Flora of North America species comparison

14–89(–101) cm × 0.3–1.1 mm wide, smooth or papillose.

25–50 cm.

ligule on distal leaf 0.9–2.2 mm, as long as wide;

blades 0.6–4.2 mm wide, widest blade 2.4–4.2 mm wide.

basal and cauline;

proximal leaves reduced to sheaths;

distal leaves with blades 2–5 mm wide.

12–56 mm;

proximal internode 6–34 mm;

proximal bracts 6–49 mm, awn 7–46 mm;

spikes (2–)3–5, longest ones 2–5, usually gynecandrous;

proximal spikes with 1–2 staminate and (5–)7–12 pistillate flowers, 5.2–11(–13) × (2.1–)3.7–6.9 mm;

terminal spikes usually with 1–3(–5) staminate and (7–)9–13(–16) pistillate flowers, 6.8–13 × 3.8–8.1 mm.

spikes separate, oblong or elongate, 8–20 × 3.5–5 mm;

lateral spikes 2–4(–9);

proximal spikes spreading or pendent, long-pedunculate;

distal spikes approximate, erect or spreading, short-pedunculate.

erect to ascending, green to pale brown, 0–5-veined abaxially, usually veinless adaxially, narrowly ovate, 4–4.9(–5.2) × 1.3–1.5(–1.6) mm, 2.9–3.8 times as long as wide, apex gradually tapering;

beak 1.4–2.1 mm, 0.32–0.4 times as long as perigynia, margins serrulate, apex entire or bidentulate, teeth to 0.2 mm, 0–0.05 times as long as perigynia.

yellow-green, green, or purple-black, veined or veinless, ovate, 3.5–5 × 1.75–2 mm, smooth;

beak 0.4–0.5 mm, entire or deeply bidentate, smooth.

1.8–2.2 × 1.2–1.5 mm wide, 1.3–1.8 times as long as wide.

scales with colorless or stramineous margins, 3–4.5 × 1.6–2.2 mm, body 2.8–4.2 mm, apex acuminate to short-awned, awn to 0.6 mm.

scales brown or black, midvein prominent, lighter colored than body, conspicuous, lanceolate, shorter or longer than and as broad as perigynia, apex acute or mucronate.

scales with colorless or stramineous margins, 3–5.3 × 1.2–1.6 mm, apex acute to acuminate or occasionally short-awned to 0.3 mm.

(1.8–)1.9–2.2 mm.

1.9–2 mm.