Ibyka is an extinct genus of Iridopteridales, and a possible ancestor to horsetails. The probable relationships within Equisetopsida are shown in the cladogram below. The position where Ibyka would be has been added.
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