Flora of North America species comparison

mostly lax, ascending to leaningexcurved, leafy, linear to filiform, terete.

stiffly erect to ascending, linear, leafy toward base, sharply trigonous, angles scabrid.

shorter than culm;

blades ascending, filiform to narrowly linear, proximally flat, 0.5–1.5(–2.5) mm wide, margins distally strongly involute, apex trigonous, tapering.

shorter than culm;

basal leaves forming strong rosette, shortlinear, flat, 3–5 mm wide, distal more widely spaced, narrower, apex shortacuminate, trigonous.

spikelet clusters 1–3(–4), proximalmost distant, dense to sparse, narrowly turbinate to hemispheric;

peduncles and branches ascending; leafy bracts linearsetaceous, mostly overtopping clusters.

spikelet clusters 1(–2), if 2 then closely set;

terminal cluster mostly dense, hemispheric;

proximalmost leafy bract subulate, much exceeding clusters.

redbrown, ovoid to lanceoloid, (3.5–)4–5 mm, apex acute;

fertile scales ovate, 3–4.5 mm, apex acute, mucronate to awnedcuspidate.

dark redbrown, ovoid, (4–)5–6 mm, apex acute;

fertile scales ovate, mostly 4–4.5 mm, apex excurvedcuspidate.

bristles 6, mostly reaching tip of tubercle or beyond, antrorsely barbellate.

bristles 12, reaching to or slightly beyond tubercle tip, antrorsely barbellate.

1–3 per spikelet, (2.5–)3–3.5(–4.1) mm;

body dark brown with small pale center, lenticular, broadly ellipsoid to suborbicular, 1.3–2.1 × 1.3–1.5 mm, smooth, margins narrow, flowing into tubercle;

tubercle triangular-subulate, compressed, mostly 1.5–2 mm.

1–2 per spikelet, 3–3.5(–3.7) mm;

body dark brown with paler center, dull, broadly ellipsoid-lenticular, 2–2.5 × 1.8–2 mm, smooth, margins flowing to tubercle;

tubercle flat, concavely triangular, 0.7–1(–1.2) mm.