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CCDB → Angiosperms → Diapensiaceae → Diapensia
| Taxon name | Status | Median (n) |
| Diapensia lapponica L. | Accepted | 6 |
| Diapensia lapponica subsp. obovata (F. Schmidt) Hultén | Accepted | 6 |
| Diapensia lapponica subsp. lapponica | Synonym of Diapensia lapponica subsp. obovata (F. Schmidt) Hultén | 6 |
| Diapensia obovata (F. Schmidt) Nakai | Synonym of Diapensia lapponica subsp. obovata (F. Schmidt) Hultén | 6 |