Flora of North America species comparison

erect, not stiff, 15–90 cm.

yellow-brown at base, 10–50 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 glabrous;

blades glaucous, widest blades (5.1–)5.7–10.8 mm wide, smooth abaxially or sparsely antrorsely scaberulous on main veins.

2–15 cm × 5–10 mm;

proximal bracts shorter than to exceeding spikes;

distal bracts usually scalelike.

0.56–1 of culm height;

peduncles of lateral smooth;

peduncles of terminal spikes (0.5–)1.6–15(–31) mm, barely to much exceeding lateral spikes;

proximal bract sheath loose, abaxially glabrous, sheath front apex truncate;

ligules 5.2–10 mm;

distal bract slightly shorter than to much exceeding terminal spike.

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.

3–6, distal 2–4 overlapping;

lateral spikes pistillate, longest ones with (14–)19–45(–65) perigynia, 9–32(–41) × 4.1–6.5(–7.3) mm, ratio of spike length (in mm) to flower number = (0.56–)0.67–1.1(–1.3);

terminal spikes 7–35 × (1.3–)1.5–3(–3.6) 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.

spirally imbricate, 43–54-veined, unwrinkled, oblong-ovoid, obtusely triangular in cross section, 3.2–4(–4.1) × 1.5–2.5 mm, (1.5–)1.8–2.3(–2.5) times as long as wide, dull, base very gradually tapered, apex gradually tapered;

beak absent or straight, 0–0.3 mm.

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

obovoid, 2.4–3 × 1.3–1.6(–1.7) mm, 0.5–0.63 times as long as perigynia, loosely enveloped by perigynia;

stipe straight 0.05–0.3(–0.4) mm;

beak bent (0–)30–90°, 0.2–0.4 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 (1.6–)2–3.2(–3.7) × 1.5–2.2(–2.5) mm, margins whitish, entire, apex awnless or with awn to 1(–1.5) mm.

scales 4.3–5.2 × 1–1.8 mm.

1.8–3.6 mm.

= 56.