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POLLEN FLORA OF PAKISTAN -XXII. OXALIDACEAE

ANJUM PERVEEN AND MOHAMMAD QAISER

Abstract: Pollen morphology of 3 species of the genus Oxalis L., (Oxalidaceae), from Pakistan has been examined by light and scanning electron microscope. Pollen grains usually radially symmetrical, isopolar or apolar, prolate-subprolate, rarely oblate - spheroidal, colpate. Sexine thinner or thicker than nexine. Tectum reticulate. On the basis of pollen shape, 2 distinct pollen types viz., Oxalis corniculata - type and Oxalis pescaprae - type are recognized.

Department of Botany, University of Karachi, Karachi - 75270, Pakistan.