Abstract
Cytological studies made for the first time in C. augustum have shown 2n=22 chromosomes while in C. rattrayii a triploid number (2n=33) has been found. The finding of 22 somatic chromosomes for C. amoenizun and C. asiaticum by previous workers have been confirmed. Two apparent polyploid series-one starting with 6 and the other with 11 as the basic number have been suggested for this genus. The need for extensive cytological studies and hybridization work in order to know the nature of polyploidy and speciation in Crinum has been stressed.
