Early ampelographical research into Sangiovese begun in 1906 with the work of Girolamo Molon. Molon discovered that the Italian grape known as “Sangiovese” was actually several “varieties” of clones which he broadly classified as Sangiovese Grosso and Sangiovese Piccolo. The Sangiovese Grosso family included the clones growing in the Brunello region as well as the clones known as Prugnolo Gentile and Sangiovese di Lamole that was grown in the Greve in Chianti region. The Sangiovese Grosso, according to Molon, produced the highest quality wine, while the varieties in the Sangiovese Piccolo family, which included the majority of clones, produced wine of a lesser degree of quality. In the late 20th century, research by the Italian government and Chianti Classico Consorizo discovered that some of the best producing clones, from a wine quality perspective, came from the Emilia-Romagna region where they are today being propagated under the names R24 and T19.