Flora of North America species comparison

5–60 cm.

20–90 cm;

vegetative culms inconspicuous with few leaves clustered at apex.

basal and cauline;

proximal leaves reduced to sheaths;

distal leaves with blades 3–6 mm wide.

sheaths white-hyaline or green-veined, sometimes papillose, summits U-shaped, not distally expanded;

distal ligules 2.2–6 mm;

blades 3–4 per fertile culm, 11–25 cm × 1.7–4.2 mm.

spikes separate, elongate, 6–20 × 5–8 mm;

lateral spikes 1–3, pendent, long-pedunculate.

mostly dense, brown, 1.1–3 cm × 5–14 mm;

proximal internode 1–4 mm; 2d internode 1.4–3.4 mm;

proximal bracts scalelike, with bristle tips shorter than inflorescences.

3–10, usually overlapping, ovoid to globose, 4–10 × 3–7 mm, base rounded or truncate, apex rounded.

brown or purple-brown, veinless, ovate, 3–3.5 × 1.75–2 mm, papillose;

beak 0.3–0.4 mm, shallowly bidentate or truncate, sparsely papillose or smooth.

ascending to ascending-spreading, light to dark reddish brown, conspicuously 3+-veined abaxially, faintly or basally 1–3-veined adaxially, winged to base, ovate or elliptic, plano-convex, 2.5–3.8 × (1–)1.2–2 mm, 0.35–0.45 mm thick, 1.9–2.5 times as long as wide, margin flat, including wing 0.2–0.5 mm wide, 1b ciliate-serrulate at least distally;

beak reddish brown at tip, flat, ± ciliate-serrulate, abaxial suture with reddish brown-hyaline margin, distance from beak tip to achene 1.2–2.2 mm.

ovate or elliptic, 1–1.3 × 0.6–0.9 mm, 0.3–0.4 mm thick.

scales dark brown or black, margins occasionally narrowly hyaline, midvein seldom prominent, same color as the body, inconspicuous, broadly lanceolate, shorter than or equaling and as wide as perigynia, apex acute.

scales reddish brown, usually with green or whitish to brown midstripe, lanceolate, 2.5–3.5 mm, shorter and narrower than perigynia, apex acuminate or acute.

= 68, 70.