Anatomy and essential oil composition of the underground systems of three species of Aldama La Llave (Asteraceae) - Bombo, Aline Bertolosi; Oliveira, Tuane Santos de; Oliveira, Adriana da Silva Santos de; Rehder, Vera Lúcia Garcia; Appezzato-da-Glória, Beatriz (Journal of the Torrey Botanical Society, 2014)