Flora of North America species comparison

spreading to erect, leafy, obtusely triangular.

erect to ascending, leafiest at base, triangular, slender, somewhat stiff.

often exceeding inflorescences;

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

exceeded by culm;

basal blades crowded, spreadingexcurved, distal ascending, linear, proximally flat, 3–5 mm wide, apex trigonous, shortsubulate.

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

spikelet clusters 3–5, compact, the proximalmost widely spaced, turbinate or lobed to hemispheric; leafy bracts setaceous, mostly overtopping clusters.

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.

redbrown, broadly ovoid, 3–3.5(–4) mm, apex acuminate;

fertile scales broadly ovate to ± orbiculate, 2–2.5(–3) mm, apex rounded to notched, midrib included or shortexcurrent.

perianth absent.

perianth bristles 6, reaching from fruit midbody to tubercle, antrorsely barbellate.

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.

1–2 per spikelet, (2–)2.5–2.8(–3) mm;

body brownish, broadly obovoid to nearly orbicular, 1.5–2 × 1.5–2 mm;

surfaces strongly transversely wavyrugose, intervals rows of vertical, rectangular alveolae;

tubercle conic-subulate, basal rim flaring above short neck on achene.