OregonFlora species comparison

subterete, 10–30 cm × 0.3–0.5 mm.

terete, 3–50(90) cm × 0.2–2 mm.

ovoid, 3–8 × 2–3 mm;

proximal scale clasping; entire, subproximal scale with flower; floral scales 8–30, 4–5 per mm of rachilla, 2–3 × 1.5 mm;

apex entire; acute, often keeled in distal part of spike.

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 3–6, often unequal; from rudimentary to 50% of achene length;

anthers 0.9–1.4 mm;

stigmas 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.

slightly to greatly compressed-trigonous, rarely thickly lenticular, 0.9–1.2 × 0.65–0.8 mm.

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

persistent, not splitting;

apex obtuse, rarely hardened, lacking a tooth.

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

flat to shallowly pyramidal; lower than wide, 0.1–0.3 × 0.4–0.65 mm.

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.