Cryptogamie, Bryologie
27 (1) - Pages 103-109A new species of Archilejeunea is described from the Mananara North Biosphere Reserve of Northeast-Madagascar. Archilejeunea helenae is distinguished from the related A. alata Steph. by its broad and short winged perianth keels, by its very regular pinnate branching, always well developed leaf lobuli and by its overall larger cell size.