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CCDB → Angiosperms → Apocynaceae → Isonema → Isonema smeathmannii Roem. & Schult.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Isonema smeathmannii Roem. & Schult. | Isonema smeathmannii Roem. & Schult. | 22 | IPCN online | Laan, F. M. v. d. & J. C. Arends. 1985. Cytotaxonomy of Apocynaceae. Genetica 68: 3–35. |