acaxochitl.

Headword: 
acaxochitl.
Principal English Translation: 

an aquatic flower that comes in red or white, with many petals, a tuberous base with green foliage; of the lobelia family

Attestations from sources in English: 

See an image that represents acaxochitl in the Visual Lexicon of Aztec Hieroglyphs, ed. Stephanie Wood (Eugene, Ore.: Wired Humanities, 2020-present).

As shown in the Codex Mendoza, the acaxochitl is a large, bright red flower. See entries for Acaxochic and Acaxochitlan, for example.

reed flowers (late sixteenth century, Tetzcoco?)
Ballads of the Lords of New Spain: The Codex Romances de los Señores de la Nueva España, transcribed and translated by John Bierhorst (Austin: University of Texas Press, 2009), 32.

themes: 
Flowers
Plants, Trees, Flora