Sonoran Desert and Mediterranean California Lichen Flora Project

对大索诺兰沙漠地区（亚利桑那州、南加州、下加利福尼亚州、索诺拉和北锡那罗亚州）地衣（包括微型和大型地衣）的国际合作调查由DEB 92-01111资助。该项目在撰写现代地衣植物区系方面取得了进展，供系统学家和其他专业植物学家以及决策者使用。由于索诺兰沙漠包括大量的《清洁空气法》第一类地区，而且地衣是空气污染的极好指标，预计这种植物群将对美国林业局和国家公园管理局（美国和墨西哥）的土地管理者有相当大的效用。已与墨西哥境内的机构建立了联络，并与全球60多名著名的地衣系统学家建立了合作关系。迄今为止，该项目的出版物记录了50种新物种的发现，以及200多种物种在索诺兰沙漠的首次分布记录。项目建成后，将覆盖328属1700余种植物。

9706984 Nash A cooperative, international investigation of the lichens (both micro-and macrolichens) of the greater Sonoran Desert region (Arizona, southern California, Baja California, Sonora and Northern Sinaloa) was funded by DEB 92-01111. The project has made progress toward writing a modern lichen flora for use by systematists and other professional botanists as well as decision-makers. Because the Sonoran Desert includes a significant number of Clean Air Act Class I areas, and because lichens are excellent indicators of air pollution, it is anticipated that the flora will have considerable utility to land managers in both the U.S. Forest Service and National Park Services (both U.S. and Mexican). Liason has been established with institutions within Mexico and collaboration and with over 60 prominent lichen systematists worldwide. Publications from this project so far document the discovery of 50 species new to science, and the first records of distribution in the Sonoran Desert for over 200 more. By the completion of the project, the flora will treat over 1700 species in 328 genera.