Flora of North America species comparison

sometimes solitary, narrowly linear, distally angular, glabrous.

polystichous, mostly spreading or excurved, often exceeding culms;

sheaths entire, abaxially smooth or sparsely hirtellous;

ligule absent;

blades filiform, to 0.5 mm wide, somewhat involute, abaxially glabrous or ascending-strigillose.

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.

terminal;

spikelets sessile or subsessile in single capitate leafy-involucrate cluster;

scapes filiform;

involucral bracts leafy, setaceous, greatly overtopping inflorescence.

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.

greenish, cylindric to lanceoloid-cylindric, 5–10 mm;

fertile scales narrowly ovate to lanceolate, 1–1.5 mm, acute, glabrous, midrib strong, excurrent as cusp.

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.

stamens 1;

styles 2-fid, slender, bulbous-based, smooth or papillate.

stamens 3;

styles 2-fid, flat, fimbriate.

pale, tumidly obovoid, 0.5–0.7 mm, cancellate, pits horizontally rectangular in 5–7 vertical rows per side.

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

= 20.

= 20.