Catalog of the Lichens of Arizona

摘要: Altogether 615 epithets of lichens are reported for Arizona. After the list is reduced by removing synonyms and misidentifications, 474 taxa remain -432 species in 78 genera, 2 subspecies, 16 varieties, 19 forms. The catalog based on reports 92 papers. Although there no adequate lichen flora Southwest, recently published catalogs Colorado (Shushan & Anderson, 1969) New Mexico (Egan, 1972a) following Arizona document southern Rocky Mountain region. most extensive studies were subsequent to 1950; these include Darrow's (1950) study corticolous southeastern Arizona, Weber's (1963) Chiricahua Mountains, Johnsen's (1965a) report Oak Creek Canyon Wetmore's (1970) Heppiaceae. Recently senior author collected extensively across state added 84 (Nash, 1973b; Nash Weber, 1974). major collections Arizonan located State University Herbarium Museum. land which now comprises was acquired from Treaty Guadalupe Hidalgo 1848 Gadsden Purchase 1853. Initially area incorporated as part Territory, but 1863 it became a separate territory. In 1912 statehood obtained. Arizona's approximate boundaries meridians 31 37 degrees north latitude 109 114 longitude. total this approximately rectangular 113,909 square miles. Physiographically divided Mogollon Rim into Plateau Province Basin Range south (Fenneman, 1931). lies between 5000 10,000 feet generally composed sedimentary sandstones; largely rocks volcanic origin. highest point Humphrey's Peak at 12,670 feet; lowest southwestern corner 100 feet. Climatically characterized sharply contrasting seasons (Sellers, 1960). Precipitation occurs predominantly winter summer drought characterizes spring fall. Annual precipitation varies less than 5 inches deserts over 45 along White Mountains. Yearly fluctuations temperature up 1000F daily frequently exceed