Tags: Moss.
Thamnobryum angustifolium (Derbyshire feather-moss) is a species of moss in the Neckeraceae family. It is endemic to Derbyshire England being restricted to a single SSSI where the main colony covers about 3 square metres (32 sq ft) of a single rock face with small subsidiary colonies nearby. Threats include disturbance from cavers and climbers collection by bryologists pollution of the spring in which it grows and desiccation during periods of drought. Its natural habitat is rivers.