Flora of North America species comparison

erect to arching-ascending, leafy, wand-like.

erect to arching, leafy, linear to filiform, nearly triangular.

mostly basal, few and increasingly distant upculm, shorter than scape;

blades narrowly linear, concave proximally, (1–)2–3 mm wide, tapering and increasingly involute-sulcate proximally, margins scabrid, apex triquetrous, tip narrow but blunt.

ascending, overtopped by culm;

blades flat, linear to filiform, to 1.8 mm wide, apex distally involute, trigonous, setaceous.

clusters 1(–2), if 2 then close together, dense, broadly turbinate to hemispheric;

primary leafy bracts linear, stiff, exceeding clusters.

terminal and axillary, spikelet clusters 2–4, widely spaced, the lowest near plant base;

clusters compact, broadly turbinate to hemispheric, to 1.5 cm wide; leafy bracts curved, setaceous, slightly to greatly overtopping subtended compounds.

light brown, narrowly lanceoloid, 8–10 mm, apex acuminate;

fertile scales lanceolate, convex, (6–)7–8 mm, apex narrowly acute, low midrib short-excurrent or not.

dark brown, lance-ellipsoid, 2–3 mm;

fertile scales 2 mm, apex acute, midrib short-excurrent or not.

perianth bristles 6, excurved, plumose from base to midbristle, 5–7.5 mm, antrorsely barbellate to tip.

perianth bristles 6, ± as long as fruit body, retrorsely barbellate.

1–2 per spikelet, 2.3–2.6 × 1.1–1.2 mm;

body brown, short-stipitate, tumidly obovoid, subterete, 1.8–2 mm, margin low, broad;

surfaces interruptedly transversely wavy-rugulose;

tubercle broadly and concavely conic, 0.5–0.7 mm high, base shallowly 2-lobed, discoid, abruptly narrowed to blunt tip.

mostly 2 per spikelet, 1.5–1.9 mm;

body brown with yellowish center, ellipsoid, lenticular distal to short stipe, 1–1.3 × 0.6–0.8 mm;

tubercle triangular, 0.3–0.6 mm, distinctly shorter than fruit body.