1. The genus Iphiona (Compositae-Inuleae);Anderberg;Nordic. J. Bot.,1985
2. The genus Pegolettia (Compositae, Inuleae);Anderberg;Cladistics,1986
3. Miocene fossil plants from northern Peru;Berry;Proc. U. S. Natl. Mus.,1919
4. Contributions to the paleobotany of Peru, Bolivia and Chile: The flora of the Concepcion-Arauco coal measures of Chile;Berry;Johns Hopkins Univ. Stud. Geol.,1922a
5. Contributions to the paleobotany of Peru, Bolivia and Chile: Pliocene fossil plants from eastern Bolivia;Berry;John Hopkins Univ. Stud. Geol.,1922b