OregonFlora species comparison

1–15, trigonous, 7–30 cm × 1.2–2.5 mm; soft (flattened in pressing).

roundly trigonous, 3–25(30) cm × 0.3–1.4 mm.

(2)7–22 cm × 2.2–4 mm.

1–8 cm × 1–2 mm.

clusters head-like; dense, 7–17(35) mm wide;

rays (0)1–5, 2–32 mm; longest inflorescence bract erect or nearly so, appearing as continuation of culm; other bracts horizontal to ascending.

cluster head-like, 1, loosely ovoid, compressed, 7–14 × 9–14 mm;

rays 1–4; to 2(3) cm;

inflorescence bracts 2–3; horizontal to ascending at 45(75)°.

30–120, oblong-ellipsoid, compressed; (2)3–5(6) × 0.8–1.2 mm; greenish brown to purplish brown; floral scales (6)12–20(30), obovate to orbiculate, 0.6–0.8 × 0.6–0.8 mm, stramineous to deep purple with clear margins; mid-stripe greenish, stramineous, or purplish;

lateral ribs 0; medial ribs 3;

apex mucronulate.

3–5(8), flattened, oblong to oblong-lanceoloid, 8–18 × 2–2.6(3) mm; floral scales (6)10–26(32), closely overlapping, 1.9–2.7 × 1.8–2.3 mm, oblong to ovate; light to dark brown, with light brown mid-stripe;

lateral ribs 0; medial ribs 2–3, 2-keeled;

apex obtuse.

anthers 0.1 mm;

styles 0.1 mm;

stigmas 0.1–0.3 mm.

anthers 0.4–0.5 mm;

styles 0.6–1 mm;

stigmas 1–1.5 mm.

obovoid-ellipsoid, 0.6–0.8 × 0.3–0.4 mm (as long as subtending scale);

base cuneate.

with network of ridges forming isodiametric or square cells, obovoid to ovoid, 1–1.3(1.5) × (0.6)0.8 mm.