Galium nigricans SynonymySource: Marhold, K. (2011+): Rubiaceae (pro parte majore). – In: Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.Galium nigricans Boiss., Diagn. Pl. Orient. 3: 48. 1843ContentDistribution Bibliography Distribution Eg Jo Sn Tu(A) Euro+Med not endemicA,B: Egypt nativeB; Jordan nativeC; Sinai nativeB; Turkey (Turkey, Asiatic part nativeA) Bibliography A. Davis, P. H. 1982: Flora of Turkey and East Aegean Islands 7 B. Täckholm, V. 1974: Students’ flora of Egypt, ed. 2. – Beirut C. Taifour, H. & El-Oqlah, A. A. 2017: The plants of Jordan. An annotated checklist. – Kew: Royal Botanic Gardens