Meikle, R.D., Flora of Cyprus 2. 1985
but accepted names differing
1Bracts near apex of peduncle filiform, equalling or exceeding phyllaries and forming what appear to be an outer involucre; plant annual with a slender taproot
1'Bracts near apex of peduncle small, much shorter than the phyllaries and not forming an outer involucre; plant biennial or perennial with a thick, woody root