| Rubia olivieri A.Rich. |
| Di |
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| Di (Gebel Halal) |
| CAI |
| CAI (0) |
| Egypt (EN- Endangered) |
| 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 |
| El Hadidi, M.N. and Hosni, H.A. Conservation and threats in M.N. El Hadidi (2000)Flora aegyptiaca vo;.1(1):105-151.Palm Press and Cairo University Herbarium |
| Boulos, L. 2002. Flora of Egypt, vol.3. Al Hadara publishing, Cairo, Egypt |
| El Hadidi, M., Abdel Ghani, M. and Fahmy, A.G. 1992. The plant red data book of Egypt. 1. woody perennial.Palm Press and Cairo University Herbrium. Cairo, Egypt |
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