Flora of North America species comparison

erect to ascending, leafy, slender, angular.

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

exceeded by culm;

blades linear, proximally flat, 3–6 mm wide, apex tapering, trigonous, subulate.

overtopped by scape;

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

of terminal and axillary clusters, 3–5, proximalmost widely spaced, turbinate or lobed, fascicles dense, branches ascending; leafy bracts exceeding all but proximalmost clusters.

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

rich redbrown, ovoid, (4–)5–6(–7) mm, apex acuminate;

fertile scales ovate, (3.5–)4–5 mm, apex acuminate, midrib short or longexcurrent.

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 6, reaching past tubercle, antrorsely barbellate.

perianth absent.

mostly 3–4(–7) per spikelet, 3 mm with pedicellar joint and tubercle;

body pale yellowbrown, obovoidlenticular, 1.4–1.7 × 1.4 × 1.5;

surfaces transversely finely wavyrugulose, intervals vertically rectangularalveolate;

pedicellar joint 0.3–0.6 mm;

tubercle compressed, triangularacuminate, 0.5–0.6 (–1) mm, margin setulose.

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.