1985 年 50 巻 3 号 p. 453-459
Detailed cytological study of B. quoyana (2n=123) was made. Regular formation of 41 bivalents and 41 univalents was consistantly noticed in the spore mother cells.
Detailed karyomorphology of the material was studied and the data indicated that the karyotype is composed of two distinct sets, a diploid one consisting of 41 pairs, and a haploid set consisting of 41 non-homologous chromosomes.
The result appeared to indicate that this is an allotriploid species possibly originated spontaneously by the fusion between the unreduced (2n) and normal (n) gametes of two diploid species of Bolbitis.