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.

distichous, shorter or longer than culms;

sheaths keeled, entire or distally ciliate;

ligule of short hairs complete;

blades narrowly linear, 1–3 mm wide, flat, margin scabrid-ciliate.

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

scapes slender, 1 mm wide, slightly compressed distally;

proximalmost involucral bract exceeding anthela.

anthelae compound, mostly diffuse, mostly turbinate, as broad as long, ascending-branching;

scapes filiform to linear, distally variously compressed, sometimes alate, 0.5–1.5(–2) mm wide, edges scabrid;

primary involucral bract usually 1, blade exceeding or exceeded by anthela.

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.

red-brown or brown, mostly narrowly lanceoloid to narrowly ellipsoid, 3–7 mm;

fertile scales lanceolate, keeled, 1.5–2 mm, narrowly acute, glabrous, midrib excurrent as mucro.

stamens 1–2;

styles 2-fid, flat, fimbriate.

stamens (1–)2;

styles 3-fid, slender, with 3angled base, glabrous.

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.

pale brown, trigonous-obovoid, 0.5–0.7 mm, apiculate and 3-ribbed, smooth to variably warty.

= 20, 30.

= 10.