Flora of North America species comparison

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

lax, erect to excurved, leafy toward base, filiform.

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 scape;

blades filiform, distally flattened, channeled, tapering, to 1 mm wide, margins strongly involute, apex blunt.

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

spikelet clusters 1–3, laterals widely spaced, all narrowly turbinate, ellipsoid, or ovoid; leafy bracts setaceous, overtopping proximal clusters, often overtopped by terminal ones.

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.

erect or ascending, redbrown, lanciform, mostly 4.5–5 mm, apex acute;

fertile scales lanceolate, (3–)4–4.5 mm, apex acute, apiculate.

bristles 6, reaching from mid tubercle to beyond tip.

perianth absent.

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(–5) per spikelet;

stipe and receptacle 0.1–0.2(–0.3) mm, setose;

body brown with pale glassy center, narrowly obovoidellipsoid, lenticular, 1.2–1.5 mm, margins narrow, flowing to tubercle;

surfaces very finely lined longitudinally, transversely with wavy lines of tiny pits;

tubercle narrowly triangular or slightly concavesided, flattened, 0.7–1.2(–1.5) mm.