Tanacetum corymbosum subsp. corymbosum

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 : 171

(a) Subsp. corymbosum :

Leaves shining green beneath, the segmentsdentate; involucral bracts with a narrow, light brown margin; ligules 10-15 mm. 2л = 36. Throughout the range of the species.