(2007)  Page(s) 170.  
 
..in spite of the introduction of so many species in other chinampas since the sixteenth century, two chinampa districts, Xochimilco and Chalco, have mainly stood out for flower production, and in that respect they have been instrumental in the efforts to uproot the ancient religion. Cempoalxóchitl [Tagetes] flowers are the most significant flowers of the prehispanic world either as a gift for naristocrats or for religious altars. After the conquest the Spaniards brought the Castilla rose to compete with and displace these sacred flowers. This rose is associated with the cult of the Virgin of Guadelupe who appeared in the same place as the old Tonantzin, our mother for the natives, who had a temple on a mount three miles from Mexico to the north, according to Clavijero, where the sanctuary of the Virgin of Guadelupe is located at present.