@misc{KalbAptroot2021,
  author    = {Klaus Kalb and Andr{\´e} Aptroot},
  title     = {New lichens from Africa},
  booktitle = {Archive for lichenology ; 28},
  issn      = {1868-4173},
  series    = {Archive for lichenology},
  number    = {28},
  type      = {workingpaper},
  pages     = {12},
  year        = {2021},
}