ResumoConvolvulaceae é constituída por 58 gêneros e ca. 1880 espécies com distribuição cosmopolita, sendo mais frequente nos trópicos. No Brasil é representada por 19 gêneros e aproximadamente 370 espécies. Em levantamentos florísticos na Caatinga, Convolvulaceae aparece como uma das famílias com maior riqueza de espécies. Esse estudo tem como objetivo realizar o tratamento taxonômico das Convolvulaceae do Parque Nacional do Catimbau-PE. Foram encontradas 30 espécies e cinco gêneros: Ipomoea, Jacquemontia, Evolvulus, Merremia e Turbina. São apresentados chave de identificação, descrições e comentários sobre as espécies, além de ilustrações de caracteres diagnósticos. Palavras-chave: Caatinga, Ipomoea, florística, taxonomia, trepadeiras. AbstractConvolvulaceae 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.
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