RT Journal Article T1 Orthotrichum pilosissimum (Orthotrichaceae), a new moss from arid areas of Nevada with unique axillary hairs A1 Medina Bujalance, Rafael A1 Lara, Francisco A1 Mazimpaka, Vicente A1 Shevock, James A1 Garilleti, Ricardo AB Orthotrichum pilosissimum is described from herbarium material and recently collected specimens in the state of Nevada. Its specific epithet refers to the diagnostic hyper-developed axillary hairs, which are frequently longer than 1 mm, multiseriate and branched, covering most of the stems surface and sometimes protruding from the foliose shoots. These hairs are not only unique in the genus but also among mosses, providing a reliable diagnostic character for the new taxon. Additional gametophytic and sporophytic characters that contribute to its taxonomic delimitation are also given. PB BioOne SN 0007-2745 YR 2011 FD 2011 LK https://hdl.handle.net/20.500.14352/95391 UL https://hdl.handle.net/20.500.14352/95391 LA eng NO Medina, Rafael, et al. «Orthotrichum Pilosissimum (Orthotrichaceae), a New Moss from Arid Areas of Nevada with Unique Axillary Hairs». The Bryologist, vol. 114, n.o 2, junio de 2011, pp. 316-24. https://doi.org/10.1639/0007-2745.114.2.316. NO The stay was granted by the Spanish Ministry of Science and Innovation (FL) and the University of Valencia (RG). This work was funded by the Spanish Ministry of Education and Science, Grant CGL2007-61389. NO Ministerio de Educación y Ciencia (España) DS Docta Complutense RD 9 abr 2025