Status in Britain: Red Data Book
Additional: Biodiversity Key Species

This is a drought-tolerant moss occurring on rock and soil on South-facing slopes. Common in Mediterranean regions, it has only ever been recorded at 4 sites in the UK, two of these in Wales. The population at one of the Welsh sites (Breidden Hill in Montgomeryshire) is now almost certainly extinct, destroyed by quarrying.

Pale to bright green in colour, its leaves are long and tapering to fine points, with toothed margins in the upper part. Its capsules are globose and highly symmetrical. It is closely related to the much commoner Bartramia pomiformis, which differs in fruit by its assymetrical capsules.