Lindernia dubia (L.) Pennell [ Lindernia pyxidaria L.]
      
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6 607702 Lindernia dubia (L.) Pennell [125 479091 Gratiola dubia L.] Scrophulariaceae
J. Sturm, E.H.L. Krause, K.G. Lutz, Deutschl. Fl., ed. 2, vol. 10 : t. 31 (1903)