Flora of North America species comparison

erect or ascending, leafy, trigonous.

lax, leafy toward base, filiform, ± terete.

exceeded by culm;

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

ascending, exceeded by culm;

blades filiform, to 0.5 mm, margins mostly involute, apex trigonous, tapering.

terminal and axillary;

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

mostly lax cymes or clusters of cymes, 1–2, sparse, turbinate, branches capillary; leafy bracts setaceous, exceeding proximal cymes, shorter than, equaling or slightly exceeding distal cymes.

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

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

redbrown, fusiformlanceoloid, 5 mm, apex acute;

fertile scales lanceolate, 3.5–4.5 mm, apex acute or acuminate, midrib included or shortexcurrent.

perianth bristles mostly 6, exceeding tubercle tip.

perianth bristles 6, exceeding tubercle base, antrorsely barbellate, basally setose.

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 per spikelet, 2.8–3 mm;

body pale brown, obovoidpyriform, tumidly lenticular, 1.5–1 × 1 mm;

surfaces transversely wavyrugose, intervals vertically striate with narrow, raised alveolae;

tubercle flat, narrowly triangular-subulate, (0.8–)1–1.5 mm.