OregonFlora species comparison

terete, 2–40 cm × 0.5–1.5(2) mm.

terete, 3–50(90) cm × 0.2–2 mm.

lanceoloid to subcylindric, 5–10(20) × 2–3(4) mm;

proximal scale empty, encircling approximately 67% of culm; floral scales 25–100(200), 8–12 per mm of rachilla, 2(2.5) × 1–1.3 mm;

apex narrowly rounded to subacute.

usually broadly ovoid; (2)5–13 × (2)3–4 mm; floral scales 15–150+, 8–20 per mm of rachilla, 1.5–2.5 × 1–1.5 mm;

apex broadly rounded.

perianth bristles present or often absent; (0)5–8; about as long as the achenes;

anthers 0.3–0.7(1) mm;

stigmas 2–3.

perianth bristles (5)6–7, rarely 0, slightly to usually greatly exceeding tubercle;

stamens (2)3;

anthers 0.3–0.6 mm;

stigmas usually 3 and 2 in the same spike.

biconvex or to 33% greatly compressed trigonous, 0.9–1.1(1.5) × 0.7– 1.1 mm.

biconvex or to 33% greatly compressed trigonous, 0.9–1.2(1.3) × 0.7–0.9 mm.

persistent, apex of distal leaf sheath obtuse to acute, with tooth to 0.3 mm.

persistent, apex of distal leaf sheath obtuse to acute; tooth to 0.3 mm.

depressed, subdeltoid, 0.1–0.3(0.4) × 0.6–0.9(1) mm, 10–40% as high as wide, 25% or less as high as achene, 90% as wide as achene.

deltoid 0.35–0.5 × (0.4)0.5–0.8 mm, 33–50% as high as wide, 33–50% as high and 67–90% as wide as achene.

=10.