Pollen grains of Capparis flexuosa L., C. frondosa Jacq., C. jacobinae Moric ex Eichler and C. yco (Mart.) Eichler, collected in the State of Pernambuco, were studied with the aim of contributing to the best delimitation of the species as well as of extending knowledge on pollen morphology of this family.The pollen material was acetolised and examined at optical and scanning electron microscopy level. The morphological differences observed, especially of exine ornamentation, showed the euripalynous tendency of the genus Capparis.
pollen grains; pollen morphology; Capparis; Pernambuco State; Brazil