A little herb from central Peru is recognised as a new species of a new genus. Centenaria rupacquiana belongs to the tribe Eupatorieae, subtribe Piqueriinae. It has asymmetrical corollas with two inner lobes smaller, a flat and epaleaceous receptacle and the presence of pappus. In Peru, Centenaria is related to the genera Ferreyrella and Ellenbergia, but Ferreyrella is different by having no pappus and a paleate receptacle; and on the other hand, Ellenbergia is different by having symmetrical corollas.
Gonzáles, P., Cano, A., & Robinson, H. (2018). A new genus of Compositae (Eupatorieae, Piqueriinae) from Peru, named Centenaria to honour the 100th anniversary of the Natural History Museum of the National University Mayor of San Marcos. PhytoKeys, (113), 69-77. https://doi.org/10.3897/phytokeys.113.28242