Abstract
The cytology of Cylindrocapsa scytonemoides has been investigated. The chromosome number is 36. Out of these one of the chromosomes, is considerably longer (2.5μ) in comparison with the rest. The septum initiation takes place in telophase which is unlike the one reported in C. involuta. The nuclear behaviour and the morphology of the chromosomes are in general agreement with those of the other members of the Ulotrichales so far studied. Further the germlings of this alga have attaching discs which are similar to Uronema. In view of these findings the systematic position of the alga has been discussed.
