Triodia irritans

Triodia irritans is a species of plant that forms low and dense mounds of tough grassy vegetation. It is found on sandplains in arid regions of southern and central Australia.

Triodia irritans
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Poaceae
Genus: Triodia
T. irritans
Binomial name
Triodia irritans

The species was first described by Robert Brown in 1810. A common name for this and other species of Triodia is porcupine grass. Triodia irritans is found on red and grey sands in Western Australia, South Australia, and the Northern Territory, where it dominates a plain, dune or rocky hill as tussocks. Flowering occurs throughout the year.[1]

A minute species of dasyurid marsupial, Ningaui yvonneae, favours the protection and opportunities that T. irritans hummocks provide, and is a dominant component of the vegetation in which the tiny carnivore occurs.[2]


  1. ^ "Triodia irritans". FloraBase. Western Australian Government Department of Parks and Wildlife.
  2. ^ Bos, D.G.; Carthew, S.M.; Lorimer, M.F. (2002). "Habitat selection by the small dasyurid Ningaui yvonneae (Marsupialia: Dasyuridae) in South Australia". Austral Ecology. 27 (1): 103–109. doi:10.1046/j.1442-9993.2002.01163.x. ISSN 1442-9993.