M.W.Chase & N.H.Williams (Booth ex Lindl.) 2009 - Chase MW, Williams NH, Faria ADD, Neubig KM, Amaral MDCE, Whitten WM (2009) Floral convergence in Oncidiinae (Cymbidieae; Orchidaceae): an expanded concept of Gomesa and a new genus Nohawilliamsia. Annals of Botany 104: 387-402. doi: 10.1093/aob/mcp067.