OregonFlora species comparison

terete, 2–9 cm × 0.2–0.5 mm.

subterete, 10–30 cm × 0.3–0.5 mm.

2–4 × 1–2 mm;

proximal scale 50% or more of spike length; floral scales 6–10 per spike, 1.4–2.7 mm;

apex rounded to subacute.

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.

perianth bristles 6, usually equaling achene to slightly exceeding tubercle, sometimes unequal and some 50% of achene; very rarely rudimentary;

anthers 0.7–1.2 mm;

stigmas (2)3.

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

anthers 0.9–1.4 mm;

stigmas 3.

thickly trigonous, 0.9–1.2 × 0.55–0.75 mm.

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

often disintegrating, thinly membranous;

apex rounded.

persistent, not splitting;

apex obtuse, rarely hardened, lacking a tooth.

0.1–0.2 × 0.15 mm.

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