Flora of North America species comparison

arching, leafy, obscurely and convexly trigonous, multi-ribbed, slender to stoutish.

spikelet clusters 3–several, widely spaced, often equidistant, mostly hemispheric to globose, occasionally lobed, 1–2 cm thick;

bracteal leaves much exceeding subtended inflorescence.

dark red-brown to dark brown, lanceellipsoid to ellipsoid, 4–5(–6) mm, apex acute;

fertile scales elliptic, 3–3.5(–4.5) mm, apex acute, midribs 3, laterals indistinct.

perianth bristles 6, reaching tubercle tip, retrorsely (rarely antrorsely) barbellate.

1(–2) per spikelet, 3.5–4(–4.2) mm;

body brown with pale center, obovoid distal to stipe, lenticular, 2–2.3 × 1–1.5(–2) mm;

tubercle triangular-subulate, (1–)1.5–2 mm, at least 0.5 mm wide at base.

leaves overtopped by culm;

blades linear, flat proximally, 1.5–3 mm wide, apex tapering, trigonous.