Contributions to the lichen flora of Saxony-Anhalt and Thuringia

First records, rediscoveries and additional localities of 32 rare or remarkable taxa from Saxony-Anhalt and Thuringia are presented. Twenty-two taxa are new to Saxony-Anhalt. These include the lichenized fungi Acarospora oligospora, Bacidina adastra, Botryolepraria lesdainii, Cladonia cryptochlorophaea, Cryptodiscus gloeocapsa, Epigloea grummannii, Lathagrium undulatum, Pertusaria albescens var. corallina, Scytinium pulvinatum, Thelidium pluvium, Verrucaria memnonia, and Verrucaria fusca auct. (non Pers.). Further new taxa for Saxony-Anhalt are the lichenicolous species Intralichen lichenicola, Lichenochora obscuroides, Minutoexcipula tephromelae, Phaeospora parasitica, Stigmidium psorae, and S. rivulorum and the saprophytic fungi Leptosillia macrospora and Thelocarpon saxicola. Verrucaria pilosoides is new to Germany; based on ITS-data, it is part of the V. muralis group. Fuscidea mollis was considered possibly extinct in Germany, but a new locality was recorded in the Bode Valley. The new record is simultaneously the first confirmed report from Saxony-Anhalt for this species. The following species have not been recorded in Saxony-Anhalt for 60 to 180 years, but could be confirmed based on recent collections: Arthonia dispersa, Bacidia subincompta, Lempholemma polyanthes, Opegrapha rupestris, Polyblastia albida, Pyrrhospora quernea, and Verrucaria margacea. New records (since 2001) of Eiglera flavida and additional localities for the recently reported Scoliosporum gallurae are listed for the studied areas.