↑Robinson, H. 1983. A generic review of the tribe Liabeae (Asteraceae). Smithsonian Contributions to Botany 54: 1–69.
↑Brako, L. & J. L. Zarucchi. (eds.) 1993. Catalogue of the Flowering Plants and Gymnosperms of Peru. Monographs in systematic botany from the Missouri Botanical Garden 45: i–xl, 1–1286
