Comparative leaflet anatomy in Myrocarpus Allemao, Myroxylon L. f and Myrospermum Jacq. (Leguminosae-Papilionoideae-Sophoreae) species

A comparative study on anatomical characters of the leaflets of all species of Myrocarpus, Myroxylon and Myrospermum was carried out in order to evaluate their potential value in taxonomy. The study showed that among the investigated characters the arrangement of the main vascular bundles as seen in transverse section, the presence or absence of secretary structures in the midrib, the occurrence and position of papillose epidermal cells, and mesophyll organization present meaningful variation between the species and in combination or uniquely their occurrence can be used to identify the species. Some of the obtained anatomical data support generic or specific circumscriptions and are listed for the first time for most of the species of Myrocarpus, Myroxylon and Myrospermum. (C) The Linnean Society of London140324925

Floristic analysis and dispersal syndromes of woody species of the Serra de Maracaju, Mato Grosso do Sul, Brazil Análise florística e síndromes de dispersão de espécies lenhosas da Serra de Maracaju, Mato Grosso do Sul, Brasil

This paper presents a floristic survey of the wood component of cerrado s.s. (eastern face) and gallery forest (western face) areas carried out in the southern part of the Serra de Maracaju. The dispersal syndromes and floristic relations of this portion of the Serra were compared to those of other formations from different regions of Brazil. Between October 2007 and September 2008, monthly collections identified 144 species. As for dispersal syndromes, zoochory prevails, followed by autochory and anemochory. The gallery forest is a heterogeneous formation that shelters floristic elements shared with the Atlantic rain forest, the Amazonian forest, semi-deciduous seasonal forests and dry forests of the Pantanal. Low similarity between the two areas analyzed makes this region unique and suggests that the Serra de Maracaju is greatly influenced by the semi-deciduous seasonal forests of the southeastern region.Ao sul da Serra de Maracaju, foi efetuada a florística do componente lenhoso de áreas de cerrado s.s. (Face Leste) e Mata de Galeria (Face Oeste), com investigações das síndromes de dispersão e das relações florísticas desta porção da Serra com outras formações em diferentes regiões do Brasil. Os dados obtidos resultaram em 144 espécies, em coletas mensais, no período de outubro de 2007 a setembro de 2008. Para as síndromes de dispersão, verificou-se predominância da zoocoria, seguida por autocoria e anemocoria. A Mata de Galeria da Serra de Maracaju é uma formação heterogênea, que detém elementos florísticos compartilhados com a Floresta Pluvial Atlântica, a Floresta Amazônica, a Floresta Estacional Semidecidual e as Florestas Secas do Pantanal. A baixa similaridade entre as áreas analisadas confere um caráter único à região e sugere que a Serra de Maracaju recebe maior influência das Florestas Estacionais Semideciduais da Região Sudeste

Myrocarpus emarginatus (Leguminosae, Papilionoideae, Sophoreae), a new species from Bolivia

Myrocarpus emarginatus, known only from Bolivia, is described and illustrated. Its diagnostic characters are the emarginate leaflet apex, pellucid dots and streaks immersed on the leaflet blades, and the areolate reticulation of the seed chamber. The new species is morphologically similar to Myrocarpus fastigiatus Allemao, especially in the shape of its leaflets, ranging from elliptic to oblong; neither species exhibits leaflets with an acuminate apex.11335335

Floristic analysis and dispersal syndromes of woody species of the Serra de Maracaju, Mato Grosso do Sul, Brazil

This paper presents a floristic survey of the wood component of cerrado s.s. (eastern face) and gallery forest (western face) areas carried out in the southern part of the Serra de Maracaju. The dispersal syndromes and floristic relations of this portion of the Serra were compared to those of other formations from different regions of Brazil. Between October 2007 and September 2008, monthly collections identified 144 species. As for dispersal syndromes, zoochory prevails, followed by autochory and anemochory. The gallery forest is a heterogeneous formation that shelters floristic elements shared with the Atlantic rain forest, the Amazonian forest, semi-deciduous seasonal forests and dry forests of the Pantanal. Low similarity between the two areas analyzed makes this region unique and suggests that the Serra de Maracaju is greatly influenced by the semi-deciduous seasonal forests of the southeastern region