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CCDB → Angiosperms → Hypericaceae → Hypericum → Hypericum quadrangulum L.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Hypericum quadrangulum L. | Hypericum tetrapterum Fr. | 16 | Fedorov, 1974 | Winge 1925 | |||
| Hypericum quadrangulum L. | Hypericum tetrapterum Fr. | 16 | Fedorov, 1974 | Chattaway 1926 | |||
| Hypericum quadrangulum L. | Hypericum tetrapterum Fr. | 16 | Fedorov, 1974 | Noack 1939 |