2.8. 12. Rhynchophora Arènes, Notul. Syst. (Paris) 12: 127. 1946.

= Calyptostylis Arènes, Notul. Syst. (Paris) 12: 131. 1946. Type species: Calyptostylis humbertii Arènes (= Rhynchophora phillipsonii W. R. Anderson).

Type species.

Rhynchophora humbertii Arènes.

Notes.

Rhynchophora comprises only two currently accepted species (all threatened species; Suppl. material 1) of lianas endemic to the seasonally dry tropical forests of Madagascar, Africa (POWO 2024). For an identification key for all species of Rhynchophora, see Anderson (2001 a). Despite Madagasikaria causing the non-monophyly of Rhynchophora (Fig. 1), the bootstrap support value for this clade is below 60 %. Therefore, we have chosen to retain both genera as independent until further phylogenetic evidence sheds some light on the matter.