Flora of North America species comparison

erect to excurved, leafybased, narrowly linear, ± terete.

erect or ascending, slender, leafy proximal to middle, somewhat stiff.

shorter than culm;

blades ascending, narrowly linear, proximally flat or margins slightly involute, 0.5–1(–2) mm wide, distally canaliculate, apex trigonous, tapering, subulate.

overtopped by culm;

blades ascending, ± filiform, proximally flat or slightly concave, to 1 mm wide, apex narrowing, trigonous, abruptly blunt.

spikelet clusters 1–3, laterals 0–2, all turbinate to hemispheric, terminal internode usually excurved; leafy bracts setaceous, overtopping inflorescence.

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

primary leafy bract setaceous, exceeding clusters.

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

fertile scales lanceolate, (2.5–)4–5 mm, apex acute to acuminate;

midrib paralleled by several indistinct ribs, excurrent as short awns.

redbrown, ovoid, 2–2.5(–4) mm, apex acute;

fertile scales broadly ovate, 1.5–1.9(–2) mm, apex acute to acuminate, midrib excurrent as awn to 0.5 mm.

bristles 6, reaching from mid tubercle to beyond tip.

bristles 6, some reaching to apex of fruit body.

3(–4) per spikelet, 2.1–2.5 mm;

stipe and receptacle 0.2–0.3 mm, sparsely setose and setulose;

body glossy, brown with pale center, obovoid-lenticular, 1.1–1.5 × 1–1.1 mm, surfaces finely longitudinally lined, variably low papillatecancellate, also often transversely with wavy lines of dark dots;

tubercle flattened, triangular-subulate, (0.8–)0.9–1(–1.1) mm, setulose-ciliate.

2–3 per spikelet, 1–1.2(–1.4) mm;

body dull dark brown with paler brown center, lenticular, broadly obovoid to broadly ellipsoid, 1 × 0.8 mm, margins narrow, flowing to tubercle;

tubercle nearly equilaterally triangular, 0.2–0.3 mm.