Morphological features of endocarps of five Brazilian yellow mombin plants were assessed. Plants selected to this study were as follow: Plant 1 (from Caucaia) and plant 2 (from Itaitinga), both in the State of Ceará; plants 3, 4 and 5 (from Areia, State of Paraíba). A total of 500 mature fruits were harvested from each plant, peeled, dried under shade and stored in paper bags. Random samples of 50 endocarps were taken from each batch, and the following characteristics were evaluated: weight, length and diameter in the median part, and the number of loci and seeds. Number of loci and seeds per endocarp ranged from two to five, and from zero to five, respectively. Highest frequencies observed were four loci and one seed. Endocarps of yellow mombin exhibit high frequency concerning the presence of more than one seed as well as low sterility.
