Dendrobium cadetioides Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1912) 467; 21 (1923) t. 156, fig. 587.
Type: Schlechter 19505 (holo B, lost; iso AD, AMES, BO, G, K, L 2x, NSW, S).
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Dendrobium connexicostatum J.J.Sm., Nova Guinea 18 (1935) 39, pl. 8, 21.
Diplocaulobium connexicostatum (J.J.Sm.) P.F.Hunt & Summerh., Taxon 10 (1961) 108.
Type: Docters van Leeuwen 10377 (holo L).