Arthopyrenia salicis. [Descriptions of Fungi and Bacteria].

A description is provided for . Some information on its dispersal and transmission and conservation status is given, along with details of its geographical distribution (Algeria, USA (Alabama, Louisiana, Minnesota, Nebraska and South Dakota), Armenia, Papua New Guinea, Turkey, Austria, Belgium, Bulgaria, Czech Republic, Finland, France, Germany, Greece, Hungary, Irish Republic, Italy, Luxembourg, Netherlands, Norway, Poland, Russia (Komi Republic, Krasnodar Krai, Nenets Autonomous Okrug, Republic of Adygea, Republic of Dagestan and Tver Oblast), Slovenia, Spain, Sweden, Switzerland, Ukraine and UK) and hosts (Salix elegans, Arthonia punctiformis, A. radiata, Lobaria sp., Naetrocymbe nitescens, N. punctiformis, Acer sp., Aesculus sp., Alnus glutinosa, Betula sp., Carpinus sp., Castanea sativa, Corylus avellana, Crataegus sp., Fagus sp., Fraxinus excelsior, Fraxinus sp., Ilex sp., Pistacia lentiscus, Populus tremula, Populus sp., Quercus marilandica, Q. robur, Quercus sp., Salix elaeagnos, Salix sp., Sorbus sp. and Trentepohlia sp.).