Flora of North America species comparison

yellow-brown to dark brown at base, 15–60 cm.

23–56 cm.

sheaths hispidulous;

blades green, widest blades (3–)3.4–5.4(–6.5) mm wide, glabrous abaxially or sparsely hispidulous on midrib.

sheath adaxially white-hyaline, summits U-shaped to rounded, often prolonged to 6 mm beyond collar;

distal ligules 0.8–2.5(–4) mm;

blades (2–)3–4 per fertile culm, 6–30 cm × 1.7–3.6 mm.

0.19–0.48 of culm height;

peduncles of lateral spikes smooth or barely scaberulous;

peduncles of terminal spikes (4.2–)7.5–37(–43) mm, much exceeding lateral spikes;

proximal bract with sheath tight, abaxially scabrous, sheath front apex convex, elongated (0.6–)1.6–4.9(–6.6) mm beyond apex;

ligules 3.3–5 mm;

distal bract usually much exceeding terminal spike.

dense or open, green and brown, gold, or brown, 1.4–3 cm × (5–)8–15 mm, stiff, appearing coarse-textured;

proximal internode 3–7 mm; 2d internode 1–4 mm;

proximal bracts usually aristate, shorter than inflorescences.

3–5, separate or distal 2–4 spikes overlapping;

lateral spikes pistillate, with 2–7 perigynia, 6–29 × 3.8–6.8 mm, ratio of spike length (in mm) to flower number = 3.5–4.8;

longest terminal spikes 14–34(–42) × 1.3–3(–3.5) mm.

3–7, distant to loosely aggregated, usually individually distinct, narrowly to broadly ovoid, 7–10 × (3–)4.5–7.5 mm, base rounded or attenuate, apex usually acute.

distichously imbricate, 52–59-veined, unwrinkled, obovoid or narrowly obovoid, obtusely triangular in cross section, (4.5–)4.6–5.6(–6.2) × 1.9–2.2(–2.3) mm, (2.1–)2.3–2.8(–3) times as long as wide, dull, base gradually tapered, apex abruptly contracted;

beak excurved, (0.5–)0.8–1.3 mm.

appressed-ascending to ascending-spreading, green or gold, usually green toward beak, contrasting in color with pistillate scales, conspicuously 0–7-veined abaxially, conspicuously 0(–5)-veined adaxially, thin, ovate to broadly ovate, plano-convex or, more often, biconvex, (3.3–)3.5–4.3 × (1.3–)1.5–2 mm, 0.5–0.6(–0.8) mm thick, 2.1–2.7 times as long as wide, margin flat, including wing 0.2–0.4 mm wide, ciliate-serrulate at least on distal body, without metallic sheen;

beak gold, gold-brown, red-brown, or brown at tip, flat, ± ciliate-serrulate or cylindric, unwinged, ± entire for 0.6 mm, abaxial suture usually inconspicuous, distance from beak tip to achene 1–2.4 mm.

obovoid-ellipsoid, 3.2–3.9(–4.2) × (1.6–)1.8–2.1 mm, tightly enveloped by perigynia;

stipe bent 45–70°, 0.4–0.6 mm;

beak bent more than 90°, 0.3–0.5 mm.

broadly oblong, ovate, broadly elliptic, or quadrate, 1.5–2 × 1–1.5 mm, 0.4–0.7 mm thick.

scales (4.1–)5.6–9.4(–11.6) × 1.6–2.6(–3.3) mm, margins whitish, denticulate, apex with awn 1.1–6.8 mm.

scales white, gold, red-brown, or chestnut-brown, usually with pale to green midstripe, ovate to broadly ovate, 2.8–3.7 mm, shorter or longer and narrower than perigynia, margin occasionally white, 0.1–0.2(–0.5) mm wide, apex usually acute to acuminate.

scales 5.2–6.9 × 1.5–1.7 mm.

3.4–4.2 mm.

= 80.