Flora of North America species comparison

sometimes solitary, narrowly linear, distally angular, glabrous.

ascending, from 1/3 as long to equally as long as culms, glabrous to pubescent;

sheaths apically ciliate;

ligule essentially absent or (in rhizomatous individuals) present, complete or incomplete;

blades narrowly linear, 1–2 mm wide, mostly strongly involute, scabrid-ciliate.

distichous, in fans, to ca. 2/3 plant height;

sheaths keeled, equitant, margins entire;

ligule absent;

blades bifacial (flattened in same plane as sheath), narrowly triangularlinear, to 2 mm wide, margins scabrid at least distally.

anthelae simple or compound, compact or diffuse, mostly broad, ascending-branching;

scapes slender, wandlike, 1 mm thick;

lower leafy involucral bracts exceeded by or exceeding panicle.

anthela compound, usually diffuse, branched, broadening upward, often as broad as long;

scapes slender, angularly ribbed and/or somewhat compressed distally, 1–1.5 mm wide or thick;

involucral bracts exceeded by anthela.

variously red-brown, broadly ovoid to lance-cylindric, 5–10 mm;

fertile scales broadly ovate, obtuse or obtuse-angled, 2.5–3.5 mm, abaxially glabrous or variously puberulent, midrib excurrent as mucro.

dark red-brown, broadly ovoid to near round, 2–4 min;

fertile scales broadly ovate to orbiculate, 1 mm, glabrous, apex broadly rounded, midrib not excurrent.

stamens 3;

styles 2-fid, flat, fimbriate.

stamens 1–2;

styles 3-fid, slender, base dilated, apex pubescent.

yellowish to dark brown, lenticular-obovoid, 1 mm, with 11–20 vertical lines of horizontally rectangular or isodiametric, distinct or indistinct pits.

pale brown, tumid, obovoid, 1 mm, apiculate, reticulate, with pits narrowly rectangular in 4–6 vertical rows per side, the longitudinal ribs most prominent and mostly warty.

= 20.

= 10.