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Abstract

Pollen morphology of 14 species representing 5 genera of the family Zygophyllaceae from Pakistan has been examined by light and Scanning Electron Microscope. Pollen grains are usually radially symmetrical, isopolar or apolar, 3-polycolporate or pantoporate, prolate-spheroidal to sub-prolate or prolate often oblate-spheroidal. Sexine thinner or thicker than nexine. Tectum generally coarsely reticulate rarely rugulate - reticulate or foveolate to reticulate often striate. On the basis of tectum types 4 distinct pollen types are recognized viz., Nitrartia retusa, Peganum harmala, Tribulus terrestris and Zygophyllum simplex. Playnological data has been useful at generic and specific level.

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