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CCDB → Angiosperms → Apiaceae → Heracleum → Heracleum olgae Regel & Schmalh.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Tetrataenium olgae (Regel & Schmalh.) Manden. | Heracleum olgae Regel & Schmalh. | 22 | IPCN online | Vassiljeva, M. G., T. V. Alexeeva, M. G. Pimenov & E. V. Kljuykov. 1991. IOPB chromosome data 3. Int. Organ. Pl. Biosyst. Newslett. (Zurich) 17: 10–13. | |||
| Tetrataenium olgae (Regel & Schmalh.) Manden. | Heracleum olgae Regel & Schmalh. | 22 | IAPT/IOPB | IAPT/IOPB Chromosome Data 19 | |||
| Heracleum olgae Regel & Schmalh. | Heracleum olgae Regel & Schmalh. | 22 | IAPT/IOPB | IAPT/IOPB Chromosome Data 29 |