Cephalaria squamiflora subsp. squamiflora

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 : 57

(b) Subsp. squamiflora (C. sieberi Szabó ): Young leaves often orbicular. Teeth of mature leaves not ciliate. Involucral bracts acute. Involucel with 4 short teeth on the angles and 4 very short intermediate teeth. Kriti, Karpathos.