Flora of North America species comparison

basally cormlike, trigonous, (15–)30–100 cm × 0.5–3.5 mm, glabrous.

trigonous, 50–100 cm × 5–8 mm, glabrous.

flat to V-shaped, 10–65 cm × 3–9 mm, adaxial surface, margins minutely scabridulous.

3–6, V-shaped, 20–50 cm × 5–8(–10) mm.

spikes densely globose to globose-ovoid, 8–17 mm wide;

rays 3–12, 2–12 cm, scaberous adaxially especially distally;

rachis 4–8 mm;

bracts (3–)4–7, ascending at 30(–45)°, flat, 5–35 cm × 2–9 mm;

rachilla persistent, wings 0.5–0.7 mm wide.

spikes not appearing lateral, rays 5–8, 2–7(–12) cm;

bracts 3–4, ± horizontal to ascending at 45°, V-shaped, 5–25 cm × 1.5–8 mm;

spikes 1–4, ovoid, 2–4 × 2–3 cm;

rachis 1–2.7 cm, smooth or hispidulous;

rachilla persistent, wingless or with hyaline wings scarcely 0.1 mm wide.

50–100, oblong-lanceoloid, ± terete-quadrangular, (3.5–)4–7 × 1–1.4 mm;

distal spikelet spreading or ascending;

floral scales persistent, 3–5, appressed, stramineous to brownish, 4-ribbed laterally, oblong-elliptic, 3.5–4.5 × 1–1.8 mm, membranous, apex entire or emarginate with mucro to 0.3 mm.

7–14, flattened, lanceoloid, 10–20 × 2–2.5 mm;

floral scales 10–30, laterally dark brown to reddish brown, medially greenish, laterally 5–9-ribbed, ovate-deltate;

anthers 3, 0.5 mm;

styles 0.5 mm;

stigmas 1.2–1.6 mm.

anthers 0.4–0.8 mm;

styles 0.5–0.6 mm;

stigmas 1 mm.

brown, ± stipitate, oblong, (1.5–)1.8–2.3 × 0.5–0.6(–0.7) mm (1/2 length of floral scales), apex obtuse, surfaces puncticulate.

brown, sessile, ellipsoid, 1.4–1.6 × 1.4–1.5 mm, apex obtuse, apiculate.