Aiton, W. 1789: Hortus Kewensis; or a catalogue of the plants cultivated in the Royal botanic gardens at Kew. Hortus Kewensis. Vol. 1. Nicol, London.
Hobbs, J.; Hatch, T. 1994: Bulbs for New Zealand Gardens. Godwit Press, Auckland.
Mabberley, D.J. 2008: Mabberley's plant book, a portable dictionary of plants, their classification and uses. Edition 3. Cambridge University Press.