Four archaeological sites corresponding to the late pre-hispanic period of the Córdoba saws (ca. 1000-300 AP): Locust beans 1, Puesto La Esquina 1 (Pampa de Olaen), C.Pun.39 and Las Chacras 2 (Valle de Punilla) were studied on the basis of their palinological content. The locust beans 1 and Puesto La Esquina 1 had insufficient pollen content as a result of taphonomic biases. By contrast, the political associations of C.Pun.39 and Las Chacras 2 allowed the inference of paleo-plant communities dominated by Chenopodiaceae-Amaranthaceae and Brassicaceae (C.Pun. 39) and for the first taxon (Las Chacras 2). The two plant families have low representation in the current pollen rainfall. It is suggested that the significant proportions of Chenopodiaceae-Amaranthaceae may be suggesting the presence of prehispanic cultures of Chenopodium quinoa and Amaranthus caudatus in the vicinity of the sites. Other evidence of macro and micro-residues linked to crops supports this hypothesis. The important proportions of both Chenopodiaceae-Amaranthaceae and Brassicaceae recorded in C.Pun.39 are also analysed as indicative of successive abandonments and reoccupations of the sites, consistent with a pattern of high residential mobility among the late prehispane groups. Environments disturbed by anthropic activity would have contributed to the development of such plants.Four Archaeological sites dating from the Late Prehispanic Period of the Sierras de Córdoba (ca. 1000-300 BP) are studied by means of technical analysis. These sites are The locust beans 1, Puesto La Esquina 1 (Pampa de Olaen), C.Pun.39 and Las Chacras 2 (Punilla valley). Locust beans 1 and Puesto La Esquina 1 sites present scarce pollinic grains as a consequence of taphonomic bias. However, from the pollinic spectrum from C.Pun.39 and Las Chacras 2 sites it was possible to infer vegetational paleo-communities dominated by Chenopodiacea – Amaranthaceae and Brassicaceae (at C.Pun.39 site) and by the former taxon (at Las Chacras 2 site). There is a presence of both vegetable families in current pollinic samples. It is felt that the high proportions of Chenopodiacea – Amaranthaseae might supposing the presence of pre-Hispanic Chenopodium quinoa and Amaranthus caudatus crops in the areas surrendering the sites. Further evidence, such as domestic plant remains and agricultural tools, supports this hypothesis. Nevertheless, the high proportions of Chenopodiaceae-Amaranthaceae and Brassicaceae found in C.Pun.39 would also indicate successful abandonment and rehabilitation processes at the residential camps, approved seisonally. Environmentments affected by anthropic activity might have contributed to the growth of these plants.