Flora of North America species comparison

erect or ascending, leafy, trigonous, slender.

all exceeded by culm;

basal blades spreading, often curled, distal longer, all proximally flat, 3–5 mm wide, apex trigonous, subulately tapering.

clusters 3–5, proximalmost distant, longest pedunculate, fascicles broadly turbinate to hemispheric; leafy bracts of distal groups mostly exceeded by inflorescence.

lanceovoid, (3.5–)4–5 mm;

fertile scales broadly ovate to ± orbiculate, cupulate, rounded, 3 mm, apex apiculate to cuspidate, midrib excurrent.

perianth bristles 6, overtopping tubercle (or at least its base), antrorsely barbellate.

1–3 per spikelet, 2.3–3 mm;

body brown, strongly compressed proximally, biconvex distally, broadly obovoid, 1.8–2.2 × 1.5 mm;

surfaces strongly transversely rugose, intervals with rows of narrow, vertical alveolae;

tubercle triangular, flat, 1 mm, base lunate, capping fruit apex, apiculate.