Lectotypification and differentiation of Zygodon magellanicus Malta and Z. papillatus Mont. (Orthotrichaceae, Musci), two often confused Andean-Patagonian species

Abstract

Type materials of Zygodon magellanicus and Z. papillatus have been examined, with the purpose of lectotypifying both names. Despite the frequent confusion found in examined specimens, the two species have morphological differences that support the maintenance of their specific status. An updated description of the two species is given, including illustrations and data on their ecology and distribution. The known range of Zygodon magellanicus is extended northwards to the north of the Andean-Patagonian region. Finally, characters affording the accurate discrimination of the two species are discussed.