Richard J. Waterman, Anton Pauw, Timothy G. Barraclough, and Vincent Savolainen. 2009. "Pollinators underestimated: A molecular phylogeny reveals widespread floral convergence in oil-secreting orchids (sub-tribe Coryciinae) of the Cape of South Africa". Molecular Phylogenetics and Evolution51(1):100-110. doi:10.1016/j.ympev.2008.05.020.
Benny Bytebier, Timotheűs van der Niet, Dirk U. Bellstedt, and Hans Peter Linder. 2008. "The phylogenetic position of the enigmatic orchid genus Pachites". South African Journal of Botany74(2):306-312. doi:10.1016/j.sajb.2008.01.002.
