Flora of North America species comparison

to 30 cm, bases soft.

at most to 7 cm.

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.

overtopping scapes;

sheaths pale, shorter than blade;

blades spreading or curving outward, filiform, 0.5 mm wide, flat to slightly involute, margins thickened, scabrid.

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.

spikelets solitary, either atop short, stiff glabrous scapes or very short-scaped to subsessile and clustered at plant base, pale with greenish scale midribs, ovoid, 5 mm;

involucral bracts 2, the proximal strongly bladed, much exceeding spikelet.

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.

fertile scales lanceolate, keeled, 3.5 mm, keel excurrent as mucro or cusp.

stamens (1–)2;

anthers oblong-elliptic, 0.5–0.7 mm.

stamens 3;

anthers narrowly oblong, 0.5 mm.

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

yellowish or pale gray, ribs prominent, trigonousobovoid, 1 mm, faces evenly, finely transversely rugose.

= 84.