Flora of North America species comparison

erect, not stiff, 15–90 cm.

(11–)15–55 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.

sheath summits U-shaped or rounded, occasionally prolonged to 2.5 mm beyond collar;

distal ligules 0.5–2.5 mm;

blades 3–5 per fertile culm, 5–18 cm × (1.1–)1.5–2.6(–3.1) mm.

2–15 cm × 5–10 mm;

proximal bracts shorter than to exceeding spikes;

distal bracts usually scalelike.

dense or loosely aggregated, gold to medium brown or occasionally dark brown, 1.1–2.4 cm × 6.3–14 mm;

proximal internode (1.5–)2.5–9.5 mm; 2d internode 1–3 mm;

proximal bracts bristlelike.

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.

4–9, individually distinct or indistinct, usually ovoid, (4.5–)6–10 × (2–)4–6 mm, base usually acute, apex rounded to acute.

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, straw colored to light brown with green distal margins, conspicuously 0–5-veined abaxially, conspicuously 0–4-veined adaxially, at most 1 vein reaching top of achene, lance-ovate to ovate, plano-convex or flat, usually constricted near base when dry, 2.1–3.6 × 0.8–1.4 mm, 0.4–0.5 mm thick, margin flat, 0.05–0.15(–0.2) mm wide, entire, not usually extending to distal body and beak;

beak gold to dark brown at tip, cylindric, unwinged, abaxial suture conspicuously white-margined, or occasionally inconspicuous, distance from beak tip to achene 1–1.6 mm, entire for at least 0.4 mm.

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

elliptic to quadrate, 1.1–1.4 × 0.7–1 mm, 0.3–0.5 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 gold to dark brown, with whitish to green midstripe, ovate, 1.9–3.5 mm, shorter or slightly longer than perigynia and ± equal in width, margin white, 0–0.2(–0.4) mm wide, apex obtuse to acute.

= 56.

= 82.