Sideritis syriaca, L.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1972, Flora Europaea. Volume 3. Diapensiacea to Myoporaceae, Cambridge: Cambridge University Press : 142

21. S. syriaca L. , Sp. Pl. 574 (1753)

(inch S. eretica Boiss. , non L., 5. raeseri Boiss. & Heldr., 5. sicula Ucria , S. taurica Stephan ex Willd. ).

Grey- or white-lanate perennial 10 -50 cm. Lower leaves 10-60 x (5-)6-20 mm, oblong to narrowly obovate, entire, crenulate or denticulate; middle and upper leaves up to 80 x 18 mm, linear-lanceolate or oblong, entire. Verticillasters 5-20, 6- to 10-flowered, mostly distant, rarely all crowded. Middle bracts 6-12 mm (including acumen), usually shorter than or equalling flowers, suborbicular; acumen 2-3 mm. Calyx 7-12 mm; teeth 2-5-5 mm, half as long to almost as long as tube. Corolla 9-15 mm, yellow. 2« = 24. Mountain rocks. S. Europe, from Sicilia to Krym. Al Bu Cr Gr It Ju Rs (K.) Si.

A variable species, usually divided into several species and subordinate taxa. Within a restricted part of its range it is often possible to distinguish many of the local populations from each other, but when the whole range of variation is taken into consideration no satisfactory subdivision seems possible.