The objective of this research was to describe and differentiate the stages of species of the genus Ipomoea in the irrigated area of Rio Dulce - Santiago del Estero - Argentina, under different growth stages. Species prototypes from the area were mounted in a herbarium, photographed and then identified with detailed descriptions of the seed, seedling and mature stages. A classification key was constructed to identify them under different growth stages. Eight species in the genus Ipomoea: (I. alba, I. amnicola, I. cairica, I. carnea, I. grandifolia, I. nil, I. purpurea and I. quamoclit) were registered, some cultivated as ornamental, while others appear naturally or as crop weeds in the region.
weeds; naturally; seed; seedling; mature stage
