Species concepts over time in Asian and Australian Gymnosiphon. Names shaded with the same color represent synonyms of the same species according to Jonker (1938). The two taxa named by Tuyama (1940) were not included in this study. The synonymy of G. nana (nanus) is based upon World Plants Online (2020).

 
 
  Part of: Nickrent DL (2020) Gymnosiphon syceorosensis (Burmanniaceae), the second new species for the Philippines. PhytoKeys 146: 71-87. https://doi.org/10.3897/phytokeys.146.48321