The contemporary centre is found on the southern edge of the Spinifex homelands. The arid desert which forms the environment where the Pila Nguru live has tree varieties like mulga, western myall and casuarina as well as varieties of cassia, sandalwood and spinifex. Spinifex grasses (porcupine/hummock grasses) dominated communities over 22% of the traditional Australian landmass, and the arid desert areas contain some 35 species. The variety called "soft spinifex" or, in pidgin English bush araldite is "Triodia pungens", prized for its cementing qualities. The general term in Western desert languages for the plant is "tjanpi", the plain where it grows is "pila", the plant itself, in the Pitjantjatjara and Yankunytjatjara languages was "tjapura", while the Spinifex resin extracted from it is called "kiti".