Uebelmannia pectinifera subsp. flavispina Uebelmannia pectinifera subsp. pectinifera Uebelmannia pectinifera subsp. horrida Uebelmannia pectinifera subsp. eriocactoides
Uebelmannia pectinifera var. multicostata Uebelmannia pectinifera var. pseudopectinifera
World Flora Online, accessed June 20, 2024