Sedum hirsutum subsp. hirsutum

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 : 361

(a) Subsp. hirsutum :

Leaves not more than 10 mm; cyme with not more than 15 flowers; petals not more than 6x2-5 mm, usually with a red mid-vein, free or scarcely united at the base; styles straight. Throughout the range o f the species.