Herniaria fruticosa subsp. fruticosa

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 : 152

(a) Subsp. fruticosa :

Procumbent. Flowers in dense terminal clusters; purplish-black coloration, if present, restricted to small patches at base of sepals. Probably throughout the range o f the species.