HEINRICHS, J., S. DONG, A. SCHÄFER-VERWIMP, D. F. PERALTA, K. FELDBERG, A. R. SCHMIDT, and H. SCHNEIDER. “Towards a Monophyletic Classification of Lejeuneaceae II: Subtribes Pycnolejeuneinae and Xylolejeuneinae Subtr. nov., Transfer of <em>Otolejeunea</em> To Lepidolejeuninae, and Generic Refinements”. Phytotaxa, vol. 163, no. 2, Mar. 2014, pp. 61–76, doi:10.11646/phytotaxa.163.2.1.