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CCDB → Angiosperms → Helwingiaceae → Helwingia → Helwingia japonica (Thunb.) F. Dietr.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Helwingia japonica (Thunb.) F. Dietr. | Helwingia japonica (Thunb.) F. Dietr. | 120 | Darlington, 1955 | Nakajima 1944 |