@misc{Frahm2011,
  author    = {Jan-Peter Frahm},
  title     = {Eine ungew{\"o}hnliche Variet{\"a}t von Platyhypnidium riparioides},
  booktitle = {96},
  series    = {Archive for Bryology},
  number    = {096},
  type      = {periodicalpart},
  pages     = {4},
  year        = {2011},
}