Connor, H.E.; Edgar, E. 1987: Name changes in the indigenous New Zealand flora, 1960–1986 and Nomina Nova IV, 1983–1986. New Zealand Journal of Botany 25: 115–170.
Nordenstam, B. 1978: Taxonomic studies in the tribe Senecioneae (Compositae). Opera Botanica 44: 1–83.
Petrie, D. 1924: Descriptions of New Native Flowering-plants. Transactions and Proceedings of the New Zealand Institute 55: 95–98.