Didymodon mamillosus explained

Didymodon mamillosus, commonly known as Perthshire beardmoss,^[1] 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.^[2]

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.^{[3] [4]}

Notes and References

1. Book: Edwards, Sean R.. 2012. English Names for British Bryophytes. Wootton, Northampton. British Bryological Society. 978-0-9561310-2-7. 0268-8034. British Bryological Society Special Volume. 5. 4.
2. http://www.stirling.gov.uk/moss_ap.pdf "Moss Species Action Plan US8"
3. http://www.ukbap.org.uk/library/reporting_pdfs/UKListID263_2002.pdf "Didymodon mamillosus : (Perthshire Beard Moss)"
4. http://www.ukbap.org.uk/library/Reporting_pdfs/UKListID263_1999.pdf "Species and Habitat Action Plan Assessment Form"