Native plant of Mexico, in the regions of Tamaulipas, Zacatecas, San Luis Guanajuato, Valley of Mexico, Veracruz and Oaxaca. It has abundant branches, with opposed leaves, pecioladas, triangular and gears, with white flowers that appear after rains. Cihuapahtli or grass of the parida one is also called, Leaf Santa
Its traditional use has been to favor the childbirth to even like abortifacient, since it increases the force of the uterine contractions, reason why also aid to prevent the hemorrhages post-childbirth. Some farmacológicos studies suggest produce changes in the levels of the progesterone reason why I could be a contraceptive