Buellia dispersa is a dull white to beige or dark brown crustose areolate lichen that grows on non-calcareous rock, such as basalt, granite and gneiss, in arid to semi-arid areas of northern Africa, Europe, and southwestern North America.Lichen Flora of the Greater Sonoran Desert Region; Nash, T.H., Ryan, B.D., Gries, C., Bugartz, F., (eds.), 2001, Vol 3, Buellia dispersa in the Joshua Tree National Park (California, U.S.A.) Map collection; Kerry Knudsen, Kocourková Jana; Czech University of Life Sciences Prague, Faculty of Environmental Sciences, Department of Ecology, Czech Republic, 2012, The areolas are distinct, becoming subsquamulose (lifting up at the edges) when separated and collecting in irregular patches, otherwise they form rosettes with lobed margins. There is no prothallus. It commonly occurs in the Mojave Desert, Channel Islands, and Santa Monica Mountains, also in the Cuyamaca Mountains, Santa Ana Mountains, and San Jacinto Mountains. It is among the most common lichen species in the Sonoran Desert.

See also List of Buellia species

References