This species with a predominantly Mediterranean distribution is present in all regions of Italy overlooking the Tyrrhenian Sea, in Abruzzo and in Molise. It grows in ditches, in stagnant waters, on the banks of marshes and waterways, with optimum in the Mediterranean belt. The species is sporadic in areas with wetlands. The genus name, already used by the ancient Greeks, is of uncertain etymology, perhaps it derives from the island of Cyprus (Kypros); the species name in Latin means 'brown' in reference to the colour of the spikes. Flowering period: June to August. Syn.: Cyperus longus L. subsp. badius (Desf.) Murb.

Italian name(s): Cipero badio (Italia), Zigolo marrone (Italia).