Cyperus cyperoides subsp. cyperoides is a perennial growing from a thick, rhizomatous base. The species used to form part of the Mariscus genus, known as Mariscus sumatrensis and M. nossibeensis at different times.
The species distribution is in the Eastern Cape, KwaZulu-Natal, Mpumalanga and Limpopo, as well as in some southern African countries.
The habitat is damp grassland. The habitat population of the subspecies is deemed of least concern early in the twenty first century.
Cyperus is a genus of grass-like rhizomatous herbs. They often occur in marshy conditions. Humans are sometimes allergic to the pollen of some Cyperus species (Onderstall, 1996; iNaturalist; http://redlist.sanbi.org).