Myrmephytum

Myrmephytum is a genus of myrmecophytic flowering plants in the family Rubiaceae. It is distributed from central Malesia to New Guinea.
It is one of five ant-plant genera in the family Rubiaceae, the others being "Anthorrhiza", "Hydnophytum", "Myrmecodia", and "Squamellaria".
Species.
The following list of 5 species is sourced from The Plant List.