Az Eszterházy Károly Tanárképző Főiskola Tudományos Közleményei. 2004. Sectio Biologiae. (Acta Academiae Paedagogicae Agriensis : Nova series ; Tom. 25)

Pócs, T.: New or little known epiphyllous liverworts, XI. Otolejeunea subana sp. nov. from Madagascar.

Acta Acad. Paed. Agriensis, Sectio Biologiae XXV (2004) 49-57 New or little known epiphyllous liverworts, XI. Otolejeunea subana sp. nov. from Madagascar Tamás Pócs Department of Botany, Eszterházy College, Eger, Pf 43, H-3301, Hungary The Lejeuneoideae genus Otolejeunea Grolle & Tixier was described from Madagascar in 1980, based on O. moniliata Grolle. Since 11 other Otolejeunea species were described as new or transferred into the genus, a second species from Madagascar, 5 from Southeast Asia (of which 2 proved to be synonyms), 2 from New Guinea, 1 from Australia, 1 from New Caledonia and 1 from Brazil. The new Otolejeunea subana Pócs described here raises the number of recognized Otolejeunea species to 11 and the number of endemic species known from Madagascar to 3. The new species belongs to subgenus Allorgella and seems to be related to O. rabenorii Tixier from Madagascar and a less extent to O. semperiana (Gottsche ex Steph.) Grolle from Souheast Asia. From both species differs by its shape of the perianth and of female involucre and also from all other species by its special lobule teeth formation and by its areolation with triangular and intermediate cell wall thickenings. Introduction Grolle (1985) summarizes the history of the genus based on the parallel description of the related Otolejeunea (Grolle et Tixier in Tixier 1980) and of Allorgella (Tixier 1980) in the subfamily of Lejeuneoideae within the family of Lejeuneaceae. The type species of the genus Otolejeunea is O. moniliata Grolle from the Marojezy Massif of northern Madagascar. Allorgella Tixier contained 4 new species, with the type of A. hoana from Vietnam. Grolle (1985) unified the two genera, considering Allorgella only as a subgenus within Otolejeunea and describing a new species of this subgenus, Otolejenea zantenii Grolle. Transferred Prionolejeunea semperiana Gottsche ex Steph. into the genus Otolejeunea and synonymised Allorgella changiana Tixier with it. At the same time Grolle described an