Aster willkommii, Schultz Bip.

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 : 115

16. A. willkommii Schultz Bip. , Flora (Regensb.) 34: 742 (1851).

Densely greyish-setulose and glandular perennial 5-45 cm. Basal and lower cauline leaves lanceolate-spathulate, entire, petiolate, the upper sessile. Capitula in lax corymbs or panicles, or solitary. Involucral bracts in 3 rows, the outer more shortly acute than the inner. Ligules 10-20, violet, sometimes absent. Pappus-hairs unequal. • Mountains of E. & S.E. Spain. Hs. Less hairy plants from the N. part of the range, which have numerous capitula, have been separated as A. catalaunicus Willk. & Costa, Linnaea 30: 104 (1859), but they are connected by intermediates with typical A. willkommii with 1 or few capitula.