[in German with English abstract: ] Lichens oft the inland dunes of Sorgwohld (District Rendsburg-Eckernförde). The inland dunes of Sorgwohld are covered by heathland and small woodlands as part of a postglacial sand area in the north oft the city of Rendsburg. Inhabiting about 122 lichen species, the sandy dry grasslands and heathland with rare and endangered species such as Cladonia borealis, C. monomorpha, C. pulvinata, C. crispata var. cetrariiformis and C. zopfii make the area a lichen hotspot of Schleswig-Holstein. C. pulvinata was rediscovered in 2018 and in 2020 Bacidina mendax was reported for the first time in Schleswig-Holstein.