Jefferson Rodrigues Maciel

Paspalum L. (Poaceae: Panicoideae: Paniceae) no estado de Pernambuco, Brasil

In this paper is showed a taxonomic study of Paspalum species from Pernambuco. Morphological study was supported by fieldwork and analyses of specimens from 18 Brazilian herbaria. The genus is represented in Pernambuco by 32 species distributed with two subgenera: Paspalum subg. Paspalum and P. subg. Harpostachys, with 29 and three species, respectively. Only P. notatum is not native. Ten species are new from Pernambuco state and the occurrence of the P. calliferum is the first record to Brazil. Information about taxonomic relationships, geographic distribution and economic use are given.

Flora da Usina São José, Igarassu, Pernambuco: Poaceae

O presente estudo tem como objetivo realizar o levantamento da familia Poaceae em fragmentos de Floresta Atlântica em Pernambuco. Foram conduzidas coletas entre 2005 e 2009, com intensificacao dos esforcos entre fevereiro de 2007 e maio de 2008. A identificacao das especies seguiu os metodos usuais em taxonomia e informacoes sobre distribuicao foram obtidas de fontes diversas. Como resultados foram identificadas 54 especies classificadas em 31 generos. Neste trabalho sao apresentados chaves de identificacao, material testemunho e comentarios sobre a distribuicao de especies e habitats onde cada uma foi encontrada. Flora of the Usina Sao Jose, Igarassu, Pernambuco: Poaceae Abstract The present study aims to survey the species of Poaceae in fragments of Atlantic Forest in Pernambuco state. Samplings were conducted between 2005 and 2008, with increased efforts between February 2007 and May 2008. The identification of species followed the usual methods in taxonomy and distribution data were obtained in the literature and surveys on specific databases. As a result, were identified 54 species and classified into 31 genera. This work presents identification keys, comments on the distribution of species and the habitats on which each was found.

Paspalum (Poaceae) no Rio Grande do Norte, Brasil

Paspalum L. (Poaceae) has high species richness and economic importance in the Brazilian flora. Given the importance of regional studies to increase taxonomic knowledge of the species and update the flora of Brazils list, this study aims to describe the genus and species of Paspalum from Rio Grande do Norte, as part of a larger Flora of Rio Grande do Norte project. Collections were made in all the phytogeographic regions of Rio Grande do Norte during the last four years, and a survey was done of the herbaria with representative collections of local flora. The conservation status of the species was evaluated according to IUCN regional categories. We recorded 16 species of Paspalum in Rio Grande do Norte. Paspalum carinatum Humb. & Bonpl. ex Flugge, P. gardnerianum Nees and P. pumilum Nees are considered vulnerable in Rio Grande do Norte state, due to man-made pressures on the environment where they occur. However, they are not threatened when evaluated on a global scale. Based on an analysis of populations in the field and under cultivation, we propose to synonymize P. pleostachyum Doll under P. ligulare Nees. Contrary to what is found in the literature, the preference for using the name Paspalum crassum Chase over P. tumidum Kuhlm. is justified. This work includes a key for species identification, morphological descriptions, taxonomic and nomenclatural comments, information on distribution and regional-threat criteria, as well as ecological aspects and illustrations of the species.

Aspectos da distribuição e conservação de Paspalum L. (Poaceae) em Pernambuco

Given the high richness and importance of Paspalum for the flora of Pernambuco, this work aims to describe the distribution of species of this genus in the state and contribute to the identification and understanding of the environmental factors that influence the distribution of the species and its conservation. With the DIVA-GIS software, maps were developed of the following parameters: species distribution, overlay of species richness by phytogeographic subdivision and a model to predict the areas with favorable climatic conditions for the establishment of the examined species. The species documented with three or fewer records and/or restricted to one location were classified as rare. Paspalum occurs widely in Pernambuco, but the distribution of most species is limited by increased seasonality in the east-to-west direction. In the region that includes the restinga, mata umida, mata seca and agreste subzones all analyzed species are found. The subzone of the mata umida (moist forest) had the largest number of species, followed by restinga (coastal) and the subzone agreste (transition zone between moist and semi-arid regions). The modeling revealed two regions with optimal environmental conditions for the species. These areas are susceptible to human action. Twelve species were classified as rare, occurring mainly in the more humid regions where an area was identified with optimal conditions for the establishment of populations of many species.

