Dialypetalum is a genus of plants endemic to Madagascar. It differs from other Lobelioideae in having regular (actinomorphic) flowers with virtually free petals, and in being dioecious. It contains the following species, accepted as of July 2014:..
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0