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Perthshire beardmoss
Scientific classification
Kingdom:	Plantae
Division:	Bryophyta
Class:	Bryopsida
Subclass:	Dicranidae
Order:	Pottiales
Family:	Pottiaceae
Genus:	Didymodon
Species:	D. mamillosus
Binomial name
	Didymodon mamillosus; (Crundw.) M.O.Hill

Didymodon mamillosus, commonly known as Perthshire beardmoss,^[2] is a species of moss endemic to Europe. It occurs at only five sites including one in Scotland where it is classified as "Critically Endangered". The other sites are in Iceland, Germany, the Czech Republic and in north-east Spain.^[3]

Named as a new species by Alan Crundwell in 1967, the Scottish site at Kirkton Glen in Perthshire was found again in 1998 by Nick Hodgetts. Jan Kucera, working in Bohemia considers it to be a form of D. rigidulus.^[4]^[5]

References

^ "The Scottish Biodiversity List - Species & Habitat Detail" BiodiversityScotland. Retrieved 20 May 2008. Archived October 22, 2007, at the Wayback Machine
^ Edwards, Sean R. (2012). English Names for British Bryophytes. British Bryological Society Special Volume. Vol. 5 (4 ed.). Wootton, Northampton: British Bryological Society. ISBN 978-0-9561310-2-7. ISSN 0268-8034.
^ "Moss Species Action Plan US8" Archived September 4, 2004, at the Wayback Machine (2001) (pdf) Stirling Council. Retrieved 16 May 2008.
^ "Didymodon mamillosus : (Perthshire Beard Moss)" Archived September 25, 2006, at the Wayback Machine (2002) (pdf) UK Biodiversity Action Plan. Retrieved 20 May 2008.
^ "Species and Habitat Action Plan Assessment Form" Archived September 25, 2006, at the Wayback Machine (2002) (pdf) UK Biodiversity Action Plan. Retrieved 20 May 2008.