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.

nearly distichous, ascending, 1/2–3/4 length of culms;

sheath margins ciliolate, adaxial surface sparsely to copiously hirtellous distally;

ligule present, complete;

blades narrowly linear, 2–4(–5) mm wide, flat to shallowly involute, margins ciliate-scabrid, abaxial surface pilose-hirsute.

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.

anthelae compound, ascending-branched, longer than broad;

scapes distally oval or flattened, glabrous to pubescent;

longest involucral bract exceeding 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.

rusty brown, lanceoloid, 4–6 mm;

fertile scales broadly ovate to nearly orbiculate, 2–3 mm, broadly acute, midrib excurrent as mucro or cusp.

stamens 3;

styles 2-fid, flat, fimbriate.

stamens 2;

styles 2-fid, flat, fimbriate.

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

pale to dark brown with pale umbo, lenticular-obpyriform, 1.7–2 mm, finely pitted, appearing nearly smooth, the pits in at least 20 narrow vertical rows per face.

= 20.

= 10.