Tortella bambergeri (Schimp.) Broth. in the British Isles

Abstract

The moss Tortella bambergeri (Schimp.) Broth. is added to the described British bryophyte flora. It differs from fragile-leaved forms of T. tortuosa (Hedw.) Limpr. in having the apical quarter of the costa with quadrate, papillose abaxial cells and in having the peristome teeth twisted by a half turn instead of one and a half turns. Other identification features are discussed, and the habitat and distribution of T. bambergeri in Britain are described. Most records are from sandstone boulders in western Britain.