OregonFlora species comparison

20–55 cm × 8–16 mm.

22–80 cm × 3–10 mm.

terminal;

branches ascending and drooping.

terminal; open;

branches ascending or spreading.

aggregated in a few dense clusters of 12–130;

spikes sessile, narrowly ovoid, 4–5 × 1.8–2.3 mm; floral scales 1.6–2.8 mm; black or brownish black with pale midribs;

apex with awn 0.4–0.6(1.2) mm.

in dense cymes of 2–15; central spike of each cyme sessile; others sessile or pedicellate;

spikes broadly ovoid; ovoid, or sometimes cylindric, 3.5–8 × 2.5–3.5 mm; floral scales 1.1–2.2 mm; reddish brown; brownish, or blackish;

apex apiculate or mucronate; apiculus or mucro to 0.1 mm.

perianth bristles persistent, 6; rather stout; straight or curved; longest bristles equaling achene, with retrorse teeth in distal 0.3–0.5, enclosed within floral scales;

stigmas 3.

perianth bristles persistent, 6, contorted; much longer than achene; smooth, projecting beyond floral scales; mature inflorescence appearing woolly;

stigmas 3.

plumply trigonous or plano-convex, 0.8–1.2 × 0.4–0.6 mm.

plumply trigonous or plano-convex, 0.6–0.9 × 0.3–0.5 mm.

=56.

=66.