| Pak. J. Bot., 38(3): 499-509, 2006. | Back to Contents | ||||
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Updated: 09-07-09 | ||||
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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. Department of Botany, University of Karachi, Karachi-75270, Pakistan. |
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