Meikle, R.D., Flora of Cyprus 2. 1985
but modified and accepted names differing
1Herbaceous annuals
1'Subshrubs with stems woody towards base
2Phyllaries glossy, bright yellow; capitula campanulate to broadly campanulate at anthesis, 4-9.5(-11,3) mm wide; plant not or scarcely aromatic
2'Phyllaries rather dull, straw-colored; capitula cylindric-campanulate or obpyramidal at anthesis, 3-4(-5) mm wide; plant strongly aromatic