Flora of North America species comparison

10–90(–135) cm.

to 125 cm.

3–6 per culm;

sheaths tight, inner band hyaline, 1.8–2.5 cm, apex concave, glabrous;

ligules 0.6–2.5(–4.5) mm, rounded to ± acute;

blades plicate, 5–40 cm × 0.7–3.3(–3.8) mm, widest leaf 1–3.3(–3.8) mm wide.

sheaths glaucous, fronts indistinctly veined, veins not persisting, apex thin, concave;

blades 120 cm × 10 mm, glabrous or sparsely scabrous on margins and abaxial surface.

0.7–7.8 cm;

spikes (2–)3–8;

lateral spikes pistillate often with few staminate flowers proximally, 3–15.5 mm, sessile, staminate portion 7-flowered, to 8.2 mm, pistillate portion 3–32-flowered, 2.5–11 mm;

basal 2 spikes 1.7–42 mm apart;

terminal spike gynecandrous, 5–24 mm, staminate portion 2–17-flowered, 2–16.5 × 0.9–2 mm, pistillate portion 4–26-flowered, 2.6–9 × 4.9–9.1 mm.

with 5–7 spikes, 30 cm;

peduncle of terminal spike to 3.5–6 cm;

proximal bracts equaling or exceeding inflorescence, 3–5 mm wide;

lateral spikes erect, 2–6 cm × 7 mm;

terminal staminate spikelets usually absent.

spreading to reflexed, castaneous to dark brown, 2–14-veined abaxially, 0–12-veined adaxially over achene, lanceolate to ovate, (2.65–)2.9–4.75 × 0.8–2.1 mm, (1.7–)1.8–3.2(–3.6) times as long as wide;

beak (0.85–)0.95–2 mm, (0.4–)0.45–0.86 length of body, serrulate, teeth (0–)0.15–0.5 mm.

ascending, red-brown or whitish, angles veined, faces inconspicuously 3–8-veined, stipitate, widely elliptic or obovate, 3.2–4 × 2.5–3 mm, base rounded, apex obtuse to somewhat tapered, densely papillose with rounded white papillae, sometimes strongly glaucous;

stipe to 0.2 mm;

beak to 0.2 mm, entire.

ovate-lanceolate to rhombic-ovate, 1.3–2.1 × 0.8–1.55 mm.

rhomboid, 2.5–2.7 × 2.5–2.7 mm, base not conspicuously broadened.

scales ovate, (1.4–)2.1–3.1 × 0.7–2.3 mm, apex acute to sometimes obtuse.

scales shorter and narrower than perigynia, apex retuse, awn to 2 mm.

scales ovate-lanceolate to ovate, 1.3–3.8 × 0.8–1.7 mm, base clavate, apex acute.

0.8–1.6(–2) mm.

= 58.