Phaenanthoecium is a genus of plants in the grass family. The only known species is Phaenanthoecium koestlinii, native to Northeast Tropical Africa (Sudan, Ethiopia and Eritrea) and Yemen.
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