Flora of North America species comparison

erect or ascending, leafy, trigonous.

lax, filiform, leafy.

exceeded by culm;

blades linear, proximally 4–7 mm wide, apex trigonous, tapering.

spreading to ascending, exceeding or exceeded by culm;

blades 0.2–0.3 mm wide, margins strongly involute or channeled, apex trigonous, tapering, setaceous.

terminal and axillary;

clusters 3–6, mostly dense, narrowly to broadly turbinate, branches ascending; leafy bracts exceeeding proximalmost inflorescences.

cluster of cymes 1–2, widely spaced, turbinate, sparse;

branches few; foliaceous bracts setaceous, longer than cymes.

rich brown, ovoid, (3–)4–5 mm, apex acuminate;

fertile scales ovate, 2.5–3.5 mm, apex acuminate, midrib included or shortexcurrent.

brown, lanceovoid to fusiform, 2.5–3 mm, apex acuminate;

fertile scales ovate, 1.5 mm, apex acute, midrib shortexcurrent.

perianth bristles mostly 6, exceeding tubercle tip.

perianth absent.

mostly 3–4 per spikelet, 2–2.2 mm;

body brown on short pedicellar (to 0.3 mm) stalk, broadly obovoid, lenticular, 1.3–1.5 × 1–1.5 mm, surfaces transversely rugulose, vertically finely striate and rectangularalveolate;

tubercle compressed, triangular acuminate, 0.5–0.8 mm, edges setulose.

0.9–1 mm;

body lustrous pale brown, ellipsoidlenticular, 0.8–0.9 × 0.5–0.6 mm, margins narrow, wirelike;

surfaces minutely reticulate;

bristles 4–6, the longest from shorter than fruit midbody to fully as long, rarely reaching tubercle tip, minutely antrorsely barbellate;

tubercle shortconic, to 0.15 mm.