(Hedw.) Lindb.
A small, autoicous, acrocarpous moss which grows in open, often gravelly places sometimes on peaty soils in heathland, on marshy ground and also in rock crevices in coastal habitats. It is the most common of the Entosthodon species in Britain, much less of a calcicole than the others and more frequent in the uplands. It is a Submediterranean-Subatlantic species with a distinct western and northern distribution in Britain. Unlike Entosthodon fasciculare, which it resembles, it isn't really a species of arable fields and under the microscope, the leaves of Entosthodon obtusus have a border made up of elongated cells. It is found throughout Wales and it is thinly scattered in West Glamorgan. Sporophyte capsules are common from winter to summer.
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