Convolvulaceae in the Serra da Canastra National Park, Minas Gerais, Brazil

Abstract

The present treatment of Convolvulaceae is part of the project “Flora of Serra da Canastra National Park”. The Serra da Canastra National Park (PNSC, acronym in Portuguese) is located in the southwestern region of Minas Gerais, where Cerrado vegetation is dominant. A taxonomic treatment and floristic survey of species of Convolvulaceae in PNSC was carried out in order to contribute to the knowledge of the local flora, clarify morphological aspects and assess the distribution of representatives of the family in that area. The occurrence of 23 species in five genera was confirmed: Bonamia, Distimake, Evolvulus, Ipomoea, and Jacquemontia. The synonymization of one variety of Evolvulus and Ipomoea megalantha is here proposed. We provide identification keys for genera and species, morphological descriptions, comments for each taxon, illustrations, and photographs of species in the field. In addition, given the importance of pollen characters for the taxonomy of the family, an identification key based on pollen characters is provided. Notes on conservation status of the species are also presented.

Key words:
Cerrado; morning glory; rare species; taxonomy; weeds