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CCDB → Angiosperms → Hypericaceae → Hypericum → Hypericum perforatum var. angustifolium DC.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Hypericum perforatum var. angustifolium DC. | Hypericum perforatum subsp. veronense (Schrank) H. Lindb. | 16 | IPCN online | Strid, A. & R. Franzen. 1981. In Chromosome number reports LXXIII. Taxon 30: 829–842. |