OregonFlora species comparison

5–40(95) cm.

3–20(30) cm × 1.5– 3 mm.

clusters densely head-like; ovoid to hemispheric, 7–16(20) mm diameter;

rays (0)1–2, 0.3–4.5 cm;

inflorescence bracts 2–3; horizontal to reflexed downward.

(3)5–25(60), linear to oblong-linear, compressed; (3)5–9 × 1.8–2.3 mm; floral scales 4–18, closely imbricate; ovate to orbiculate, 1.5–2.1 × 1.4–2.2 mm; chestnut brown; black, or brown, medially green or greenish brown, laterally ribless, medially 2(3)-ribbed, distinctly 2-keeled basally;

apex obtuse.

anthers 0.6–0.8 mm;

styles 0.4–0.6 mm;

stigmas 0.7–2.1 mm.

ellipsoid, 1.2–1.4 × 0.6–0.8 mm, with network of ridges forming isodiametric or square cells.