OregonFlora species comparison

4–40 cm × 0.2–0.5 mm.

sometimes sparsely orange-punctate at 10–15×;

distal blade rudimentary to much longer than sheath, often exceeding culm; to 20 cm × 0.2–1 mm.

involucral bract 1, usually erect, sometimes subtending flower or resembling enlarged floral scale, 2–6(23) mm.

2–5 × 1–2 mm;

proximal floral scales to 2 mm long; other floral scales 1.2–1.8 × 1–1.3 mm.

anthers 0.3–0.6 mm.

ellipsoid to obovoid, compressed-trigonous to thickly biconvex;

lateral angles usually prominent; dorsal angle prominent to obscure, 0.8–1 × 0.5–0.7 mm long; medium to dark brown or stramineous, distinctly papillose at 10–15× to obscurely papillose at 40×, often with thin whitish surface layer.

=30.