Siamanthus is a genus of plants in the ginger family, Zingiberaceae. It contains only one known species, Siamanthus siliquosus, endemic to Thailand and first described in 1998.
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