This annual rush with a Mediterranean-Atlantic distribution is present in all regions of Central and Southern Italy (except in Molise), in Veneto and Emilia-Romagna. It grows on humid, sandy soils near the coast. The species is found in the outer belt of the Sardinian temporary ponds. The genus name, from the Latin 'iúngere' (to join, to tie), refers to the ancient use of weaving the stems and leaves of rush species to create different objects. Flowering period: April to July.

Italian name(s): Giunco ibrido (Italia).