Horkelia bernardina Horkelia bolanderi var. parryi Horkelia rydbergii Horkelia bolanderi subsp. parryi Potentilla bolanderi var. rydbergii Potentilla bolanderi var. bernardina Potentilla bolanderi var. parryi Horkelia parryi
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024