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CCDB → Angiosperms → Apiaceae → Heracleum → Heracleum thomsonii C. B. Clarke
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Semenovia thomsonii (C. B. Clarke) Manden. | Heracleum thomsonii C. B. Clarke | 22 | IAPT/IOPB | IAPT/IOPB Chromosome Data 8 |