OregonFlora species comparison

terete, 2–40 cm × 0.5–1.5(2) mm.

terete 10–50 cm × 0.3–2 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.

ovoid, 3–8 × 2–2.5 mm;

apex acute;

proximal scale amplexicaul, subproximal scale empty or with flower; floral scales 10–20, 3–3.5 × 1.5 mm;

apex acute.

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 6, mostly equaling or exceeding tubercle; (0.5)1–2.2 mm;

anthers 1.2–1.5 mm;

stigmas 3.

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

nearly equilaterally- to greatly compressed-trigonous, 1–1.3 × 0.75–0.9 mm; neck absent or short.

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

persistent, lacking a tooth.

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.

well developed; pyramidal; as wide as high to much wider than high, 0.2–0.6 × 0.4–0.7 mm.