Ionidium bicolor Ionidium bicolor f. hirsuta Hybanthus bicolor var. genuinus Ionidium paraguariense var. balansae Hybanthus bicolor var. lobelioides Ionidium bicolor var. lobelioides Solea bicolor Hybanthus bicolor Ionidium bicolor var. genuinum
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024