Horkeliella pinetorum Potentilla purpurascens var. pinetorum Ivesia purpurascens Horkeliella purpurascens Horkelia purpurascens var. pinetorum Horkelia pinetorum Horkelia purpurascens Ivesia purpurascens subsp. typica
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024