We present a morphological description of the flower and fruit of Ottoschulzia rhodoxylon based on material collected at Hacienda La Esperanza Nature Reserve, Puerto Rico, cultivated material, as well as on data in herbarium specimens. Plants of Ottoschulzia rhodoxylon bear hermaphrodite flowers, and at least some appear to be fully functional. We also summarize phenological data for the species: flowering occur at the beginning of the rainy season, especially June; fruits develop further, until November.