Centaurea alba subsp. subciliaris

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 : 289

(t) Subsp. subciliaris (Boiss. & Heldr.) Dostál , Bot. Jour. Linn. Soc. 71: 205 (1976)

( C. subciliaris Boiss. & Heldr. ):

Perennial. Stems 10-15 cm, sparingly and divaricately branched at the base. Leaves appressed arachnoid-hairy, green; lower oblong-spathu-

late, long-attenuate into the petiole, undivided or lyrately lobed with 2-4 minute lobes on each side. Involucre 6-10 mm in diameter, ovoid; appendages covering bracts, large, orbicular, pale yellow, with large, pale brown central spot, the margin membranous, hyaline, denticulate, the apex aristate. Florets pink. Achenes c. 3 mm; pappus | as long as achene. Montane regions. • W. Greece (Kefalinia).

C. huljakii H. Wagner , Feddes Repert. 38: 287 (1935), from rocks at c. 600 m in N. Greece (Athos), is like subsp. (q) but is a perennial with white-tomentose 2- to 3-pinnatisect leaves and the involucre is c. 6 mm; it is perhaps another subspecies.

C. sanctae-annae H. Wagner , op. cit. 288 (1935), is probably the hybrid 167 x 141.

C. haynaldiformis Prodan , Anal. Acad. Rep. Pop. Romàne 3(18): 691 (1950), from W. Romania (Arad region), with erect stems, lanceolate, entire leaves, involucre 20-22 mm in diameter and orbicular appendages with a black central spot and wide, yellowish, entire or weakly lacerate margin, requires further investigation.