tzonpotonic.

a plant that produces a remedy for a cough, for stomach aches, or aching joints; it provokes sweating and expels wind; this plant was named by the people of Cholula

The Mexican Treasury: The Writings of Dr. Francisco Hernández, ed. Simon Varey, transl. Rafael Chabrán, Cynthia L. Chamberlin, and Simon Varey (Stanford: Stanford University Press, 2000), 147.