Flora of North America species comparison

wand-like, at least 50 cm.

nearly distichous, spreading to ascending, 1/2 length of culms;

sheath margins entire, backs smooth to pubescent;

ligule present, complete;

blades narrowly linear, proximally flat, 2–3.5(–4) mm wide, margins scabrid-ciliate, abaxial surface sometimes pubescent.

nearly distichous, spreading to ascending, 1/2 length of culms, sheath margins ciliolate at junction with blade, backs smooth to pubescent;

ligule present, usually complete;

blades linear, 2–5 mm wide, flat to involute, margins scabridulous, surfaces mostly glabrous.

anthelae simple or compound, longer than wide;

scapes wandlike, nearly terete or slightly compressed, distally 1 mm thick, marginal ribs scabrid;

longest primary involucral bract shorter than panicle.

anthelae compound, dense or diffuse, mostly longer than broad;

scapes wandlike, broadly linear, distally usually compressed, marginal ribs scabrid distally;

longest primary involucral bract exceeding or shorter than anthela.

pale dull brown, lance-ovoid to cylindric-ellipsoid, 10–12 mm;

fertile scales ovate, 3.5–4 mm, apex broadly acute, ciliate, surface uniformly puberulent, midrib excurrent as mucro or cusp.

pale brown or red-brown, broadly ovoid, ellipsoid, or lanceoloid, 5–15 mm;

fertile scales ovate, 3–4 mm, apex rounded, often puberulent distally, midrib excurrent as scabrid mucro or short cusp.

stamens 3;

styles 2-fid, flat, fimbriate.

stamens 3;

styles 2-fid, flat, fimbriolate.

dark brown, lenticular-obovoid, 1.5 mm, finely cancellate, with 20 or more longitudinal rows of horizontally rectangular pits per side.

pale to deep brown, lenticular-obovoid, 1 mm, finely but definitely cancellate with 14–15 horizontally oriented lattices per side.

= 20.

= 20, 30, 60.