Flora of North America species comparison

erect, not stiff, 15–90 cm.

loosely tufted or solitary, ascending or lax, 10–32 cm × 0.8–1.6 mm.

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.

basal sheaths light brown to brown;

sheaths green or yellow-green, 2–26 mm;

blades ascending, green or yellow-green, midrib well developed abaxially, 2 lateral veins well developed adaxially, flat, 18–44 cm × 12–14 mm, blades of owerwintering leaves smooth.

2–15 cm × 5–10 mm;

proximal bracts shorter than to exceeding spikes;

distal bracts usually scalelike.

peduncles of proximal spike to 6 cm, longer lateral ones 4.6–14 times as long as spikes they subtend, arising in proximal 1/3 of culm, distal lateral spikes not exserted;

peduncle of terminal spike 0–2.8 cm;

bracts 8–21 × 1–4 mm, blade of distal lateral spike linear, narrower than spikes, widest bract blade of distalmost lateral spike 0.5–3.4 mm wide.

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(–4) per culm;

lateral spikes 7–20 × 2.5–4.5 mm;

terminal spike 11–35 × 1.8–3 mm.

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.

6–18 per spike, closely to loosely overlapping, ratio of longer lateral spike length to perigynia number 0.8–2.4, aggregated, spreading, finely, conspicuously (22–)25–32-veined, narrowly elongate, 3–5.2 × 1.2–1.6 mm;

beak excurved, 0.4–1.7 mm.

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

elongate-obovoid, 2.2–3 × 1.2–1.6 mm.

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 2–2.5 × 0.8–1.2 mm, apex acute or mucronate.

scales 3.2–4.2 × 1–1.2 mm, margins hyaline or brown tinged, apex acute.

3.5–4 mm.

= 56.