Webb, C. J., Sykes, W. R., Garnock-Jones, P. J., (1988). Flora of New Zealand, Volume IV: Naturalised pteridophytes, gymnosperms, dicotyledons, 1365 pp. Botany Division, DSIR, Christchurch, New Zealand. English language
Webb, C. J., Sykes, W. R., Garnock-Jones, P. J., (1988). Flora of New Zealand Volume IV: Naturalized Pteridophytes, Gymnosperms, Dicotyledons, 1365 pp. Department of Scientific and Industrial Research, Christchurch, New Zealand. English language