 
  	  CCDB is a community resource. If you are aware of any missing data or if any of the counts are erroneous, please submit new counts, or report erroneous counts.
CCDB → Angiosperms → Polygonaceae → Rumex → Rumex japonicus Houtt.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Rumex japonicus Houtt. | Rumex japonicus Houtt. | 100(50II) | IPCN online | Himi, H., Y. Iwatsubo & N. Naruhashi. 1999. Chromosome numbers of 11 species in Japanese Rumex subg. Rumex (Polygonaceae). J. Phytogeogr. Taxon. 47: 121–130. | |||
| Rumex regelii F. Schmidt | Rumex japonicus Houtt. | 40 | IPCN online | Probatova. 2004. Chromosome numbers of selected vascular plant species from Sakhalin, Moneron and the Kurile Islands. Biodivers. Biogeogr. Kuril Islands Sakhalin 1: 15–23. |