Flora of North America species comparison

erect, not stiff, 15–90 cm.

25–35 cm.

sheaths pale brown abaxially, inner band thin, hyaline, sometimes slightly red tinged, concave at summit;

ligules slightly longer than wide;

blades pale green to gray-green flat, 10–20(–30) cm × (1.5–)2–4 mm, subequal to shorter than culms, not stiff.

sheaths adaxially white-hyaline, summits U-shaped or rounded, sometimes prolonged beyond collar and rounded;

distal ligules 1–3 mm;

blades (2–)3–5 per fertile culm, 4–15 cm × 2–3 mm.

2–15 cm × 5–10 mm;

proximal bracts shorter than to exceeding spikes;

distal bracts usually scalelike.

open, orange-brown or greenish, 2.5–4 cm × 13–15 mm;

proximal internode 6–12 mm; 2d internode 2–6 mm;

proximal bracts scalelike or bristlelike, shorter than inflorescences.

4–8, gynecandrous, proximal ± remote, distal spikes approximate, sometimes flexuous, containing (5–)10–20(–30) perigynia suborbicular to oblong, 3–12 × 3–5 mm;

terminal spike staminate for less than 1/2 of length, often clavate due to more conspicuous staminate part.

3–7, distant, distinct, oblanceloid to obovoid, 14–21 × 7–10 mm, base attenuate, apex acute to rounded.

appressed-ascending, gray-green, becoming yellowish brown, obscurely many-veined, elliptic-ovate, 1.8–3 × 1.2–1.7 mm, widest near middle, membranous;

beak abaxial suture inconspicuous, small marginal teeth.

appressed to appressed-ascending, greenish to straw colored, conspicuously 8–16-veined abaxially, conspicuously, shortly 4–7-veined adaxially, at least 3 adaxial veins longer than achene, lanceolate to ovate, plano-convex, 6.8–7.5 × 2–2.4 mm, (0.5–)0.6–0.8 mm thick, margin flat, including wing 0.4–0.5 mm wide, ciliate-serrulate at least distally;

beak red-brown, sometimes white-hyaline at tip, cylindric, unwinged, entire for 0.5–0.9 mm, abaxial suture usually inconspicuous, distance from beak tip to achene 3.5–4.2 mm.

pale brown, oblong-obovate, 1.25–1.5 × 1–1.25 mm, dull to slightly glossy.

ovate or obovate, 2.1–2.5 × 1.2–1.5 mm, 0.5–0.6 mm thick.

scales hyaline with green, 3-veined center when young, usually brownish tinged in age, broadly ovate, subequal to, not concealing perigynia, apex obtuse to acutish.

scales orange- or red-brown to coppery, with white or green midstripe, lanceolate to ovate, 4.8–5.5 mm, 2/3–3/4 length of and narrower than perigynia, margin white-hyaline, 0–0.2(–0.4) mm wide, apex obtuse.

scales with white-hyaline margin 0–0.2(–0.4) mm wide.

= 56.