Primula vulgaris subsp. sibthorpii, (Hoffmanns.) W. W. Sm. & Forrest

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 : 16

(c) Subsp. sibthorpii (Hoffmanns.) W. W. Sm. & Forrest , loc. cit. (1928)

(P. sibthorpii Hoffmanns. ):

Lamina cuneate, contracted more or less abruptly into petiole, slightly pubescent beneath. Flowers usually red or purple. E. part of Balkan peninsula; Krym; locally naturalized in C. Europe.

White-flowered populations (P. komarovii Losinsk., Bull. Acad. Sci. URSS ser. 7,1933(2): 301 (1933)), which may be related to (b) and (c), are known from parts of S.E. Europe.