New lichens from Thailand, mainly microlichens from Chiang Mai

Abstract

Results from collecting trips in Chiang Mai and other Provinces of Thailand are reported here. Excluding new species described here the paper includes about 300 species new to Thailand, six of which are first records for the Northern Hemisphere of species described from Australia or Papua New Guinea A few species are reported here for the first time since their original description, such as Bacidiopsora orizabana, which was known only from Mexico, but is here reported from Thailand and Taiwan. Concentration on specific groups of crusts led to the identification of three yellow crusts which are usually found sterile. One was identified as the pycnidial form (with stalked pycnidia) of Piccolia conspersa. The others are described below as Pyrrhospora luminescens Aptroot & Wolseley, Rinodina citrinisidiata Aptroot & Wolseley (also reported from Yunnan, China). A pantropical lichen with an unusual hyphomycetous anamorph, superficially resembling a mould, is described as Bacidina penicillata Aptroot, Cáceres, Lücking & Sparrius. Two common, usually sterile isidiate crusts were found with fruiting bodies; Platythecium dimorphodes and Gassicurtia clathrisidiata Aptroot described below. The following further species are described as new to science: Bactrospora inspersa Aptroot, Brigantiaea lobulatisidiata Aptroot, Enterographa inthanonensis Sparrius, Haematomma parda Aptroot, Hypoflavia crustosa Aptroot, Pyrenula aurantiopileata Aptroot, Pyrrhospora fuscisidiata Aptroot & Wolseley and Triclinum sorediatum Aptroot & Sparrius. The new combinations Lopezaria isidiza (Makhija & Nagarkar) Aptroot & Sipman and Malcolmiella aurigera (Fée) Aptroot are made, and the combination Phaeographopsis indica (Patw. & Nagarkar) Sipman & Aptroot is validated.