Flora of North America species comparison

spreading to erect, leafy, obtusely triangular.

erect or ascending, leafy, trigonous.

often exceeding inflorescences;

blades narrowly linear, proximally flat, 1–3 mm wide, apex trigonous, tapering.

exceeded by culm;

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

terminal and axillary, clusters of 1–5 corymbs; leafy bracts much exceeding corymbs.

terminal and axillary;

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

few to several, on ascending, stiff, short-to-elongate branches, red-brown to brown, lanceoloid, (5–)6–10 mm, apex acuminate;

fertile scales many, ovate, shallowly convex, 5 mm, apex acuminate;

midrib short-excurrent or not.

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

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

perianth absent.

perianth bristles mostly 6, exceeding tubercle tip.

1.5 mm;

body dark brown to black, tumidly lenticular, nearly orbicular, 0.8–0.9 × 0.6–0.7 mm, margins grooved, discontinuous with tubercle;

surfaces transversely wavyrugose, ridges of contiguous rows of vertical, linear, raised cells;

tubercle broad, low triangular, 0.2–0.3 mm, crustaceous, base capping fruit summit, raised at ends, apex shortacuminate.

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.