The common depside atranorin and the depsidones stictic and norstictic acids were found in mycobionts of several crustose lichens cultured on medium with 10% sucrose as well as in natural lichens. Usnic acid and anthraquinone were found in other mycobionts on 0.4 and/or 10% sucrose media. Copyright © 1996 by the American Bryological and Lichenological Society, Inc.