Cyperus rotundus
[Nut Grass, Coco-grass, Purple Nut Sedge, Red Nut Sedge]

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DSC03856 (08)
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DSC03854 (08)
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DSC03855 (08)
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DSC09473 (15)

Close-up views:

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DSC09466 (15)
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DSC09470 (15)
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DSC09939 (16)
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DSC09945 (16)