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CCDB → Angiosperms → Apocynaceae → Stephanostema → Stephanostema stenocarpum K. Schum.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Stephanostema stenocarpum K. Schum. | Stephanostema stenocarpum K. Schum. | 22 | IPCN online | Laan, F. M. v. d. & J. C. Arends. 1985. Cytotaxonomy of Apocynaceae. Genetica 68: 3–35. | |||
| Stephanostema stenocarpum K. Schum. | Stephanostema stenocarpum K. Schum. | 7 | IPCN online | Rao, P. N. & L. B. Mwasumbi. 1981a. In Chromosome number reports LXXII. Taxon 30: 701. |