Temnocalyx is a monotypic genus of flowering plants in the family Rubiaceae. It was originally described by Walter Robyns in 1928 and contained five species. Since then most of these species have been made synonym and currently only one species name remains valid, i.e. Temnocalyx nodulosa. The species is endemic to southwestern Tanzania.
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