Note 357 — Chapter II · HODDENTIN, THE POLLEN OF THE TULE, THE SACRIFICIAL POWDER OF THE APACHE; WITH REMARKS UPON SACRED POWDERS AND BREAD OFFERINGS IN GENERAL.
Reading edition
History of Mexico, Philadelphia, 1817, vol. 2, p. 79. See the additional note from Clavigero, which would seem to show that this etzalli was related to the espadaña or rush.