Accepted By:
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AFPD. 2008. African Flowering Plants Database - Base de Donnees des Plantes a Fleurs D'Afrique.
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Kårehed, J. & B. Bremer. 2007. The systematics of Knoxieae (Rubiaceae)-molecular data and their taxonomic consequences. Taxon 56(4): 1051-1076.
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