OregonFlora species comparison

subterete, 10–30 cm × 0.3–0.5 mm.

terete, 2–35 cm × 0.3–1 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.

ovoid, 2–8 × 2–4 mm; floral scales 25–100+, approximately 10 per mm of rachilla, 1.5–2 × 1 mm; midribs often keeled in distal part of spike;

apex rounded to subacute.

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

anthers 0.9–1.4 mm;

stigmas 3.

perianth bristles present, rarely absent; (5)6–7, exceeding tubercle;

stamens 2(3);

anthers 0.3 mm;

stigmas 2 or some 3.

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

biconvex or to 33% greatly compressed trigonous, 0.75–1 × 0.6–0.85 mm.

persistent, not splitting;

apex obtuse, rarely hardened, lacking a tooth.

persistent, apex of distal leaf sheath obtuse to acute; tooth to 0.2 mm.

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

deltoid, 0.3–0.5 × 0.3–0.5 mm, 60% to as high as wide, 33–67% as high and 50–75% as wide as achene.

=10.