Analysis of the Ecological Distribution and Floristic Element of Aspicilia Lichens in Xinjiang A Preliminary Study of the Bryoria Lichens in Northern Xinjiang A Preliminary Study on Community Characteristics of Corticolous Lichen in Forest Ecosystem in Eastern Altay Mts . Photosynthetic Characteristics of Three Epiphytic Lichens under Different Water Conditions Pleopsidium Koerber —— a New Record Genus for Ningxia with Description of New Record Species Studies on the Morphology and Histology of Usnea longissima Ach. The Lichens Collected from the Steppe of Xinjiang Study on the Depside Derivatives of Lethariella zahlbruckneri (Dr.) Krog. Diversity and Community Quantitative Characteristics ofFloor Lichen in Yaoluoping National NatureReserve of Anhui, China Analysis on Eco-geographical Characteristics and Vertical Distribution of Lichens in Tianshan Daxiagu Xinjiang, China Analysis of the eco geographical characteristics of Usnea lichens in Northern Xinjiang A PRELIMINARY REPORT ON CORTICOLOUS LICHENS IN DONGLING MOUNTAIN,BEIJING,CHINA AN PRIMARY INVESTIGATION ON LICHENS SLOPE OF QINLING MOUNTAINS FROM THE SOUTHERN Three New Records of the Lichen Genus Pertusaria from China