Flora of North America species comparison

to 30 cm, bases soft.

to 40 cm, wiry.

spreading to ascending, ¼–1/3 length of scapes;

sheath borders tan, backs prominently ribbed, glabrous;

blades filiform, 0.5 mm wide, involute, margins ciliate-scabrid, surface glabrous.

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.

solitary or more commonly in simple, open, rarely compact, involucrate anthelae;

scapes filiform (rarely with several spikelets sessile or subsessile at plant base), prominently ribbed, glabrous;

proximalmost involucral bract cuspidate or setaceous bladed, 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, ovoid to lanceoloid, 3–5 mm;

fertile scales ovate, 1.5–2 mm, apex acute, glabrous or distally puberulent, keel prominent, short-excurrent.

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 (1–)2;

anthers oblong-elliptic, 0.5–0.7 mm.

stamens 2–3;

anthers narrowly oblong, 0.8–1 mm.

yellowish to pale brown, trigonous-obovoid, 1 mm, faces rugose.

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

tubercle a small, dark, compressed-conic button.

= 84.