Flora of North America species comparison

arching, leafy, droopingtipped, ± terete, ribbed, slender.

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

ascending, exceeded by culms;

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

clusters of spikelets 3–6, progressively wider-spaced proximally, narrow, elongate; leafy bracts slender, mostly exceeding clusters.

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

redbrown, lanceoloid, 5–7 mm, apex acuminate;

fertile scales narrowly ovate, 4–5 mm, apex acuminate, midrib included or shortexcurrent.

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.

perianth bristles 6, exceeding tubercle, antrorsely barbellate.

perianth bristles 6, longest exceeding tubercle, antrorsely barbellate.

(1–)2–3(–4) per spikelet, 3–3.2 mm;

body brown, narrowly oblong-ellipsoid, flattened, 2 × 0.8–1 mm;

surface strongly transversely wavyrugose, vertically finely striate between ridges;

tubercle compressed, narrowly triangular-subulate, 1 mm.

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.

leaves exceeded by culm;

blades spreading to ascending, narrowly linear, proximally flat, 2–3.5 mm wide, apex trigonous, tapering.