Dendrobium pluricostatum Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1912) 557; 21 (1923) t. 187, fig. 702.
Type: Schlechter 19269 (holo B, lost; iso AMES, BO, E, G, K, L, NSW).
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Dendrobium hosei Ridl. var. pelor Carr, Gard. Bull. Straits Settlem. 5 (1929) 125, pl. 1, fig. 5.
Type: Ridley s.n. (Malay Peninsula, Tahan R.) (SING); Hose s.n. (Sarawak).