Flora of North America species comparison

round or trigonous, filiform, wiry, angles proximal to spike blunt or sharp, 5–35 cm, shorter than or longer than leaves.

40–100 cm;

vegetative culms conspicuous, with spreading leaf blades evenly along stem.

basal leaf sheaths fibrillose when old;

blades yellow-green or bright green, involute-cylindric, quill-shaped, 6–25 cm, 0.3–0.7 mm wide near base.

sheaths adaxially green-veined to within 3 mm of collar, adaxially firm, summits usually brown tinged, U- or V-shaped, thick;

distal ligules to 2 mm;

blades 7–12 per fertile culm, 12–25 cm × 3–5 mm.

open at least proximally, brown, (4–)5–9 cm × 10–20 mm;

proximal internode (4–)5–15 mm; 2d internode (3–)5–11 mm;

proximal bracts scalelike.

7–30 × 3–7 mm, staminate portion 4–14 mm.

5–12, distant, distinct, lanceoloid, 12–28 × 3.5–7 mm, bases tapered, apex acute.

(2–)5–18, appressed to ascending, white to gold, obovate to orbiculate, 1.9–4.8 × 1.3–2 mm, body conspicuously hirsute or pubescent, at least distal 1/4 (occasionally only proximal to beak);

beak 0–0.8 mm, style base often conspicuously exserted from beak;

rachilla present.

appressed-erect, pale brown, conspicuously 5–7-veined abaxially, conspicuously 3–7-veined adaxially, lanceolate, flat to plano-convex, 6–9 × (1.5–) 2–2.5 mm, 0.3 mm thick, margin flat, including wing 0.2–0.4 mm wide;

beak tip flat, ciliate-serrulate, abaxial suture inconspicuous, distance from beak tip to achene 3.1–4.5 mm.

obovate to elliptic, 1.5–3.3 × 1.1–1.9 mm.

elongate-oblong, 2–2.7 × 0.8–0.9 mm, 0.3 mm thick.

pistillate scales pale red-brown with white or gold margins, broadly obovate, 2.3–4.5(–6.5) × 1.7–4 mm, shorter or longer than perigynia, apex obtuse to short-awned.

scales red-brown with broad, white margins, broadly obovate, apex obtuse.

± black.

scales white-hyaline or pale brown with pale brown midstripe, oblong-ovate, 4–5 mm, 1/2 length of and narrower than perigynia, apex acute.

= 80.