Z. joazeiro Mart. leaves were collected in Chapada do Araripe,Crato city, Ceará, Brazil. The plant material was identified by Dr.Maria Arlene Pessoa da Silva, and a voucher specimen was deposited with the identification number 30.2013 at the Herbarium ‘‘Dárdano de Andrade Lima’’ of Universidade Regional do Cariri (URCA), Crato, Ceará, Brazil.