Silene alba subsp. eriocalycina

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 : 174

(c) Subsp. eriocalycina (Boiss.) Walters, Feddes Repert. 69: 48, (1964)

( Melandrium eriocalycinum Boiss. ):

Like (a) but calyx eglandular and seeds with acute tubercles. E. Mediterranean region. (S.W. Asia.)

Melandrium glutinosum Rouy , Bull. Soc. Bot. Fr. 41: 325 (1894), is recorded from Portugal and Spain. It is said to differ in its very viscid stems, its (often) pink flowers opening in the daytime, and its smaller capsule. The density of glandular-hairiness and the petal-colour of 5. alba vary elsewhere in the Mediterranean region, however, and the species needs further investigation.

Melandrium astrachanicum Paez. , Mém. Soc. Nat. Kieff 12 (1): 107 (1892), from south-east Russia (Astrakhan’), is said to differ in its smaller size, narrower leaves and eglandular calyx.