Blunt-leaved bristle-moss Orthotrichum obtusifolium

Status Red - Endangered & Critically Endangered
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A endangered moss.

Blunt-leaved bristle-moss grows on elm and sycamore trees.


This moss is now restricted to one site in the north-east of Scotland. It was once more widespread in Britain, but many populations were lost to air pollution from sulphur dioxide and Dutch Elm disease.


The bark of elm and sycamore trees.

Key threats

Although levels of sulphur dioxide have now decreased, Dutch Elm disease remains a serious threat. It is listed as Endangered in the British Red Data book and is protected by Schedule 8 of the Wildlife and Countryside Act 1981.