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.

50 Pócs T. other subgenus under the name of Phoxolejeunea, with a new species, Otolejeunea streimannii Grolle. Thiers (1992) added the new Otolejeunea australiensis from Queensland and Tixer described Otolejeunea rabenorii from Madagascar and Allorgella schnellii from Brazil (Tixier 1988, 1991). Zhu & So (1997) recombined the Brazil species, as Otolejeunea schnellii, wich was confirmed and fully described and illustrated by Grolle and Reiner-Drehwald (2000). Zhu & So (1998) described Otolejeunea philippinensis from the Philippines and synonymized O. noerteana (Tixier) J.J. Engel & B.C. Tan with Otolejeunea semperiana (Gottsche ex Steph.) Grolle. Finally Grolle and Reiner-Drehwald (2000) provided a key to the 10 hitherto known species. According to Grolle (1985) the main characters of the genus Otolejeunea are the flat perianth with two giant, inflated ears, the one sided innovation of Pycnolejeunea type, the hypostatic male branch with only 1 (-2) underleaves at its base, the proximal position of hyaline papilla, the leaf lobe and underleaf shape, the two lobed rhizoid initial plate and the evenly incrassated cell walls. The new species described below possesses all these characters except the evenly incrassated cell walls - it has triangular and sometimes even intermediate thickenings. But this is not a primary character and can develop in most lejeuneaceous groups. I observed trigones also in the cell walls of Otolejeuna rabenorii Tixier. New taxa Otolejeunea subana spec. nov. (See figures 1 -20). Otolejeuneae rabanorii et O. semperianae similis sed satis differt perianthiis rotunde auriculatis sinu obcordatis, bracteolis breve rotundilobatis sinu angustissimi, bracteis falcatis perianthi 2/3 longis, foliorum lobi brevissime bidentatis. Species nova dedicata ad collegam illustrissimam doctorem Johannum Subam. TYPUS: Madagascar, Toamasina Province. Mantady Forest Reserve N of Andasibe (Périnet), S 18°50\ E 48°28\ alt 1030 m., epiphyllous in submontane rain forest. Coll. T. Pócs & A. Szabó 9485/R. Holotypus: EGR. Pale green shoots 1-1.4 mm wide and 6-8 mm long, creeping or forming small (8-12 mm diameter) patches on living leaves. Stem diameter 50-75 jim, irregularly pinnate, with Lejeunea type branches. Stem with two rows of ventral merophytes. Leaves imbricate, spathulate in shape, the leaf bases not covering the stem. Lobe 600-800 p.m long and 350-600 jam wide. The antical lobe margin often denticulate (prorate) due to the protruding cross walls of marginal cells. Lobe cells at the middle more or less isodiametric,