Flora of North America species comparison

erect or spreading, slender, stiff.

erect to leaning, smooth except in inflorescence.

sheaths hirsute;

principal blades linear to lance-linear, 5–12 cm, hirsute-hispid-ciliate, surfaces strigose-hispid or glabrous.

all sheaths hispid-hirsute, sometimes also hirtellous;

principal blades linear, 8–20 cm, abaxially puberulent, hispid-hirsute, adaxially hispid-hirsute-ciliate, scabridulous.

in solitary terminal clusters or several terminal clusters, less often from proximal 1–2 nodes, principal involucral bract mostly exceeding compound or cluster.

in clusters of terminal spikelets or from 1–3 penultimate nodes, proximalmost involucral bract longest, exceeding inflorescence, distal 1–2 bracts shorter.

lance-ovoid to cylindric, 5–8(–12) mm, apex acute;

fertile scales oblong to obovate, 2.5–3 mm;

cusp excurved, nearly length of scale, scabridulous;

median ribs 3, strong.

ovoid to cylindric-lanceoloid, 1–2 cm, apex acute;

fertile scales 2.5–3.5 mm;

cusp excurved, more than 1/2 length of scale, scabrid;

ribs 3–5(–7).

perianth bristles extending at least to base of perianth blades, often near to tips, retrorsely barbellate;

perianth blades long-clawed, mostly ovate, base 3–5-ribbed, apex slenderly acuminate, incurved, awned;

anthers 1–3, 0.5–0.7 mm.

perianth bristles reaching base of perianth blades or beyond, retrorsely barbellate;

perianth blades narrowly to broadly ovate, uniformly compressed or distally tumid, 1 mm, base 3-ribbed, apex incurved, acuminate;

anthers 3, 1 mm.

stipe slender;

body angles wirelike, faces lustrous, deep brown to red-brown, 1 mm;

beak slender, stiff, tip papillate.

stipe shorter than perianth stipe;

body angles wirelike, pale, faces deep brown to chestnut brown, faintly cross-lined, 1 mm.

= 46.

= 46.