Flora of North America species comparison

erect to excurved, filiform, leafy, ± terete.

spreading to erect, leafy, obtusely triangular.

shorter than culm;

blades ascending, filiform, proximally to 1.5(–2)mm wide, apex trigonous, tapering, setaceous.

often exceeding inflorescences;

blades narrowly linear, proximally flat, 1–3 mm wide, apex trigonous, tapering.

lateral spikelet clusters (0–)1–2, distant, terminal cluster ellipsoid to broadly turbinate or hemispheric, branches ascending; leafy bracts setaceous, overtopping clusters.

terminal and axillary, clusters of 1–5 corymbs; leafy bracts much exceeding corymbs.

red-brown to deep brown, lanceoloid, (4–)5–6(–7) mm, apex acute;

fertile scales lanceolate, 4–5(–6) mm, apex acuminate, midrib often excurrent as awn.

few to several, on ascending, stiff, short-to-elongate branches, red-brown to brown, lanceoloid, (5–)6–10 mm, apex acuminate;

fertile scales many, ovate, shallowly convex, 5 mm, apex acuminate;

midrib short-excurrent or not.

bristles 5–6, longest reaching at least past tubercle base, mostly to tip or beyond, antrorsely barbellate.

perianth absent.

2(–3) per spikelet, (2.3–)2.5–2.6(–3) mm with pedicellar joint, receptacle, and tubercle;

body lustrous, pale brown to deep brown, obovoid to ellipsoid, lenticular, 1–1.5 × 1 mm, margins narrow, flowing to tubercle;

surfaces longitudinally finely lined, transversely very finely ridged with wavy rows of very narrow, vertical lattices, sometimes also with lines of shallow pits;

tubercle triangularsubulate, (0.7–)1–1.3(–1.5) mm, base lunate, margins setulose proximally.

1.5 mm;

body dark brown to black, tumidly lenticular, nearly orbicular, 0.8–0.9 × 0.6–0.7 mm, margins grooved, discontinuous with tubercle;

surfaces transversely wavyrugose, ridges of contiguous rows of vertical, linear, raised cells;

tubercle broad, low triangular, 0.2–0.3 mm, crustaceous, base capping fruit summit, raised at ends, apex shortacuminate.