New Zealand Plant Names Database
Cronquist, A. 1988: The evolution and classification of flowering plants. New York, The New York Botanic Gardens.
Mabberley, D. J. 2008: Mabberley's plant book, a portable dictionary of plants, their classification and uses. 3rd ed. Cambridge University Press. 1021 p.
NZFLORA February 2012
Accessed via http://www.gbif.org/species/117074792 on 2014-10-21