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1 June 2011 Orthotrichum pilosissimum (Orthotrichaceae), a new moss from arid areas of Nevada with unique axillary hairs
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Abstract

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.

Rafael Medina, Francisco Lara, Vicente Mazimpaka, James R. Shevock, and Ricardo Garilleti "Orthotrichum pilosissimum (Orthotrichaceae), a new moss from arid areas of Nevada with unique axillary hairs," The Bryologist 114(2), (1 June 2011). https://doi.org/10.1639/0007-2745.114.2.316
Received: 28 July 2010; Accepted: 1 December 2010; Published: 1 June 2011
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