Onosma propontica, Aznav.

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 : 92

11. O. propontica Aznav. , Bull. Soc. Bot. Fr. 46: 145 (1899).

More or less caespitose perennial; flowering stems up to 50 cm, several, erect, much-branched, puberulent and patent-setose, the setae 1-3 mm. Lower leaves 40-50 x 5-7 mm, linear-spathulate, setose above, glabrous or sparsely puberulent between setae, puberulent beneath with setae on midrib and margin. Inflorescence much-branched; pedicels 5-8 mm in flower, up to 12 mm in fruit; bracts shorter than calyx. Calyx 10-15 mm in flower. Corolla c. 20 mm, pale yellow, glabrous but minutely papillose, 1i —2 times as long as calyx. Nutlets 3-4 mm, smooth. Turkey-in-Europe (IV. o f Istanbul). Tu.