Santolina chamaecyparissus subsp. chamaecyparissus

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 145

(a) Subsp. chamaecyparissus :

Very variable in habit. Leaves grey- to white-tomentose; lobes not more than 2 mm. Involucre usually tomentose; florets deep yellow. Pyrenees to N.W. Italy.