| Author | Title | Journal/publisher | Literature ref. no. |
| Goyder, D.J. (2001) | A revision of the tropical African genus Trachycalymma (K. Schum.) Bullock | Kew Bulletin 56 129-161 | 414 |
Note that the process of capturing references from species to the literature and the reverse may be incomplete.
| Species found: 5 |
| Asclepias cucullata subsp. cucullata |
| Asclepias cucullata subsp. scabrifolia |
| Asclepias fimbriata |
| Asclepias graminifolia |
| Asclepias palustris |