Gymnocactus ysabelae Thelocactus ysabelae Turbinicarpus saueri subsp. ysabelae Pediocactus ysabelae Thelocactus ysabelae var. brevispinus Turbinicarpus ysabelae var. brevispinus Gymnocactus ysabelae var. brevispinus Neolloydia knuthiana var. ysabelae
Taxonomic data from World Flora Online, accessed June 20, 2024