Suplemento á la quinología (Hipólito Ruiz and Josef Pavón, Madrid 1801)

The 1801 continuation of the first Spanish monograph on cinchona: new species collected in the Peruvian Andes by Juan Tafalla, the first printed description and plate of the quina naranjada of Santa Fé, and an open answer to the school of Mutis arguing that the northern barks were inferior to those of Loxa and Peru. It is a botanical supplement and a priority quarrel bound together, and it prints the praise of its opponent alongside the attack on him.