This annual grass with a wide palaeo-subtropical distribution is present in all regions of Italy, but is becoming rare. It grows in moist environments, especially on weakly saline soils along the coast. The species is sporadic in the temporary ponds of Sardinia, in coastal areas with brackish water. The genus name derives from the Greek 'kryptos' (hidden) in reference to the fact that the inflorescence is hidden by the leaf sheaths; the species name refers to the resemblance to plants of the genus Schoenus. Flowering time: July to October.

Italian name(s): Brignolo ovato (Italia), Crypsis simile a Schoenus (Italia).