Lycophyta e monilophyta da rppn "klagesi" município de Santo Antônio do Tauá, estado do Pará, Brasil

Abstract

Floristic and taxonomic studies are being developed on the Iicophytes and monilophytes occurring in the various ecosystems of the state of Pará. Regarding the North region, there are few works dealing exclusively with these groups. Thus, the present study presents a list of species of Lycophyta and Monilophyta occurring in RPPN "Klagesi", municipality of Santo Antônio do Tauá, state of Pará. The studied area is located in the northeast of Pará, on the edge of the PA 140 highway, Km 15; it covers about 23 ha, between the geographical coordinates 01"00' 5 - 48°00' W and 01°20' 5 - 48°20' W. The climate of the region is described as tropical rainy, permanently hot and humid. Annual rainfall is around 2350 mm and average annual temperature varies around 25° (and relative humidity oscillates around 85%. The vegetation cover is composed of secondary terra firme forest in successional process for more than 50 years. The collection was carried out according to the usual techniques for vascular plants and the identification of the specimens collected was based on specialized literature. The testimonial material was deposited in the MG Herbarium of the Museu Paraense lrnílio Goeldi. The area is represented by 28 species, 14 genera and 13 phyla, of which the most representative were Hymenophyllaceae and Pteridaceae with six species. Regarding the geographical distribution pattern, 15 species are American, 13 species are South American, 1 circum-Antarctic species and 1 Pacific species. Some species found as Trichomanes kapplerianum J. M. Sturm, T.pinnatinervium lenrnan, T.punctatum Poir.ssp labiatum (Jenman) Wess. Boer, Cyathea surinamensis (Miq.) Domin and Danaea simplicifolia Rudge are few represented in the herbaria of the Northern Region, showing the importance of studies on lycophyte and monilophyte species for the Region.