Tatianyx is a genus of plants in the grass family. The only known species is Tatianyx arnacites, native to the States of Bahia, Goiás, Mato Grosso, Minas Gerais, and Pará.
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