Sanionia (Bryopsida, Amblystegiaceae) en la Península IbéricaRevisión y biogeografía

Resumo

The genus Sanionia Loeske is revised for the Iberian Peninsula, based on specimens kept in the main Spanish, French and Portuguese herbaria. The presence of Sanionia uncinata (Hedw.) Loeske in the Iberian Peninsula is confirmed. All the revised specimens previously determined as Sanionia uncinata var. plumulosum Schimp., S. uncinata fo. plumulosa Schimp. (both non-existent herbarium combinations for the name Hypnum uncinatum var. plumulosum Schimp.), Hypnum uncinatum Hedw. var. aduncum (non-existent herbarium combination), Drepanocladus aduncus var. falcatus (Renauld) Renauld and Drepanocladus uncinatus var. plumosus (Schimp.) Warnst. have been re-identified as Sanionia uncinata. S. uncinata is common in the high mountains of the Eurosiberian and Mediterranean Region of the northern and central part of the Iberian Peninsula in four differentiated areas: 1) Cordillera Cantábrica, 2) Pyrenees, 3) Sistema Central and 4) Sistema Ibérico (from Sierra de La Demanda to el Maestrazgo), being rare in the south of Spain (Sierra Nevada). It occurs in mesophytic habitats with hyperhumide-humide ombroclimate (mean annual rainfall > 1.200 mm), preferring acid substrata; it grows on rocks, trunks, soils and grasslands around of subalpine-alpine lakes, with anthropogenic influence (Nardetea strictae communities). S. uncinata is proposed as rare species (R) in Portugal. A distribution map, iconography, spores and peristome SEM microphotographs are provided.