The year 2001 marked the centennial arrival of the most Famous 20th century botanist and explorer in Peru, August Weberbauer. To honor this occasion, a brief account is presented of his botanical contributions to the area in northern Peru that has been established as a national park. In this area, Weberbauer collected nearly 57 collection numbers, of which approximately 50% are type material, and at least four of which represent taxa still only known from the type.