Aptroot A., Saipunkaew W., Sipman H.J.M., Sparrius L.B.,& Wofseley P.A. 2007. New iichens from Thailand,mainly microlichens from Chiang Mai. Fungal Diversity 24: 75-134.
Aptroot A. & Seaward M.R.D. 1999. Annotated checklist of Hongkong lichens. Tropical Bryology 17: 57-101.
Aptroot A. & Sipman H.J.M. 2001. New Hong Kongiichens,ascomycetes and lichenicolous fungi. J.Hattori Bot.Lab.(91):317-343.
DoidgeE.M.1950.The South African fungi and lichens to the end of 1945. Bothalia 5: 1-1094.
Filson R.B.i986. Checklist of Australian lichens. Second Edition. 160 pp. National Nerbarium of Victoria,State Forest and Lands, Department of Conservation,Forests & Lands, Melbourne.