Convolvulaceae in APA Jenipabu, Rio Grande do Norte, Brazil

Abstract

In this study we realized the floristic survey of Convolvulaceae species ocurrences in the Área de Proteção Ambiental Jenipabu - APAJ. Data were obtained from random field expeditions in the period from August 2010 to July 2011. Nine species were recorded, distributed in five genera: Daustinia Montana, Distimake aegyptius, Evolvulus frankenioides, E. ovatus, Ipomoea asarifolia, I. brasiliana, I. pes-caprae, I. rosea, and Jacquemontia bahiensis. The species D. Montana, I. asarifolia and I. pes-caprae occurs preferrencially in humid areas, and the rest were found in dry areas. Daustinia Montana, I. brasiliana, and J. bahiensis are endemic from Brazil, and I. rosea is endemic from northeastern Brazil. The morphology of the leaves, sepals and gynoecium were the main characters to diagnose the species. The treatment has identification keys, descriptions, illustrations and comments about the taxa distribution.