This species of rush with a wide circumboreal distribution is present in all regions of Italy. It grows along the margins of ponds and ditches, on compact silty-clayey, flooded, basic-to subacid soils that are rather rich in nitrogen compounds, from sea level to about 1500 m (rarely up to 2400 m). The species is rare 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; the species name refers to the leaves that are divided into joints by internal cross-septa. Flowering period: May to August.

Italian name(s): Broja (Emilia-Romagna, Romagna), Carizì (Lombardia, Brescia), Erba gurina (Liguria, Ponti di Nava), Erba rossa (Veneto, Verona), Erba rossetta (Veneto, Verona), Erba zuncaa (Liguria, Ponti di Nava), F' noccena (Emilia-Romagna, Modena), Giunch (Liguria, Mentone), Giunco (Toscana), Giunco articolato (Italia), Giunco nodoso (Italia), Giurin (Liguria, Ponti di Nava), Gocci (Emilia-Romagna, Reggio), Junge (Abruzzi), Palud tond (Friuli), Xunco (Liguria, Porto Maurizio), Zigoi (Lombardia, Brescia), Zigolì (Lombardia, Brescia), Zonch (Emilia-Romagna, Romagna), Zunch (Emilia-Romagna, Reggio), Zunco (Liguria, Genova), Zunt (Emilia-Romagna, Reggio).