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CCDB → Angiosperms → Hypericaceae → Hypericum → Hypericum frondosum Michx.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Hypericum frondosum Michx. | Hypericum frondosum Michx. | 9 | IPCN67-71 | ROBSON, N.K.B., & P. ADAMS. 1968. Chromosome numbers in Hypericum and related genera. Brittonia 30: 95-106. | |||
| ! | Hypericum frondosum Michx. | Hypericum frondosum Michx. | 18 | Darlington, 1955 | Hoar & H. 1932 |