Flora of North America species comparison

(20–)30–100 cm, 1.5–3.5 mm wide basally, 0.7–1.2 mm wide distally.

7–55 cm, scabrous distally;

bases (remnants of old leaves) fibrous.

sheaths usually loose, proximal green-and-white-striped and green-and-white-mottled, with conspicous transverse veins on back, fronts white to hyaline, sometimes red dotted and transversely rugose, yellow or brown and thickened at mouth;

ligules 1–4.5 mm, shorter than to as long as wide;

widest leaf blades 3.5–5 mm wide.

blades pale to dark green, 0.7–3.6 mm wide, herbaceous, papillose to scabrous abaxially, papillose to scabrous adaxially, blades of distal cauline leaves poorly developed.

with 5–10 spikes, (1.5–)2–5 cm × 8–13 mm;

proximal internodes shorter than to as long as proximal spikes;

proximal bracts to 3 cm;

spikes with 5–15 ascending to spreading perigynia.

with both staminate and pistillate spikes;

peduncles of staminate spikes 0.7–13 mm;

proximal nonbasal bracts leaflike, shorter than inflorescences.

proximal pistillate spikes 1–3 (basal spikes 0);

cauline spikes overlapping or somewhat separated, with (2–)3–13 perigynia; staminate spikes 8–22.5 × 1.4–4.6 mm.

pale green to pale brown, veinless or weakly 2–5-veined abaxially, 3.4–4.6 × 1.9–2.8 mm, body somewhat spongy, thickened at base, margins serrulate distally;

beak 0.7–1.4 mm, apical teeth 0.3–1 mm.

yellowish green to pale olive, veinless, obovoid, 2.7–4.6 × 1.2–1.7 mm, as long as wide;

beak straight, pale green to olive, occasionally with reddish brown tinge near apex, 0.9–1.6 mm, weakly ciliate-serrulate, apical teeth 0.1–0.6 mm.

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

dark brown, obovoid to globose, obtusely trigonous in cross section, 1.3–2.2 × 0.9–1.6 mm.

scales hyaline or pale brown with green, 1–3-veined center, ovate, 2.2–3.5 × 1.2–1.8 mm, body 2/3 as long to almost length of perigynia, apex acuminate to short-awned.

1.5–2.5 mm.

1.9–4.6 mm.

pistillate scales pale or usually dark reddish brown, with narrow white margins, ovate to lanceolate, 2.7–4.3 × 0.8–2.4 mm, apex acute to long-acuminate; staminate scales obovate to lanceolate, 3.7–6.1 × 1–1.4 mm, obtuse to acute or acuminate.

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