859712 6166 Acaena pinnatifida Ruiz & Pavon W.H. Emory, Rep. U.S. Mex. Bound., vol. 2(1): (Botany of the boundary): t. 19 (1859)
 
2069962 6166 Acaena pinnatifida Ruiz & Pavon G Macloskie, Reports of the Princeton University expeditions to Patagonia, 1896-1899, vol. 8, Botany, vol. 2 : t. 19 (1903) [F. v. Itterson]