Flora of North America species comparison

erect to ascending, leafy, stiff.

arching, leafy, droopingtipped, ± terete, ribbed, slender.

shorter than scape;

blades narrowly linear, (1–)2–3 mm wide, margins involute, apex trigonous, tapering.

clusters 1–2, if 2 then close together, dense, broadly turbinate to hemispheric or lobedglobose;

primary leafy bract linear, stiff, exceeding clusters.

clusters of spikelets 3–6, progressively wider-spaced proximally, narrow, elongate; leafy bracts slender, mostly exceeding clusters.

light to dark redbrown, lanceovoid, 3.5–6 mm, apex acuminate;

fertile scales ovate, convex, 3–3.5(–4) mm, apex acuminate, low midrib excurrent or not.

redbrown, lanceoloid, 5–7 mm, apex acuminate;

fertile scales narrowly ovate, 4–5 mm, apex acuminate, midrib included or shortexcurrent.

perianth bristles 6, reaching at least to tubercle base, plumose from base to more than 1/2 length of fruit body.

perianth bristles 6, exceeding tubercle, antrorsely barbellate.

1(–2) per spikelet, (2–)2.5–2.8(–3) mm;

body redbrown or brown, tumidly obovoid, (1.5–)2–2.2 × 1–1.7 mm;

surfaces interruptedly transversely rugulose;

tubercle broadly conic, 0.5–0.8(–1) mm, base broadly 2lobed, apex often apiculate.

(1–)2–3(–4) per spikelet, 3–3.2 mm;

body brown, narrowly oblong-ellipsoid, flattened, 2 × 0.8–1 mm;

surface strongly transversely wavyrugose, vertically finely striate between ridges;

tubercle compressed, narrowly triangular-subulate, 1 mm.

leaves exceeded by culm;

blades spreading to ascending, narrowly linear, proximally flat, 2–3.5 mm wide, apex trigonous, tapering.