This is a landrace corn from Mexico that I grew in 2020 for the Michiana Heritage Corn Project. Along with Chapalote, Nal-tel is one of the oldest Mexican corn varieties. The seed was sent to me by Stephen Smith. I began harvesting mature ears at the end of September.
Here is some additional information from Biodiversidad Mexicana
https://biodiversidad.gob.mx/diversidad/alimentos/maices/razas/grupo-tropicalesp/Nal_Tel