Abstract
The palynotaxonomic study of Salacia L. aimed to contribute to a better characterization as well as the circumscription and delimitation of this genus. The pollen grains of 21 species of the Salacia were studied. The pollen material was acetolyzed, measured, described and illustrated with photo or eletronmicrography (SEM). The analysis in SEM was used in order to elucidate the exine sculpture. The data obtained were statiscally analysed according to sample sizes. The pollen grains of Salacia are generally of medium size, oblate-spheroidal, reticulate to microreticulate, 3-colporate predominantly with a characteristic prominent apertural area. Salacia is a stenopalynous genus. However it was possible to make pollinic key with the results here obtained in light microscopy, and to segregate Salacia species or group of species using pollen characters. The present work has corroborated, by means of the pollen grains, the circumscription and generic delimitation concerning the Hippocrateaceae of South America.
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