Leptolejeunea and Rhaphidolejeunea (Lejeuneaceae) of Ferreira PenaScientific station, Pará state, Brazil

A survey of the Lejeuneaceae (Hepaticae) family was performed at Ferreira Penna Research Station, Melgaço municipality, Pará, where was observed Leptolejeunea eliptica (Lehm. & Lindenb.) Schiffn., Leptolejeunea tridentata Bischler and Rhaphidolejeunea polyrhiza (Nees) Bischler. Leptolejeunea tridentata is a new occurrence to Brazil. The species are described and illustrated and na artificial key is presented to separate them, as well as additional commentaries.