OregonFlora species comparison

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

trigonous to roundly trigonous; (0.5)5–25(105) cm × 1–2.5(7.5) mm.

(2)7–22 cm × 2.2–4 mm.

5–25(90) cm × 2–5(11) 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.

clusters cylindric; dense, 1–3(6); (4)10–30(45) × (6)10– 16(23) mm;

rays 2–6(12), 1–8(28) cm long;

inflorescence bracts horizontal to ascending at 30°.

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.

(20)40–80, linear, quadrangular in cross section, 3–8(11) × 1–1.5 mm;

rachilla persistent; at maturity becoming laterally free, remaining firmly attached proximally;

wings 0.3(0.4) mm wide; floral scales deciduous, 6–16(30), appressed, oblong-ovate to obovate, 1.3–1.5 × 0.8–1.2 mm, light brown with reddish speckles and greenish midstripe;

lateral ribs 0; medial ribs 3;

apex obtuse, mucronulate.

anthers 0.1 mm;

styles 0.1 mm;

stigmas 0.1–0.3 mm.

anthers 0.2–0.3 mm;

styles 0.7–0.8 mm;

stigmas 0.4 mm.

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

base cuneate.

ovoid; (0.4)0.7–1 × 0.4–0.6 mm.