Flora of North America species comparison

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;

sheaths distally ciliate, backs mostly glabrous;

ligule line of short hairs;

blades narrowly linear, 2–3 mm wide, flat to broadly involute, scabridciliate, adaxially smooth or hirtellous.

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 open, ascending-branched, longer than broad;

scapes slender, 1 mm wide, slightly compressed distally;

proximalmost involucral bract exceeding 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 drab brown to chestnut brown, ovoid-lanceoloid, 4–8 mm;

fertile scales broadly oblong or ovate, 2 mm, acute to obtuse angled, glabrous, midrib reaching scale tip or excurrent, finely mucronate.

stamens 3;

styles 2-fid, flat, fimbriate.

stamens 1–2;

styles 2-fid, flat, fimbriate.

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

white to brownish, lenticular, obovoid, 1–1.2 mm, cancellate, each face longitudinally with (5–)10–12 ribs, connected by vertical rows of horizontally rectangular pits.

= 20.

= 20, 30.