Flora of North America species comparison

trigonous, 20–50(–85) cm × 1–2(–4) mm, glabrous.

trigonous, 15–60 cm × 1–3 mm, glabrous.

3–6(–10), 10–40(–55) cm × 1.5–4(–5) mm, V- to inversely W-shaped.

2–6, flat to V-shaped, 6–30(–40) cm × 2–4 mm.

spike 1, densely oblong-ovoid often with small basal branches, 8–16 × 4–12(–16) mm;

rays 4–8(–11), 0.5–3.5(–8.5) cm;

bracts (3–)4–6(–10), ascending at (30–)45°, flat to broadly V-shaped, (4–)14–30(–55) cm × 1–5 mm, scabridulous along margins only;

rachilla deciduous, wings persistent, 0.2–0.3 mm wide.

spikes broadly ellipsoid, 5–45 × 10–30(–45) mm;

rays (2–)5–9, (0.3–)3–10 cm;

rachis 4–17 mm;

bracts 5–6, horizontal to ascending, V-shaped, 1.5–30 cm × 0.5–4 mm;

rachilla persistent, wings hyaline, 0.4–0.5 mm wide.

40–120, oblong-lanceoloid, subterete, 2.2–4(–4.5) × 0.8–1.6 mm;

distal spikelet spreading or ascending;

floral scales persistent, 2–5, appressed, brown to stramineous, or fuscous and lustrous, medially greenish and 1(–3)-ribbed, laterally greenish to yellowish white and 3–4-ribbed, oblong to oblong-lanceolate, 1.8–2.5 × 1–1.5 mm, subcoriacous.

5–30, pale greenish white or stramineous, compressed, linear-lanceoloid, 7–35 × (1.2–)1.4–2 mm;

floral scales deciduous, 6–34, spreading or appressed, laterally greenish white, often reddish or brown speckled, medially green, laterally 3–5-ribbed, medially 3-ribbed, elliptic, (2.2–)3–4(–4.4) × (1.2–)1.8–2.2 mm, apex acute.

anthers 0.3–0.5 mm;

styles 0.5–0.8 mm;

stigmas 0.6–0.9 mm.

anthers 0.6 mm;

styles 0.6–1.2 mm;

stigmas 1–1.4(–1.7) mm.

brown, oblong-ellipsoid, 1.2–1.7 × 0.5–0.6 mm, base cuneate, apex subacute, surfaces papillose.

reddish brown to dark brown, stipitate, narrowly ellipsoid, 1.4–2 × 0.6–0.9 mm, apex apiculate, surfaces puncticulate.