Lycophyta e Monilophyta do campo experimental da Embrapa Amazônia Oriental, município de Moju, Estado do Pará, Brasil.

Abstract

This study deals with the species of Lycophyta and Monilophyta from the Experimental Campus of Embrapa Amazônia Oriental, Moju municipality, Pará State. The studied area is located in the northeastem region of Pará and presents ca. 1,059 ha predominately covered by terra firme forest and by igapo forest. The material was collected during three expeditions performed in August and December 2006, and August 2007. The specimens were collected and treated according to the usual techniques for pteridophytes. The analysis and Identification of the specimens were based on specialized literature. The results pointed out 16 families, 29 genera and 59 species. Conceming species diversity, the richest family was Pteridaceae (14 spp.), followed by Hymenophyllaceae (11 spp.) and Dryopteridaceae (9 spp.). The pattem of geographical distribution shows 29 American species, 24 South-American and 4 species with Circum-Antarctic and Pacific distribution, respectively. According to the type of habitat, prevailed the terrestrian species (31 spp.), followed by epiphytes (23 spp.), epiphyte/terrestrian and hemiepiphytes (3 ssp. each), and aquatic species (1 sp.). The most representative genera were Tricomanes L. (Hymenophyllaceae) with 10 species. Adianlum L. (Pteridaceae) with 7 and Elaphoglossum Schott ex J. Sm. (Dryopteridaceae) with 6. Two taxa are new records to the State of Pará, Adiantum dolosum Kunze and A. multisorum A. Samp. The latter one is the second collection to the North Region of Brazil as well.