[1]
G. Carnevali, W. Cetzal-Ix, J. L. Tapia-Muñoz, and G. A. Romero-González, “The world upside down: the first <em>Kefersteinia </em>(Orchidaceae: Zygopetalinae)<em> </em>with non-resupinate flowers”, Phytotaxa, vol. 239, no. 2, pp. 165–173, Dec. 2015.