Pollen morphology of selected species of Anacardiaceae and its taxonomic significance

Abstract

In the present work, the pollen morphology of 22 species of Anacardiaceae was analysed, occurring in the state of Bahia, Brazil. The palynological material was obtained from specimens deposited in herbaria. The pollen grains were acetolysed, measured, illustrated and described under light and scanning electron microscopies. The quantitative data were statistically analysed according to sample size. The analysed species presented pollen grains in monads, small to medium sized, isopolar, amb circular to subtriangular, with shapes varying from oblate-spheroidal to prolate, 3-colporate, with fastigium in some species. The exine ornamentation was characterized as psilate, striate, microreticulate-striate, striato-perforate, suprastriato-infra(micro)reticulate. The pollen morphology variation confirms the eurypalynous character of the family. The attributes of the apertures and exine may collaborate in the taxonomic circumscription and provide a clarification of the phylogenetic relationships of the group.

Floristic characterization and pollen morphology of plants visited by Apis mellifera L. in caatinga areas in Bahia, Brazil

“…Pereira et al (2014) and Silva et al (2016a) characterize the pollen grains of Anacardium occidentale as having striate-reticulate exine, which disagrees with the striate-microreticulate ornamentation reported by us. Under SEM, Assis et al (2021) described the pollen grains of A. occidentale with suprastriato-inframicroreticulate exine and M. indica with striato-perforate ornamentation, such perforations were not observed under LM. Matos et al (2014) describe the pollen grains of Pavonia cancellata and Sida linearifolia A.St.-Hil.…”