PJB-2006-1
POLLEN FLORA OF PAKISTAN -XLVIII. UMBELLIFERAE
ANJUM PERVEEN AND MUHAMMAD QAISER
Abstract
Pollen morphology of 50 species representing 27 genera of the family Umbelliferae from Pakistan has been examined by light and scanning electron microscope. Umbelliferae is a stenopalynous family. Pollen grains usually radially symmetrical, isopolar, prolate to per-prolate, tricolporate, colpi generally with costae, colpal membrane psilate to sparsely or densely granulated, ora la-longate, sexine as thick as nexine, or slightly thicker or thinner than nexine. Tectal surface commonly striate-rugulate or rugulate-striate rarely simply striate. On the basis of exine pattern 3 distinct pollen types are recognized viz., Bupleurum gilessii-type, Pleurospermum hookeri-type, Trachyspermum ammi-type.
To Cite this article:
Download
