Cyperus L.
Culms distinctly 3-angular Cyperus
Spikelets ± digitate or fasciculate in clusters on a very reduced rhachis, sometimes very few in number or solitary and then sometimes appearing lateral when the lowest involucral bract is erect. Rhachilla winged or not
Flowers falling from spikelet leaving persistent rhachilla glumes falling away from the base of the spikelet at maturity
Culms leafless at the base
Culms leafy at the base