Alcantarea (named for Dom Pedro d'Alcântara, second Emperor of Brazil) is related to the genus Vriesea of the botanical family Bromeliaceae, subfamily Tillandsioideae.
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