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Pollen diversity and its implications to the systematics of mimosaceous species by LM and SEM

In this study we have discussed pollen morphology of 14 mimosaceous species belonging to five genera by using light microscopy (LM) and scanning electron microscopy (SEM). The palynological features of species were determined by both qualitative and quantitative characters. The qualitative characters include pollen shape, colpi arrangement, and exine sculpturing. Oblate spheroidal shaped pollens were noted in Albizia procera, Albizia lebbeck, Acacia tortilis, Acacia ampliceps, and Acacia modesta, subprolate shaped pollen in Leucaena leucocephala, Prosopis julifera, and Acacia nilotica, prolate pollen in Acacia farnesiana and Prosopis glandulosa while spheroidal, sub spheroidal and sub oblate pollen grains were observed in Acacia catechu, Mimosa himalayana, Prosopis cineraria, respectively. Sparsely foveolate, reticulate, scabrate, and scrobiclate exine sculpturing were observed. Colpi with sunken ornamentation were seen in P. cineraria, P. glandulosa, P. juliflora, and L. leucocephala while colpi were absent in rest of the studied species. The quantitative characters were statistically studied using SPSS software. The current study gives important morpho‐palynological characters for identifying and validation of close related and similar taxa which will aid to the phylogenetic analysis of Mimosaceae family.