Pollen Morphology in Relation to Taxonomy and Plant Geography of Resedaceae

Pollen morphological studies on 5 genera and 23 species have been made in the present investigation. Resedaceae is a stenopalynous family. Out of the three tribes, the tribe Cayluseeae is quite distinct pollen morphologically due to larger pollen size, apertural granules and exine ornamentation. The tribe Resedeae and Astrocarpae show close affinity. Reseda arabica Boiss. has larger pollen grains and stands apart in the tribe Resedeae. In this character it approaches the Caylusea sp. of the tribe Cayluseeae but in other pollen character they differ.

The apertural granules in this family is interesting. Its nature, origin and significance will be useful.These apertural granules in this family suggest its closer relationship with the tribe Cleomae of the family Capparaceae from the palynological point of view.