Calycosia is a genus of flowering plants in the Rubiaceae family. It was described by Asa Gray in 1860. The genus is found in New Guinea, the Solomon Islands, Fiji, Samoa, and the Society Islands.
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