A new species of the endemic genus Centaurodendron Johow (Asteraceae, Centaureinae) from Alejandro Selkirk Island, Juan Fernández Archipelago, Chile oleh Diego N. Penneckamp, Alfonso Susanna, Nuria Garcia-Jacas, Gloria Rojas, Lukas Mekis, Tod F. Stuessy, Carlos M. Baeza, Patricio Novoa, Philippe Danton, Christophe Perrier