E. D.  Hatch, ?The New Zealand genera: 8. Acianthus, Townsonia, Genoplesium.?, New Zealand Native Orchid Group J., vol. no. 71, pp. 15 - 16 (1999) -, 1999.

K. M.  Cameron, Chase, M. W., Whitten, W. M., Kores, P., Jarrell, D., Albert, V., Yukawa, T., Hills, H., and Goldman, D. H., ?A Phylogenetic Analysis of the Orchidaceae: Evidence from rbcL Nucleotide Sequences?, American Journal of Botany, vol. 86, no. 2, pp. 208 - 224, 1999.

K. M.  Cameron, Chase, M. W., Whitten, W. M., Kores, P., Jarrell, D., Albert, V., Yukawa, T., Hills, H., and Goldman, D. H., ?A Phylogenetic Analysis of the Orchidaceae: Evidence from rbcL Nucleotide Sequences?, American Journal of Botany, vol. 86, no. 2, pp. 208 - 224, 1999.