Flora of North America species comparison

erect or spreadingarching, linearfiliform, terete, leafy toward base.

erect or ascending, leafy, nearly terete or obscurely angular, many-ribbed, stiff.

overtopped by culm;

blades ascending, filiform, 0.3–0.5 mm wide, margins deeply involute, then channeled, apex trigonous, setaceous.

exceeding or exceeded by inflorescences;

blades linear, proximally flat, 1–5 mm wide, apex trigonous, tapering.

spikelet clusters 1–2(–4), dense(–open), narrowly to broadly turbinate;

branches capillary, variously elongate; leafy bracts setaceous, proximal exceeding clusters.

terminal and axillary, clusters of corymbs 1–5, diffuse, branches ascending to divaricate; leafy bracts much exceeding axillary corymbs.

brownish, lanceellipsoid to fusiform, 2–2.5(–3) mm, apex acute;

fertile scales broadly elliptic, 1.5 mm, apex narrowly rounded to broadly acute, apiculate, convexcupulate, midrib narrow, shortexcurrent or included.

redbrown to dark brown, ovoidlanceoloid, 3–6(–7) mm, apex acute;

fertile scales several, narrowly ovate, 2.5–3.5 mm, apex narrowly acute;

midrib included or shortexcurrent.

perianth absent.

perianth absent.

1–3 or more per spikelet, (0.6–)0.7–0.9(–1) mm;

body pale, glassy, obovoidlenticular, 0.6–0.7 × 0.4–0.5 mm, margins narrow, wirelike;

surfaces finely striate, very finely reticulate;

tubercle button depressedtriangular or patelliform, 0.1–0.15 mm, apiculate.

1.3–1.5 mm;

body brown to blackish, tumidly lenticular, nearly orbicular, 0.6–1 × 0.6–1 mm, margins distinct, narrow, flowing into base of tubercle;

tubercle flat, narrowly triangular, at least 0.5 mm high, base broadly 2-lobed, apex acuminate.