There was one illustrations found for G.L. Keultjes
Mollinedia sp.Bot. Jahrb. Syst., vol. 27 : t. 9 (1900) [J. Pohl]
2 327500 Dendrobium mutabile (Blume) Lindl. [80 716580 Onychium mutabile Blume]Naturalis: () [G.L. Keultjes]
Mollinedia sp.2 327500 Dendrobium mutabile (Blume) Lindl. [80 716580 Onychium mutabile Blume]