hadidii, is also very rare today due to draining of its wetland habitat; feared extinct in the mid-20th century, it is still found at a few sites in the Wadi El Natrun region and northern Sudan.

[8] Many fossil fruits of a Cyperus species have been described from middle Miocene strata of the Fasterholt area near Silkeborg in Central Jutland, Denmark.

[9] Several fossil fruits of †Cyperus distachyoformis have been extracted from borehole samples of the Middle Miocene fresh water deposits in Nowy Sacz Basin, West Carpathians, Poland.

C. giganteus, locally known as cañita, is used by the Yokot'an Maya of Tabasco, Mexico, for weaving petates (sleeping mats) and sombreros.

The chufa flatsedge (C. esculentus) has edible tubers and is grown commercially for these; they are eaten as vegetables, made into sweets, or used to produce the horchata in the Valencia region.