Flora of North America species comparison

erect or ascending, leafy, trigonous.

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

exceeded by culm;

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

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.

terminal and axillary;

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

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

primary leafy bracts linear, stiff, exceeding clusters.

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

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

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.

perianth bristles mostly 6, exceeding tubercle tip.

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

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.

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.