Flora of North America species comparison

lax, leafy, wandlike, ± terete to obscurely angled, slender.

spreading to erect, leafy, obtusely triangular.

ascending, exceeded by culms;

blades flat, 4–7(–10) mm wide, apex trigonous, shortacuminate, tapering.

often exceeding inflorescences;

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

spikelet clusters 4–6 or more, equidistant along culm on ascending peduncles, branches capillary, divaricate, clusters loose, diffuse, rounded.

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

light brown, ellipsoid to lanceoloid or ovoid, 2.5–3.5 mm, apex acute;

fertile scales ovate, (1.5–)2–3 mm, apex rounded or acute, midrib forming apiculus.

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.

perianth bristles 6, longest exceeding tubercle, antrorsely barbellate.

perianth absent.

2–several per spikelet, 1.3–1.5 mm;

body pale brown, broadly obovoid, tumidly biconvex, 1.1–1.2 × 1–1.1 mm;

surfaces transversely sharply wavyrugulose, intervals with vertical, rectangular, shallow alveolae;

tubercle depressedconic, slightly compressed, 0.2–0.3(–0.4) mm, edges setulose.

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.