Flora of North America species comparison

erect, leafy, nearly terete or angled, manyribbed.

lax, often excurved, slender, ± terete or trigonous.

ascending, exceeded by culm;

blades linear, proximally flat, 1.5–2.5 mm wide, apex trigonous, subulate, tapering.

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

clusters 3–4, widely spaced, narrowly, compactly, or diffusely turbinate; leafy bracts exceeding proximal clusters.

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.

deep redbrown, ovoid to broadly ellipsoid, 2–3 mm, apex acute to acuminate;

fertile scales broadly elliptic to obovate or orbiculate, 1.4–2(–2.5) mm, apex rounded to notched, midrib shortexcurrent.

perianth absent.

perianth bristles 0–3, vestigial when present.

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.

2–4 per spikelet, 1.5 mm;

body pale brown to brown, strongly flattened, orbicular to broadly obovoid, 1–1.3 × 0.9–1.2 mm, surfaces sharply transversely wavyrugose, intervals finely vertically striate with rows of linearrectangular alveolae;

tubercle depressed, triangular, flattened, 0.2–0.3 mm, base lunate.

midculm leaves often exceeding inflorescences;

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