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pale bulrush

Habit Plants cespitose; rhizomes short.
Leaves

20–55 cm × 8–16 mm.

Inflorescences

terminal;

branches ascending and drooping.

Spikes

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.

Flowers

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.

Achenes

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

2n

=56.

Scirpus pallidus

Distribution
[WildflowerSearch map]
[BONAP county map]
Discussion

Marshes, streamsides, ditches. 0–700 m. BW. ID, WA; north to British Columbia, east to PA, southeast to TX. Native.

Scirpus pallidus is similar to introduced S. georgianus, which has reduced perianth bristles.

Source Flora of Oregon, volume 1, page 254
Barbara Wilson, Richard Brainerd, Nick Otting
Sibling taxa
S. atrocinctus, S. congdonii, S. cyperinus, S. georgianus, S. microcarpus, S. pendulus
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