Principal English Translation:
spirulina, a blue-green algae that is gathered, made into cakes, cooked over coals, and eaten as tostadas (Florentine Codex); or a foam with a plant origin that people collected from lakes (GDN)
Digital Florentine Codex/Códice Florentino Digital, edited by Kim N. Richter and Alicia Maria Houtrouw, "Book 11: Earthly Things", fol. 69r, Getty Research Institute, 2023. https://florentinecodex.getty.edu/en/book/11/folio/69r Accessed 28 October 2025. See also the Gran Diccionario Náhuatl, citing Wimmer 2004, "Ecume d'origine végétale recueillie sur la lagune." https://gdn.iib.unam.mx/diccionario/acuitlatl Translated to English here by Stephanie Wood.