Flora of North America species comparison

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

erect to ascending, leafy, stiff.

ascending, exceeded by culms;

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

shorter than scape;

blades narrowly linear, (1–)2–3 mm wide, margins involute, apex trigonous, tapering.

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

clusters 1–2, if 2 then close together, dense, broadly turbinate to hemispheric or lobedglobose;

primary leafy bract linear, stiff, exceeding clusters.

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.

light to dark redbrown, lanceovoid, 3.5–6 mm, apex acuminate;

fertile scales ovate, convex, 3–3.5(–4) mm, apex acuminate, low midrib excurrent or not.

perianth bristles 6, longest exceeding tubercle, antrorsely barbellate.

perianth bristles 6, reaching at least to tubercle base, plumose from base to more than 1/2 length of fruit body.

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(–2) per spikelet, (2–)2.5–2.8(–3) mm;

body redbrown or brown, tumidly obovoid, (1.5–)2–2.2 × 1–1.7 mm;

surfaces interruptedly transversely rugulose;

tubercle broadly conic, 0.5–0.8(–1) mm, base broadly 2lobed, apex often apiculate.