Delgado, M.N., Azevedo, A.A., Silva, L.C., Valente, G.E. and Kasuya, M.C.M. (2011) “COMPARATIVE ANATOMY OF CALOLISIANTHUS SPECIES (GENTIANACEAE – HELIEAE) FROM BRAZIL: TAXONOMIC ASPECTS”, Edinburgh Journal of Botany, 68(1), pp. 139–155. doi:10.1017/S0960428610000284.