Centropogon caninus var. hirsutulus Centropogon diocleus Centropogon gesnerioides Centropogon macrophyllus var. congestus Centropogon ovalifolius var. asperatulus Centropogon ovalifolius var. sneidernii
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024