Galium columella SynonymySource: Marhold, K. (2011+): Rubiaceae (pro parte majore). – In: Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.Galium columella Boiss., Fl. Orient. 3: 81. 1875ContentDistribution Bibliography Distribution ● Tn Euro+Med endemicA: Tunisia nativeA Bibliography A. Pottier-Alapetite, G. 1981: Flore de la Tunisie 2. – Tunis