A Preliminary Study On The Lichen Graphidaceae From Guangdong And Its Neighboring Provinces

Graphidaceae, which is the important part of crustose lichens, is classified into Ostropales,Lecanoromycetes, Ascomycota. The lichen Graphidaceae were reported4subfamily, more than50genera,2000species around the world, mainly distrbuted in tropical and subtropical regions.In China, most studies on the lichen Graphidaceae are focus on Yunnan, Taiwan, Hainan,Guangdong, Hong Kong and other southern coastal areas, while the study from Guangdong andits neighboring provinces located in the southeast hilly region is relatively scattered, not enoughsystem.More than300speciesmens deposited in Lichen Section of Botanical Herbarium, ShandongNormal University (SDNU) and in Lichen Section of Botanical Herbarium, LiaochengUniversity college of life science (LCU-L), are comprehensive studied with multiply methodsincluding morphology, anatomy and chemistry. In this thesis,5genus26species are reported,including Diorygma Eschw2species, Dyplolabia A.Massal1specie, Graphis Adans.19species,Leiorreuma Eschw.1species and Phaeographis Müll. Arg.1specie. In these species, one specieis new to science and one specie new to China with a series of photos of the important characters.New to sicence: Graphis maomingensis M.Z. Yang, sp. nov. New to China: Graphissubdisserpens Nyl.This is the first time to report species and local distribution of the lichen Graphidaceae fromGuangdong and its neighboring provinces.Akey to genus of the5genus and the key to species of26species with detail descriptions and discussions of related species is given. This study providesmany HD pictures enriched the basic data for Lichen Virtual Herbarium.This research completes the distribution of Graphidaceae in China, provides data to FloraLichenum Sinicorum of former research, and makes convenience for the futher research.