Flora of North America species comparison

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.

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.

anthelae compound, dense or open, ascending-branched, longer than broad;

scapes slender, 1 mm wide, slightly compressed distally;

proximalmost involucral bract exceeding anthela.

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.

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.

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.

stamens 1–2;

styles 2-fid, flat, fimbriate.

stamens 3;

styles 2-fid, flat, fimbriate.

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.

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

= 20, 30.

= 20.