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Carex (sedge)
Flowers enclosed by perigynium,genus includes many species.
Cyperius (nutsedge)
Flowers behind scales, spikelets relatively long and flattened.
| Nutsedge |

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| Note the size and scale |
Scirpus (Bulrush)
Flowers behind scales, spikelets relatively ovoid.

Dulichium arundinaceum (Three-way sedge)
Leaves strongly three-ranked.
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