Las Lejeuneaceae (Hepaticae) de Misiones, Argentina I. Las especies holostipas

Abstract

Seventeen species of holostipous (underleaves undivided) Lejeuneaceae (Jungermanniales) found in the province of Misiones, Argentina, are described and illustrated. The species are members of the subfamilies Lejeuneoideae and Ptychanthoideae and belong to the genera Anoplolejeunea, Lejeunea, leucolejeunea, Omphalanthus, Acanthocoleus, Archilejeunea, Brachiolejeunea, Bryopteris, Caudalejeunea, Frullanoides, lopholejeunea, Marchesinia, Mastigolejeunea, Odontolejeunea and Schiffneriolejeunea. All of the species are new records for Misiones and, with exception of Omphalanthus filiformis and Frullanoides densifolia (known for the province of Salta), all of them are new records for Argentina. For each taxon the habitat and the geographical distribution are indicated. A key to the species and a synopsis of their systematic position are also provided.