Rhodax italicus subsp. rupifragus Rhodax ambiguus Rhodax rupifragus Helianthemum ambiguum Helianthemum rupifragum Helianthemum cretaceum Helianthemum cretophilum Helianthemum skericense Helianthemum italicum var. cretaceum
Taxonomic data from World Flora Online, accessed June 20, 2024