teosintes are species of Graminaceous S pertaining to kind Zea (kind which includes/understands only corn and the teosintes), originating in the Mexico and considered by certain scientists as the ancestors of the cultivated Maïs.
the section Zea which includes/understands only one species: Zea mays , itself subdivided in four subspecies, the corn and three teosintes annual:
The subdivision of the species Zea mays in subspecies is prone to debate, certain authors classifying the teosintes annual in six races: Nobogame, central Plate, Durango, Chalco, Balsas and Huehuetenango, instead of three subspecies.
All the species and subspecies of the kind Zea have the same number of Chromosome S (2n=20) except Zea perennis which is Diploïde (2n=40).
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