Lobelia barbata Lobelia ferruginea Siphocampylus barbatus Siphocampylus ferrugineus Siphocampylus regelii Siphocampylus regelii var. umbrosus Centropogon affinis var. costaricanus Centropogon barbatus Centropogon costaricanus var. cufodontidis Centropogon costaricanus Centropogon costaricanus var. tomentellus Centropogon ferrugineus var. glabrifilaris Centropogon ferrugineus var. jahnii Centropogon ferrugineus var. nitens Centropogon ferrugineus var. tomentellus Centropogon jahnii Centropogon poasensis Centropogon ferrugineus var. costaricanus
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024