tlatlacizpatli.

an herb with leaves reminiscent of oregano and small white flowers; believed to be effective for a cough and for "fluxes from the head"

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), 142.