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POLLEN FLORA OF
PAKISTAN –LXVIII. DIPSACACEAE
ANJUM PERVEEN
AND MUHAMMAD QAISER*
Abstract:
Pollen morphology
of three genera representing 6 species of the family Dipsacaceae from
Pakistan has been examined by light and scanning electron microscope.
Pollen grains usually radially symmetrical, isopolar, mostly
prolate-spheroidal rarely spheroidal, porate or tricolpate, sexine
thicker or thinner than nexine. Tectal surface mostly spinulose rarely
scabrate. On the basis of apertural types 3 distinct pollen types are
recognized, viz.,Dipsacus inermis–type, Pterocephalus
gedrosiacus–type and Scabiosa candollei–type.
Department of
Botany, University of Karachi, Karachi-75270, Pakistan
*Federal
Urdu University, Arts, Science and Technology, Karachi, Pakistan
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