Filago lutescens subsp. lutescens

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 : 122

(a) Subsp. lutescens :

Plant yellowish-green. Clusters of capitula (8-) 10-14 mm wide; involucral bracts yellowish, reddish-purple before anthesis. Throughout the range of the species except the Açores.