Photo, picture:
Scharfer Mauerpfeffer, die Blueten werden gerne von Hautflueglern besucht - (Vogelbrot - Foto Scharfer Mauerpfeffer in Bluete)
Goldmoss Stonecrop, the flowers are often visited by hymenopterous insects - (Goldmoss Sedum - Photo Goldmoss Stonecrop blooming)
Sedum acre

Gallery overview