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Key to Carex, [26i] Section 6 Divisae: section Divisae

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1 Culm angles smooth below the inflorescence; rhizomes slender, 0.6-1.8 mm thick, shoots often arising 2-several in a cluster and many nodes without shoots
1 Culm angles at least slightly scabrous below inflorescence; rhizomes coarse, 1.8-3 mm thick, typically with long unbranched segments from which shoots arise singly every few nodes.
..2 Beak of the perigynium 1/5 to 1/3 as long as the body; spikes 2-7 (-10); [exotic, naturalized primarily in brackish to salty coastal habitats]
..2 Beak of the perigynium 1/3 to 1/2 as long as the body; spikes 5-15; [exotic, naturalized primarily inland along highways treated with salt]
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