Flora of North America species comparison

erect to curved, leafy, obscurely trigonous to nearly terete, few ribbed, slender.

arching, slender, leafy.

exceeded by culm;

blades elongate linear, proximally flat, 2–3 mm wide, apex trigonous, subulate.

clusters 1 or 2–3, then widely spaced, narrowly turbinate to hemispheric, 1.5–2.5 cm wide; subtending leafy bracts often exceeded by distal cluster.

terminal and lateral, clusters 2–3, loosely turbinate, clusters, capillary pedunculate;

distal foliaceous bracts mostly exceeded by inflorescences.

pale brown to nearly white, ellipsoid, 3.5–5.5 mm, apex acute;

fertile scales elliptic, 3–3.5(–4) mm, apex acute or acuminate, midrib excurrent as mucro.

few per cluster, brown, broadly ovoid, 4 mm, apex acuminate;

fertile scales oblongovate, 3 mm, midrib forming small awn.

perianth bristles 10–12, slightly overtopping tubercle, retrorsely barbellate or rarely smooth, base often setose.

perianth bristles 6, exceeding tubercle tip, antrorsely barbellate.

1(–2) per spikelet, (2.3–)2.5–3 mm;

body pale brown with paler center, stipitateobovoid, lenticular, 1.5–1.8(–2) × 0.9–1.2 mm;

surfaces transversely striate, relatively smooth, rim narrow, flowing to tubercle base;

tubercle narrowly triangularsubulate, 0.5–1.2 mm.

mostly 2 per spikelet, 3 mm;

body pale yellowbrown, pyriform-obovoid, lenticular, 2 × 1.4 mm;

surfaces transversely wavyrugulose, vertically striatealveolate between ridges;

tubercle subulatetriangular, 1 mm.

leaves mostly overtopped by culm;

blades narrowly linear to filiform, proximally flat, 0.5–1.5 mm, apex tapering, trigonous.