抄録
There have been several reports on cytotypes of Deparia pycnosora sensu lato from Japan. However, previous cytological reports were made before three varieties of D. pycnosora were identified. Thus, the author examined the three varieties to determine their respective cytotypes based on the chromosome number and spore number per sporangium, and ploidy analysis. D. pycnosora var. pycnosora and D. pycnosora var. mucilagina can be diploid (2n = 80), while D. pycnosora var. albosquamata can have a tetraploid sexual cytotype (2n = 160). However, D. pycnosora var. albosquamata can be allotetraploid as its DNA content was slightly smaller than two times that of the diploid varieties.
