Meikle, R.D. 1977: Flora of Cyprus 1Tutin, T.G., Burges, N.A., Chater, A.O., Edmondson, J.R., Heywood, V.H., Moore, D.M., Valentine, D.H., Walters, S.M. & Webb, D.A. 1993: Flora Europaea 1, ed. 2
but modified
1Leaves up to 3 mm wide, linear; petals 3-4 mm long
1'Leaves more than 3 mm wide, lanceolate; petals 7-8 mm long