@article{GradsteinFlorschuetzdeWaard2013,
  author    = {Stephan Robbert Gradstein and J. Florsch{\"u}tz-de Waard},
  title     = {Results of a botanical expedition to mount Roraima, Guyana. I. Bryophytes},
  journal   = {Tropical bryology},
  volume    = {1},
  pages     = {25 -- 54},
  year      = {2013},
}