Padrões de distribuição das espécies de Paspalum L. (Poaceae: Panicoideae: Paniceae) ocorrentes em Pernambuco, Brasil

With an aim to contribute to our knowledge of distribution patterns of Paspalum species, this study examines the distribution of the species that occur in Pernambuco. In order to do this, extensive reviews of the literature, of specimens deposited in several herbaria, and of databases available on the Internet, in addition to collections made in the State of Pernambuco were performed. The 31 species analyzed were classified into two distribution patterns: broad, with 29 species and restricted, with two species. The species with restricted distribution are found in the Northeast region of Brazil, with one endemic to the semi-arid domain and the other until now only recorded from the Atlantic coast of Brazil. The broad distribution pattern can be subdivided into two groups, continuous and disjunct, which can be subsequently classified into three subgroups: American, Central-South American, and South American. The importance of this analysis for a better understanding of flora of Pernambuco origins is also discussed.

Aechmea Ruiz & Pavón from the northern portion of the Atlantic Forest

Herein we present a taxonomic synopsis of Aechmea species from Alagoas, Pernambuco, Paraiba, Rio Grande do Norte and Ceara states. The lack of a taxonomic key for identification of species, the high rate of endemism and the recent novelties published within Aechmea from this region motivated this work. Samplings were conducted in areas of all states studied between 2010 and 2014. We identified 27 species in the study areas while two names were excluded from the species list compiled from the literature. The subgenus Aechmea was the most representative with 20 species. Of particular importance was the Gravisia complex, represented by ten of the 14 species that form this informal taxonomic group. Pernambuco and Alagoas were the most species-rich compared to the other states. For each species found in the study area, we present identification keys, comments on the taxonomic relationships, habitat information and geographical distribution.

Campylocentrum brevifolium (Lindl.) E. M. Pessoa & M. Alves, a neglected and critically endangered orchid from the Atlantic Forest of Brazil

SummaryNew morphological, ecological and geographical data support the recognition of Campylocentrum brevifolium as a distinct species. This study aims to provide a nomenclatural update including a new combination and typifications, discuss its morphological affinities to allied Brazilian species (C. crassirhizum, C. micranthum and C. pauloense), and provide the conservation status of the threatened species. It also includes descriptions, illustrations, distribution maps and an identification key.

Serra do Urubu, a biodiversity hot-spot for angiosperms in the northern Atlantic Forest (Pernambuco, Brazil)

A list of angiosperms from Serra do Urubu, a montane forest area in the state of Pernambuco, is here provided. Based on 14 botanical expeditions and material deposited in herbaria, 832 taxa belonging to 442 genera and 118 families have been recorded in this area, with about 90% of the taxa identified to species level. The richest families are Orchidaceae (86 spp.), Fabaceae (51 spp.) and Rubiaceae (42 spp.). Miconia and Solanum (14 spp. each), and Psychotria (13 spp.) are the richest genera. About 15% of the recorded species are endemic to the Atlantic Forest, and another 10% are disjunct between this area and the Amazon Rainforest. The results indicate that the Serra do Urubu is one of the richest areas in terms of number of species of the Atlantic Forest in the Northeast, and corroborates the Pernambuco Endemism Center.

New geographical records of Myrcia s.l. (Myrteae, Myrtaceae) from South America, with a focus on Brazilian taxa

New geographical records for 29 species of Myrcia s.l. (Myrtaceae) from the Neotropics are presented here. They occur in the Amazon, Atlantic Forests and “ Cerrado ” vegetation of Bolivia, Brazil, Colombia, Paraguay, and Peru. The first occurrences of species are also cited for Bolivia, Colombia, Paraguay, and Peru . Short diagnostic descriptions, taxonomic and ecological comments, and geographic distribution maps are also presented.

Flora da Usina São José, Igarassu, Pernambuco: Lecythidaceae, Marcgraviaceae e Primulaceae

Abstract The order Ericales in the Atlantic Forest remnants of Usina Sao Jose was partially published in the taxonomic treatment of Sapotaceae. Following the series of publications of Usina Sao Jose, in this paper the treatment of Ericales is updated with the families Lecythidaceae, Marcgraviaceae and Primulaceae. We recorded six genera and eight species for these families. Lecythidaceae is represented by three genera and four species, Marcgraviaceae by two genera and two species and Primulaceae by one genus and two species. For the genera Eschweilera and Myrsine we recorded two species each and for the other genera we recorded one species each. This paper has an identification key and descriptions for the species, ecological and taxonomic comments for genera and species. Key words: Ericales, Atlantic Forest, floristic, taxonomy, lowland. Flora da Usina Sao Jose, Igarassu, Pernambuco:Lecythidaceae, Marcgraviaceae e Primulaceae Flora of Usina Sao Jose, Igarassu, Pernambuco:Lecythidaceae, Marcgraviaceae and Primulaceae