5 November 2005
Lichens come in three basic forms: crustose (like a crust), foliose (leaf-like), and fruticose (shrub-like, but in miniature), but have been grouped into up to seven artificial groups.
This page was last updated on 6 January 2008.
Crustose lichens are found on all substrate types: bark, soil, rocks, other lichens, mosses, with variations or stratification of such habitats.
Below are some information and photographs of various crustose lichens, almost all unidentified at this point, that occur in a wide range of habitats. They range in color wildly, and contribute to the biodiversity.   Some photos will have more than one lichen species, so look carefully.
All photos copyrighted by David L. Magney 2003-2007.
Here are some examples of crustose lichens.
Saxicolous crustose lichens from Escalante Grand Staircase National Monument, Utah.
Terricolous crustose (soil crust) lichen in Calf Creek Canyon on sand soil derived from Navajo Formation, Escalante Grand Staircase National Monument, Utah.
Pleocidium sp. and other crustose lichens on sandstone in Escalante Grand Staircase National Monument, Utah.
Saxicolous crustose lichens in Albion Basin, Wasatch Range (left) and on Navajo Formation sandstone in Calf Creek Canyon (right), Escalante Grand Staircase National Monunment.
Saxicolous crustose lichens on Miocene conglomerate outcrops in Santa Monica Mountains, Ventura County, California.   Right: an Aspicilia.
Saxicolous crustose lichens from the San Marcos Foothills property NW of the junction of SR 154 and SR 192 on the foothills of the Santa Ynez Mountains, Santa Barbara County, California.
Additional crustose lichen pages.
Crustose Lichen Photos 1 [under construction]
Crustose Lichen Photos 2 [under construction]
Crustose Lichen Photos 3 [under construction]
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