CYPERACEAE
Nut not enclosed in a urticle
Flowering glumes distichous
Spikelets many flowered
Cyperus  L.

Stem leafy at the base; bistle absent
Style persistent, flat and hairy
Leaves glabrous

Fimbristylis  Vahl.

Style base  not dilated; continuous with the nuts
Leaves glabrous

Scirpus  L.