PJB-2006-56
POLLEN FLORA OF PAKISTAN - L. RANUNCULACEAE
ANJUM PERVEEN AND MUHAMMAD QAISER
Abstract
Pollen morphology of 27 species representing 10 genera of the family Ranunculaceae from Pakistan has been examined by light and scanning electron microscope. Pollen grains usually radially symmetrical, isopolar rarely apolar. Mostly sub-prolate, often oblate-spheroidal to prolate, colpate or pantocolpate, rarely pantoporate, sexine thicker or thinner than nexine. Tectal surface mostly spinulose or scabrate often striate or verucate. On the basis of exine ornamentation and apertural types, 5 distinct pollen types are recognized viz., Clematis grata-type, Delphinium denudatum-type, Ranunculus muricatus-type Thalictrum isopyroides-type and Trollius acaulis-type.
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