The subtribal classification of the Diseae (Orchidoideae) is reviewed in light of the available morphological, leaf
anatomical, and palynological data. These data are critically assessed, and the more prominent features are illustrated.
The data are analyzed cladistically, and the robustness of the various components of the most parsimonious tree is
assessed by a bootstrap analysis. Based on the cladistic analysis and the bootstrap analysis, a new classification is
proposed for the Diseae. The results of the bootstrap analysis are used to establish the nodes at which formal taxa
should be recognized. This classification recognizes five monophyletic subtribes: the Satyriinae, Disinae, Brownleeinae
(a new subtribe), Huttonaeinae, and Coryciinae. It is suggested that Brownleea, the only genus of the Brownleeinae,
may be of hybrid origin, as it shares the autapomorphies of the Disinae and Coryciinae. Huttonaea is shown to be
more closely related to the Diseae than to the Orchideae, and is consequently included as a subtribe of the Diseae.
The new classification is formally presented, and a key to the genera is provided
