Papel Amate, or painted bark paper, is an art form with clear pre-Hispanic origins. Originally, traditional bark paper was considered a specialty of the village shaman and used only for special rituals.
Diego Rivera was a prominent Mexican painter. His large frescoes helped establish the Mexican Mural Movement in Mexican art. Diego River was Frida Kahlo's former spouse. Of of his famous painting is "Nude With Calla Lilies," which was painted in 1944. You see the back of a nude woman who seems to be hugging it gathering her flowers. SOURCE: http://www.diegorivera.org/nudecalla.jsp