Flora of North America species comparison

arching, leafy, droopingtipped, ± terete, ribbed, slender.

erect or curved, leafy, filiform, angularly fewribbed.

ascending-excurved, overtopped by culm;

blades filiform, involute, apex setaceous.

clusters of spikelets 3–6, progressively wider-spaced proximally, narrow, elongate; leafy bracts slender, mostly exceeding clusters.

spikelet clusters 1–2(–3), often sparse, ellipsoid or narrowly turbinate, less than 1 cm wide; subtending foliaceous bracts exceeding compounds.

redbrown, lanceoloid, 5–7 mm, apex acuminate;

fertile scales narrowly ovate, 4–5 mm, apex acuminate, midrib included or shortexcurrent.

erect or ascending, pale redbrown to brown, fusiform, 6–7 mm;

fertile scales elliptic, 4 mm, apex rounded or acute, midrib shortexcurrent or not.

perianth bristles 6, exceeding tubercle, antrorsely barbellate.

perianth bristles 6, overtopping tubercle base, mostly retrorsely barbellate, sometimes smooth [forma laeviseta (E.

(1–)2–3(–4) per spikelet, 3–3.2 mm;

body brown, narrowly oblong-ellipsoid, flattened, 2 × 0.8–1 mm;

surface strongly transversely wavyrugose, vertically finely striate between ridges;

tubercle compressed, narrowly triangular-subulate, 1 mm.

1–4(–5) per spikelet, 2.5–3 mm;

body pale brown, slender stipitate, ellipsoid, lenticular, 1.5–2 × 0.8–1 mm;

surfaces longitudinally minutely striate, obscurely transversely lowrugose, dotted;

tubercle narrowly triangularsubulate, flattened, 0.8–1.7 mm.

leaves exceeded by culm;

blades spreading to ascending, narrowly linear, proximally flat, 2–3.5 mm wide, apex trigonous, tapering.

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) Fernald].