| Caralluma acutangula (Decne.) N.E.Br. |
| Caralluma retrospiciens (Ehrenb.) N.E.Br. |
| CAI (Ge) |
| CAI (Gebel Elba) |
| CAI |
| CAI (9) |
| Boulos, L. 2009. Flora of Egypt Checklist, Revised annotated edition, Al Hadara Publishing, Cairo, Egypt |
| Täckholm, V. 1974. Students' Flora of Egypt ed.2. Cairo University |
| El Hadidi, M.N.& Fayed, A. 1994/95. Materials for Excursion Flora of Egypt (EFE). Taeckholmia 15 |
| Boulos, L. 2000. Flora of Egypt, vol.2. Al Hadara publishing, Cairo, Egypt |