Flora of North America species comparison

lax,filiform, leafy, terete, grooved.

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

ascending to erect, exceeded by culm, blades lax, filiform, margins proximally deeply involute, apex trigonous, tapering.

overtopped by scape;

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

mostly cymose clusters, simple or compound, 1–3(–4), widely spaced, loose, narrowly to broadly turbinate;, branchies capillary, ascending to spreading, leafy bracts setaceous, exceeded by or exceeding cymes.

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

light redbrown or brown, lanceovoid to fusiform, 3–4(–4.5) mm, apex acuminate, fertile scales ovate, mostly 2–3 mm, apex rounded to acute, midrib included or shortexcurrent.

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

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

perianth bristles mostly 6, unequal, rarely extending past fruit midbody, antrorsely barbellate.

perianth absent.

1–4 per spikelet, 1.8–2 mm, body yellowbrown to brown, lustrous, tumidly obovoidlenticular, 1–1.5 × 1–1.5 mm, surfaces transversely wavyrugose, intervals vertically striate with narrow alveolae, tubercle flat, triangular, 0.3–0.6 mm.

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.