This sedge is a very polymorphic species with a wide ecological amplitude and a mainly European distribution, present, with two subspecies, in all regions of Italy. It grows in the clearings of woods at the edge of ponds, but also in dry meadows, on compact clay soils that retain water, from sea level to the alpine belt. The species is sporadic on the edge of Sardinian temporary ponds, in contact with Mediterranean garrigues and grasslands. The genus name derives from the Greek 'keiro' (to cut), because of the sharp edges of the leaves of some species; the species name means 'weak, drooping’; the name of the subspecies derives from Greek and means 'with reddish ears'. Flowering period: March to June.

Italian name(s): Carice fiacca serrulata (Italia), Carice glauca dentellata (Italia).