Helichrysum rupestre is a taxon synonym of three species of Helichrysum: Helichrysum rupestre Boiss. = Helichrysum pendulum Helichrysum rupestre D.C. = Helichrysum panormitanum subsp. panormitanum Helichrysum rupestre Guss. ex Nyman = Helichrysum saxatile subsp. saxatile