Estudos taxonomicos do genero Maytenus Mol. emend. Mol. (celastraceae) no Brasil extra-amazonico

AUTOR(ES)
DATA DE PUBLICAÇÃO

1992

RESUMO

This work comprises the taxonomic investigation of the extra-amazonian Brazilian species of the genus Maytenus MoI. (Celastraceae). Botanical material from several herbaria were examined and some field observations were made. The genus Maytenua is mainly tropical and differenciated by its spineless branches, capsular, bivalvular fruits and seeds with a complete aril. At the apecific leveI the most significant the characteristics are the morphology of the young branches such as presence or absence of lenticels, trichomes, wings and angularity; leaf characters; type of inflorescence and shape of the fruits. Forty-three species, grouped in the sections Mavtenus MoI. and Oxyphylla Loes, were acknowledged, five of wich are new. Besides the analytical keys for alI the taxa, descriptions, illustrations, a list of the examined material, geographical distribution and commentaries on morphology, nomenclature, typification and generic and infrageneric relationships are presented. The state of Bahia (Chapada Diamantina and Coastal Region) and Rio de Janeiro (Atlantic Forest) present the highest number of endemic taxa. The species M. basidentata, M. glazioviana, M. comocladiaeformis and M. radkloferiana are included in the category "rare" and probably on the verge of extinction.

ASSUNTO(S)

botanica - classificação plantas medicinais plantas - identificação

ACESSO AO ARTIGO

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