Siphocampylus rugosus Siphocampylus roseus Siphocampylus radicans Siphocampylus coccineus var. leucostomus Centropogon coccineus var. leucostoma Centropogon radicans Siphocampylus coccineus
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024