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POLLEN FLORA OF PAKISTAN. 1. MALVACEAE

ANJUM PERVEEN, SHAHIDA SIDDIQUI, AMIR FATIMA AND M. QAISER

Abstract: Pollen morphology of 42 species belonging to 12 genera of the family Malvaceae from Pakistan were examined by light and scanning electron microscope. Pollen morphology of the family is fairly uniform. Pollen grains are generally radially symmetrical apolar, rarely isopolar (Abutilon), mostly spheroidal to oblate - spheroidal rarely sub-oblate, pantoporate or triporate zonoaperturate. Tectum uniformly echinate, medium to finely -perforated, or punctate with granules or scabrae in between spines. On the basis of various pollen characters viz., polarity, , diameter of grains, exine thickness and spines size, 6 distinct pollen types recognized are Abelmoschus crinitus - type, Abutilon indicum - type, Hibiscus aristi-valvis type, Malva parviflora - type, Senra incana - type aml Sida ovata - type.

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