Flora of North America species comparison

10–30(–40) cm, bases hard, swollen.

to 40 cm, wiry.

¼–1/2 length of scapes;

sheaths brown to stramineous, abaxially glabrous or hirtellous;

blades spreading to erect, filiform, wiry, less than 1 mm wide, involute, margins and adaxial surface glabrous to hispidulous or scabrid.

¼–1/2 length of culms;

sheaths stramineous to tan or brown, glabrous or scabrid on ribs;

blades spreading to ascending, filiform, 0.5 mm wide, involute, margin glabrous or scabrid, abaxially glabrous or hirtellous.

terminal, mostly in compound, compact or diffuse, involucrate anthelae;

scapes ascending to erect, wiry, 1 mm thick, coarsely ribbed, ribs glabrous or hispidulous to scabrid;

proximal bladed involucral bract exceeding or exceeded by inflorescence.

terminal, in simple or compound anthelae;

scapes wiry, coarsely ribbed, glabrous or strumose-puberulent;

longer primary involucral bracts with setaceous blades exceeding or exceeded by inflorescence.

red-brown to chestnut-brown, lanceoloid to cylindric, 4–6 mm, mostly longer than broad;

fertile scales ovate, curvate-keeled, 2–2.5 mm, apex acute, glabrous or papillose-puberulent, midrib excurrent as mucro or mucronula.

red-brown to dark brown, lanceoloid to cylindric, longer than wide, 2–6 mm;

fertile scales broadly ovate, keeled, 1–1.3 mm, apex acute, abaxially puberulent, midrib included or excurrent as mucro.

stamens 3;

anthers linear, 1–2 mm.

stamens 2–3;

anthers narrowly oblong, 0.8–1 mm.

gray to yellow-brown or dark brown, trigonous-obovoid, 1–1.2(–1.5) mm, faces rugulose, papillate;

tubercle a globose button.

mostly waxy gray, trigonous, obovoid, 0.8–1.5 mm, faces evenly papillate, finely rugulose or level;

tubercle a small, dark, compressed-conic button.

= 60.