homotypic synonyms:
Rhynchospora longiflora variety subcostata (C.B. Clarke) Kük.;
protologue: Kew Bull., Addit. Ser. 8: 54 (1908)
2 641784 Mapania longiflora C.B. Clarke
C.B. Clarke, Ill. Cyper.: t. 110, fig. 7-13 (1909)
Rhynchospora longiflora variety subcostata (C.B. Clarke) Kük.;
protologue: Kew Bull., Addit. Ser. 8: 54 (1908)
2 641784 Mapania longiflora C.B. ClarkeC.B. Clarke, Ill. Cyper.: t. 110, fig. 7-13 (1909)