Cerastium perfoliatum, L.

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 : 138

6. C. perfoliatum L. , Sp. Pl. 437 (1753) .

Glaucous, glabrous annual up to 50 cm. Leaves up to 40 mm, very narrowly elliptical to ovate-lanceolate, subacute, connate at base. Inflorescence furcate, with a dichasium of 2-7 flowers at the end of each branch; pedicels equalling or up to twice as long as sepals; bracts herbaceous. Sepals 9-11 mm, lanceolate, acute, with a scarious margin at apex; petals shorter than sepals, bifid at apex. Capsule twice as long as sepals, bent near apex; teeth deflexed. Seeds 1 -2- 1 - 5 mm, acutely tuberculate. 2« = c. 37. Black Sea region, from E. Bulgaria to near Rostov; S. & E. Spain. Bu Hs Rs (W, K, E).