Flora of North America species comparison

acutely angled, 45–140 cm, scabrous.

20–100 cm;

vegetative culms with few leaves clustered at apex.

basal sheaths red-brown or brown;

sheaths of proximal leaves bladeless, scabrous, fronts red-brown to copper-brown, spots absent, indistinctly ladder-fibrillose;

blades 12–55 cm × 4–10.5 mm.

sheath summits U-shaped;

distal ligules 2.3–4.8 mm;

blades 3–5 per fertile culm, 10–32 cm × 1.4–3(–3.5) mm.

peduncle of proximal spike 0.6–6.1 cm;

proximal bract longer than inflorescence, 1.9–9.5 mm wide.

arching or nodding, dense or open, green, yellow, or brown at maturity, 1.5–6 cm × 5–20 mm;

proximal internode 2–12 mm; 2d internode 2–13 mm;

proximal bracts scalelike, with bristle tip.

2–5 pistillate, 1–3 staminate, pendent;

proximal pistillate spike 2.4–10.4 cm × 3–8.4 mm, base cuneate to acuminate.

3–10, distinct, ellipsoid, 7–16 × 3–9(–13) mm, base acute to short-attenuate, apex acute to rounded.

ascending, pale brown, 0–5-veined abaxially, scarcely inflated, loosely enclosing achenes, ovoid to ellipsoid, 1.9–4.2 × 1.1–2.3 mm, dull, apex acute or obtuse, glabrous;

beak 0.1–0.3 mm.

ascending or rarely widely spreading, golden brown, conspicuously 5-veined on each face or fewer adaxially, winged to base, lanceolate, flat except over achene, 4.2–6.8 × 1.2–2 mm, length at least 3 times width, 0.35–0.55 mm thick, margin flat, including wing 0.2–0.6 mm wide;

beak pale to golden-brown at tip, flattish, ciliate-serrulate, abaxial suture with white or golden brown hyaline margin, distance from beak tip to achene 2.2–4.8 mm.

variously constricted.

ovate or elliptic, 1.3–1.7 × 0.7–0.9 mm, 0.3–0.4 mm thick.

scales pale brown to copper-brown, 3.1–8.2 mm (including awn), midvein reaching apex, apex of body acuminate or, rarely, truncate, awned.

scales hyaline brown, occasionally with green or gold midstripe, lanceolate, 3.4–4 mm, shorter and narrower than perigynia, apex acuminate.

= 66, 68.