Flora of North America species comparison

0.2–10 cm, 0.6–1.2 mm in diam.

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

arising singly or in loose tufts of 2–6(–12), 10–40(–60) cm, apically slightly scabrous.

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.

proximal 1–4 reduced to bladeless or nearly bladeless sheaths;

foliage leaves 1–2(–3) per culm;

ligules about as wide as long;

blades mostly 1–3 (proximal blade) or 5–13 (distal) cm × 0.5–1.6 mm.

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.

consisting of slender terminal cone of (1–)2–4 staminate flowers and (1–)2–6(–7) pistillate flowers, 3–10 (often 5–8) × 2–8 (immature fruit) or to 17 (mature fruit) 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.

light green, becoming straw colored or pale brown, lance-subulate to narrowly elongate-oblong, (5–)5.9–7.8 × 0.7–1.1 mm, long-tapering;

beak indistinct;

rachilla vestigial.

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

2–2.4 × 0.8–1 mm;

style exserted 0.2–1.3 mm beyond orifice of beak.

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.

scales 3.7–5.9 mm, wider than and 2/3 length of perigynia.

1.5–2.5 mm.

scales closely appressed.

= ca. 74, 76.