Sedum anglicum can be distinguished from sedum album, the other white-flowered stonecrop, by its flowers, which are arranged in small numbers just above the leaves, rather than in a branched umbel well above the leaves.
Main flower color:
All the UK; least common inland and across high elevation regions, most common close to the western coasts
Up to 5 cm
Beach margins, old walls, sea cliffs, rocky outcrops, dry grassland
White, up to 12 mm in diameter, with five white petals, often pinkish below. Produced singly or in small clusters, amongst or only slightly above the leaves. Plants form low, spreading mats
Alternate, ovate to egg-shaped, greyish-green or reddish-tinged, up to 5 mm long
June to September