Achillea clypeolata, Sibth. & Sm.

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 : 165

46. A. clypeolata Sibth. & Sm. , FI. Graec. Prodr. 2: 193 (1813).

Shortly tomentose. Stems up to 60 cm, erect, simple. Leaves pinnatisect, plane, weakly glandular-punctate; basal up to 15 cm, petiolate, the lobes ovate, serrate to pinnatifid, with acute teeth; cauline all more or less distant, about twice as long as the internodes, the upper 1-2 cm, sessile. Corymbs with many capitula; peduncles c. 2 mm, tomentose. Involucre c. 3 mm in diameter; bracts c. 1 -5 mm. Ligules c. 1 mm, yellow. 2л= 18 + 0-1 B. • Balkan peninsula, extending to S.E. Romania. Al Bu Gr Ju RmTu.

Several species described from Bulgaria are close to 46 and are probably of hybrid origin. A. vandasii Velen. , FI. Bulg. 265 (1891) (?46 x 48), is sometimes smaller in the vegetative parts; A. stojanoffii Prodan , Bui. Acad. Stud. Agron. Cluj 1: 48 (1930), has larger involucres and sometimes white ligules; A. serbanii Prodan , op. cit. 2: 30 (1931) is the hybrid A. stojanoffii x 32(b).