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Abstract

Pollen morphology of 13 species representing 9 genera of the family Verbenaceae from Pakistan has been examined by light and scanning electron microscope. Pollen grains are usually radially symmetrical, isopolar, tricolporate or tricolpate, mostly prolate-spheroidal to sub-prolate rarely oblate-spheroidal, sexine is much thicker or thinner than nexine. Tectum type varies from subpsilate to reticulate, rugulate-reticulate often spinulose-reticulate. On the basis of apertures and exine ornamentation eight distinct pollen types are recognized viz., Caryopteris grata-type, Caryopteris odrata-type, Chascanum marrubifolium-type, Clerodendrum phlomoides - type, Lantana indica–type, Phyla nodiflora–type and Verbena officinalis–type.

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