Macxochitl seems to be a variant spelling; see the Florentine Codex, Book 11, folio 198v., which has several examples.
Sahagún, Bernardino de, Antonio Valeriano, Alonso Vegerano, Martín Jacobita, Pedro de San Buenaventura, Diego de Grado, Bonifacio Maximiliano, Mateo Severino, et al. Historia general de las cosas de Nueva España (Florentine Codex), Ms. Mediceo Palatino 218–20, Biblioteca Medicea Laurenziana, Florence, MiBACT, 1577. Available at Digital Florentine Codex/Códice Florentino Digital, edited by Kim N. Richter, Alicia Maria Houtrouw, Kevin Terraciano, Jeanette Peterson, Diana Magaloni, and Lisa Sousa, bk. 11, fol. 198v. Los Angeles: Getty Research Institute, 2023. https://florentinecodex.getty.edu/en/book/11/folio/198v/images/0 . Accessed 30 November 2025.
The Matrícula de Huexotzinco of 1560 includes Nahuatl hieroglyphs for several people who held the name Maxochitl. Searching the word maxochitl will bring up several examples which seem to show hand-held flower bouquets.
Visual Lexicon of Aztec Hieroglyphs, ed. Stephanie Wood (Eugene, Ore.: Wired Humanities Projects, University of Oregon, ©2020-present). https://aztecglyphs.wired-humanities.org/