]> GH barcode-00247724 Mexico México "Chalco Race" Valley of Mexico: Rich, deep-soil maize field, 5.5 km. NNE of Los Reyes highway interchange on road to Texcoco, 2 km. SSW of Chilmalhuacoan turn-off at KM 24.5, W side of highway. Zea mays subsp. mexicana (Schrader) Iltis (Schrader) Iltis 2023-12-23 06:21:18 H. H. Iltis & J. F. Doebley