Cytological observations on 16 species (22 taxa and cytotypes) ofDiplaziumfrom various regions of the Himalayas, have been carried out. Out of these, as many as 3 species (5 taxa and cytotypes) are apogamous but incidence of polyploidy is rather low, only 18.2% and that too upto tetraploid level. Triploid apomicts are in abundance. A diploid sterile hybrid,D. polypodioides X asperumhas been detected in which monads and diads are frequently produced. It has also been noticed that the putative parents of triploid apogamousD. simpliciveniumcould be diploid apogamousD. stenochlamysand any of the diploid sexual forms ofD. latifoliumcomplex.