8. Half the plants in a small F1 progeny of an R-g-li stock x Florida teosinte had narrow leaves, an unusual type of chlorophyll striping, and brown midribs. Neither of the parents showed this character. It seems possible that we have here a case of factor interaction between Zea and Euchlaena genes. Several crosses were made between the R-g-li stock and Florida teosinte, and only one of the F1 progenies showed this new character.