Flora of North America species comparison

erect to excurved, leafybased, filiform.

arching-ascending, leafy, obtusely trigonous, slender;

principal leaves overtopped by inflorescence;

blades flat, to 3 mm, apex tapering, trigonous.

shorter than culm;

blades ascending to excurved, filiform, proximally to 1 mm wide, margins involute, apex trigonous, subulate, tapering.

spikelet clusters 1–3, laterals 0–2, turbinate, rarely hemispheric; leafy bracts setaceous, overtopping inflorescence.

terminal and axillary, clusters 1–5 or more, compact, turbinate or hemispheric, 1–1.5 cm wide;

peduncles progressively shorter distally on culm;

bracteal leaves mostly exceeding subtended compounds.

redbrown, narrowly lanceoloid, 5–7 mm, apex acute;

fertile scales lanceolate, 3.5–5 mm, apex acute, mucronate.

rich deep brown, rarely pale brown, lanceellipsoid, 3.5–4(–5) mm;

fertile scale elliptic, 2.7–3 mm, apex acute or rounded, midrib shortexcurrent or not.

perianth absent.

perianth absent.

2(–5) per spikelet, (1.7–)2–2.2 mm;

body on short, setulose receptacular stipe, brown with pale center, obovoidlenticular, 0.8–1.1 mm, surfaces very finely longitudinally lined, sometimes faintly reticulatecancellate;

tubercle triangular subulate, 0.7–0.9 mm, base lunate, edges setulose.

(1–)2–3(–5) per spikelet, (2–)2.5–3 mm;

body redbrown with pale central disc, stipitate, lenticular, obovoid, 1.2–1.5 × 0.7–1(–1.2) mm, margins pale, wirelike, surfaces slick;

tubercle triangular-subulate, (0.8–)1–1.2(–1.6) mm.