Posoqueria coriacea M.Martens & Galeotti [ Posoqueria formosa (Karsten) Planchon]
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Posoqueria coriacea [Posoqueria formosa (Karsten) Planchon] [Rubiaceae]
J. Paxton, J. Lindley, Paxton’s Fl. Gard., vol. 1 : p. 185, fig. 114 (1853)