It is perennial sedge 30-100 cm tall with a longish creeping rootstalk. The 3-6 mm broad leaves are commonly grayish green. The cylindrical flower spikes on 1-7 cm long peduncles are 3-10 cm long and under 1 cm thick, below the staminate. Follicles are perpendicular to the spike stem.
This sedge is common and widespread on shorelines, in low and high moors, and swamped meadows. It often forms vast homogenous sedge beds. It flowers in May-June.
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