Mediocalcar uniflorum Schltr. var. orientale Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1911) 228
Type: Schlechter 19584 (syn B, lost; lecto BM, chosen by Schuiteman 1997; iso AMES, BO, K, L)
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Mediocalcar rigidulum Schltr., Repert. Spec. Nov. Regni Veg. 16 (1919) 118
Type: Kempter s.n. (Kaiser Wilhelmsland, area behind Vanimo) (holo B, lost)
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Mediocalcar sepikanum Schltr., Bot. Jahrb. Syst. 58 (1922) 68
Type: Ledermann 9894 (holo B, lost; lecto L, chosen by Schuiteman 1997; iso K)