Laserpitium halleri subsp. halleri

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1981, Flora Europaea. Volume 2. Rosaceae to Umbelliferae, Cambridge University Press : 370

(a) Subsp. halleri :

Pubescent; hairs on leaves and petioles often in small groups; leaf-lobes usually ovate in outline; bracts ciliate; bracteoles lanceolate; sepals usually ciliate. Alps.