Flora of North America species comparison

slender, ± filiform, leafy, terete to bluntly trigonous.

spreading to erect, leafy, obtusely triangular.

shorter than culm;

blades spreading to ascending, ± filiform, proximally flat, 0.5–1(–1.5) mm, apex tapering, trigonous.

often exceeding inflorescences;

blades narrowly linear, proximally flat, 1–3 mm wide, apex trigonous, tapering.

spikelet clusters 1–3, loose to dense, widely spaced to close together, turbinate to hemispheric; leafy bracts setaceous, mostly exceeding spikelet clusters.

terminal and axillary, clusters of 1–5 corymbs; leafy bracts much exceeding corymbs.

dark redbrown, lanceovoid, 2.5–3.5(–4) mm, apex acute;

fertile scales ovate, 2–3.5 mm, apex acute or acuminate, rarely minutely awned.

few to several, on ascending, stiff, short-to-elongate branches, red-brown to brown, lanceoloid, (5–)6–10 mm, apex acuminate;

fertile scales many, ovate, shallowly convex, 5 mm, apex acuminate;

midrib short-excurrent or not.

bristles 6, of various length, mostly extending from fruit midbody to tubercle base, antrorsely barbellate.

perianth absent.

1–2 per spikelet, (2–)2–2.5 mm;

body brown with pale center, lenticular, broadly ellipsoid, 1.5–1.7 × 1.2–1.3 mm, surfaces nearly smooth or very finely cancellate;

tubercle flat, triangular with short-oblong, blunttipped nose, or triangularsubulate, 0.5–0.8 mm.

1.5 mm;

body dark brown to black, tumidly lenticular, nearly orbicular, 0.8–0.9 × 0.6–0.7 mm, margins grooved, discontinuous with tubercle;

surfaces transversely wavyrugose, ridges of contiguous rows of vertical, linear, raised cells;

tubercle broad, low triangular, 0.2–0.3 mm, crustaceous, base capping fruit summit, raised at ends, apex shortacuminate.