Adam Stebel is grateful to Dr V. Plášek for confirming the identity of Orthotrichum rogeri. Guillermo M. Suárez thanks J.-P. Frahm for confirming the determination of Campylopus anderssonii and Juan Larraín for comments on the manuscript. Financial support was provided by CIUNT (Secretaria de Ciencia y Técnica, Universidad Nacional de Tucumán) and CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas). The contribution of Vita Plasek has been in connection with the project Institute of Environmental Technologies, reg. no. CZ.1.05/2.1.00/03.0100 supported by the Research and Development for Innovations Operational Program, financed by Structural Funds of the Europe Union and the state bdget of the Czech Republic. J. van Rooy would like to thank Mr Harry Sneider-Waterberg, owner of the Waterberg Guest Farm on the ranch Okosongomingo, for useful information.
Taxonomic Additions and Changes: Nil.