Convolvulaceae is a cosmopolitan family with 58 genera and ca. 1880 species, being more frequent in the tropics. In Brazil, there are 19 genera and approximately 370 species. Convolvulaceae is one of the richest families appearing in some floristic composition studies held in Caatinga biome. This study aimed to treat the Convolvulaceae species from Parque Nacional do Catimbau, located in Brazilian northeastern semiarid, where 30 species and five genera were found: Ipomoea, Jacquemontia, Evolvulus, Merremia and Turbina. Identification key, descriptions and comments on the species and illustrations of some diagnostic characters are presented.
Caatinga; climbing plants; floristic; Ipomoea; taxonomy
