Summary
A new monotypic genus and a new species of Monimiaceae, Grazielanthus arkeocarpus from the Brazilian Atlantic coastal forest are described, illustrated and compared with morphologically related taxa. The new taxon occurs in the State of Rio de Janeiro in the central coastal plain and was collected in the Poço das Antas Biological Reserve, municipality of Silva Jardim (22°30′– 22°33′S; 42°14′– 42°19′W). The new taxon is represented by dioecious climbing shrubs of the sub-canopy that have urceolate, four-lobed flowers and a fleshy hypanthium that is closed until the fruit ripens. When ripe, the hypanthium ruptures irregularly and the fruitlets are exposed. The relationships between the new genus and other neotropical (Hennecartia J. Poiss. and Macrotorus Perkins) and paleotropical (Palmeria F. Muell.) genera are discussed.
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Acknowledgements
We thank Tarciso S. Filgueiras for translating the Latin diagnosis and comments on earlier drafts, Alejandra Jaramillo and Oswaldo Peixoto for comments on manuscript. We are especially grateful for the Mata Atlantica Program (JBRJ) for facilitating fieldwork in Poço das Antas Biological Reserve.
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Peixoto, A.L., Pereira-Moura, M.V.L. A new genus of Monimiaceae from the Atlantic Coastal Forest in South-Eastern Brazil. Kew Bull 63, 137–141 (2008). https://doi.org/10.1007/s12225-007-9004-8
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DOI: https://doi.org/10.1007/s12225-007-9004-8