Flora of North America species comparison

erect, not stiff, 15–90 cm.

51–97 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 green-veined nearly to collar, ± white-hyaline triangular area to 6 mm proximal to collar, firm, summits tinged brown, usually rounded, prolonged to 1.5–6 mm beyond collar;

distal ligules (3–)4–8 mm;

blades 3–4(–5) per fertile culm, 15–25(–45) cm × (2.5–)3–4(–5) mm.

2–15 cm × 5–10 mm;

proximal bracts shorter than to exceeding spikes;

distal bracts usually scalelike.

proximal branches often bearing several spikes, green to pale brown, 3.5–8 cm × 10–13 mm;

proximal internode 5–12 mm; 2d internode 4–11 mm;

proximal bracts 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.

(6–)8–12, distant, distinct, broadly ovoid, 11–18 × 6–8 mm, base attenuate, apex 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.

ascending to ascending-spreading, white or gold conspicuously (1–)3–8-veined abaxially, conspicuously 1–7-veined adaxially, ovate to broadly ovate, flat or plano-convex, 3.2–4.2 × 1.7–2.1 mm, 0.4–0.5 mm thick, margin flat, including wing 0.3–0.5(–0.6) mm wide, ciliate-serrulate at least distally;

beak white or gold at tip, flat, ± ciliate-serrulate, abaxial suture inconspicuous or with conspicuous white margin, distance from beak tip to achene (1.5–)1.8–2.4 mm.

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

ovate to obovate, (1.3–)1.5–1.8 × 0.9–1.2 mm, 0.4–0.5 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 white-hyaline or pale gold, with green, gold, or brown midstripe, lanceolate to ovate, 2.7–3.5 mm, somewhat shorter and narrower than perigynia, apex obtuse or acute.

= 56.

= 66.