Roalson, E. H., Boggan, J. K. and Skog, L. E. (2005) “Reorganization of Tribal and Generic Boundaries in the Gloxinieae (Gesneriaceae: Gesnerioideae) and the Description of a New Tribe in the Gesnerioideae, Sphaerorrhizeae”, Selbyana, 25(2), pp. 225–238. Available at: https://journals.flvc.org/selbyana/article/view/121474 (Accessed: 16 September 2026).