Aubrieta columnae subsp. columnae

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1964, Flora Europaea - Volume 1. Lycopodiaceae to Platanaceae, Cambridge University Press : 295

(a) Subsp. columnae :

More or less caespitose, with slender stems; leaves oblong-spathulate usually entire; petals 11-17 mm; siliqua 5-12 x 2-4-5 mm; style 7-10 mm. • C. & S. Appennini.