Flora of North America species comparison

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

arching, slender, leafy.

ascending, exceeded by culms;

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

exceeded by culm;

blades elongate linear, proximally flat, 2–3 mm wide, apex trigonous, subulate.

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

terminal and lateral, clusters 2–3, loosely turbinate, clusters, capillary pedunculate;

distal foliaceous bracts mostly exceeded by inflorescences.

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 per cluster, brown, broadly ovoid, 4 mm, apex acuminate;

fertile scales oblongovate, 3 mm, midrib forming small awn.

perianth bristles 6, longest exceeding tubercle, antrorsely barbellate.

perianth bristles 6, exceeding tubercle tip, antrorsely barbellate.

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.

mostly 2 per spikelet, 3 mm;

body pale yellowbrown, pyriform-obovoid, lenticular, 2 × 1.4 mm;

surfaces transversely wavyrugulose, vertically striatealveolate between ridges;

tubercle subulatetriangular, 1 mm.