Hieracium calcareum

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 : 401

208. H. calcareum group ( H. illyricum Fries ; H. laevigatum / porrifolium ). Stems 20-80 cm, glabrous or with a few stellate hairs above. Leaves glabrous or with few to numerous simple eglandular hairs beneath; basal 20-120 x 5-15 mm, narrowly to broadly lanceolate, acute to long-acuminate, denticulate to dentate; cauline 3-15, like the basal or narrower, gradually becoming smaller up the stem. Capitula 1 -numerous; peduncles with numerous stellate hairs especially near apex. Involucre 10-13 x 9-11 mm; bracts acute, with numerous stellate hairs, sometimes with a few simple eglandular or glandular hairs, or with both. Stigmas discoloured. • Alps. Au He It Ju.

Included species:

H. calcareum Bernh. ex Hornem. , Hort. Hafn. 2: 762 (1815). It.