Flora of North America species comparison

(20–)30–100 cm, 2.5–8 mm wide basally, 0.7–1.6 mm wide distally.

30–100 cm, 3–6 mm wide basally, 0.7–1.1 mm wide distally.

sheaths usually loose, proximally green-and-white-striped, not white spotted, with conspicuous transverse veins on back, fronts hyaline, sometimes transversely rugose and red dotted, thin, white or hyaline and fragile at mouth;

ligules 2–7 mm, shorter to longer than wide;

widest leaf blades (3–)4–8 mm wide.

proximal sheaths loose, longitudinally green-and-white-striped, green-and-white-mottled, with prominent cross veins on backs, fronts hyaline and transversely rugose;

ligules 3–8 mm, as long as wide;

widest leaf blades 5–10 mm wide.

with 5–15 spikes, 1–5 cm × 8–15 mm, occasionally compound, then somewhat larger;

proximal bracts to 3 cm;

spikes with 5–15 ascending to spreading perigynia;

proximal internodes shorter than to 1.5 times as long as proximal spikes.

with 6–15 spikes, 3–15 cm × 8–12 mm, occasionally compound and then somewhat larger;

proximal internodes usually 20+ mm, more than 2 times as long as proximal spikes;

proximal bracts to 2 cm;

spikes with up to 50 ascending to spreading perigynia.

pale green to pale brown, veinless or 3–7(–12)-veined abaxially, rarely veined adaxially, 3.5–5.5 × 2–3 mm, body somewhat spongy, base thickened, margins serrulate distally;

beak 0.6–1.6 mm, apical teeth 0.3–1 mm.

pale green, with wing 0.1–0.2 mm wide distally, veinless or weakly veined abaxially, 3.3–4.3 × 1.5–2.5 mm, margins serrulate distally;

beak 0.8–1.2 mm, apical teeth 0.2–0.4 mm.

circular to elliptic- circular, 1.8–2.1 × 1.6–2 mm.

suborbiculate, 1.7–2.2 × 1.5–1.8 mm.

scales hyaline or brown with green, 1–3-veined center, ovate, 2.6–4.4 × 1.3–2.4 mm, body shorter to slightly longer than perigynium, apex acuminate to short-awned.

scales hyaline with green midvein, ovate to subcircular, 1.8–2.5 × 1.1–1.8 mm, body 1/2 length of perigynium, apex obtuse to acuminate or short-awned.

1.5–3 mm.

0.7–1.3 mm.

= 46, 48.