbellate.

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.

1–2 per spikelet, 2–2.1 mm;

body brown with paler center, obovoidlenticular, 1.5–1.7 × 1.2–1.3 mm, margins flowing to tubercle;

surfaces finely transversely striate with minute pits;

tubercle lowtriangular, 0.3–0.5 mm.

midculm leaves often exceeding inflorescences;

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