Cinchona pubescens In the second trial, a picloram and metsulfuron solution was 100% successful in concentrations greater than 4% solution. In the third trial, picloram- metsulfuron solution of 10% concentrations or higher was successful in eradicating the tree. Cinchona pubescens Cinchona pubescens, also known as red cinchona and quina (Quechua) ( "Cascarilla, cinchona"; "quina-do-amazonas, quineira"), is native to Central and South America. It is known as a medicinal plant for its bark's high quinine content- and has similar uses to "Cinchona officinalis" in the production of quinine, most famously used for treatment of malaria. "C. pubescens" varies from small to large in
Schedula Romana treatment for malaria was found in the forests of the Andes in Peru. A such called fever tree, whose bark, made into powder and given as a beverage, cured the fevers and was known to have produced miraculous results in the local population. The bark was obtained from several species of the genus "Cinchona", of the Rubiaceae family. Popularized in Europe through the work of jesuits in America, the cinchona tree bark came to be known as Jesuit's bark. Perhaps the most prominent popularizer of the Jesuit's bark was a Spanish Jesuit Cardinal, Juan de Lugo. In 1643, Cardinal Lugo