Rust-coloured Sedge

Carex ferruginea, the rusty sedge or rust-coloured sedge, is a species of flowering plant in the family Cyperaceae. It is native to the Alps, the southern Carpathians, and the western Balkan Peninsula, and has been introduced to the U.S. state of New Jersey. It is a glacial relict species.

This species is a part of the distinctive grassland communities along the alpine chain. A phytosociological survey of the south-eastern Alps described the new ecological association Hormino pyrenaici–Caricetum ferrugineae, highlighting the independence of this flora from that of the northern Alps.