Plagiomnium medium, commonly known as Alpine Thyme-moss, or Medium Plagiomnium Moss is a moss

Moss

Mosses are small, soft plants that are typically 1–10 cm tall, though some species are much larger. They commonly grow close together in clumps or mats in damp or shady locations. They do not have flowers or seeds, and their simple leaves cover the thin wiry stems...

 found in montane

Montane

In biogeography, montane is the highland area located below the subalpine zone. Montane regions generally have cooler temperatures and often have higher rainfall than the adjacent lowland regions, and are frequently home to distinct communities of plants and animals.The term "montane" means "of the...

 habitats in the Northern Hemisphere

Northern Hemisphere

The Northern Hemisphere is the half of a planet that is north of its equator—the word hemisphere literally means “half sphere”. It is also that half of the celestial sphere north of the celestial equator...

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Research published in 1988 showed that is a hybrid of P. ellipticum and P. insigne via an allopolyploid process, previously considered to be absent in bryophyte evolution.

In the UK it is classified as near threatened

Threatened species

Threatened species are any speciesg animals, plants, fungi, etc.) which are vulnerable to endangerment in the near future.The World Conservation Union is the foremost authority on threatened species, and treats threatened species not as a single category, but as a group of three categories,...

. More than 10% of all UK populations occur in the Cairngorms National Park

Cairngorms National Park

The Cairngorms National Park is a national park in north east Scotland, established in 2003. It was the second of two national parks established by the Scottish Parliament, after Loch Lomond and the Trossachs National Park, set up in 2002. The park covers the Cairngorms range of mountains, and...

 in Scotland

Scotland

Scotland is a country that is part of the United Kingdom. Occupying the northern third of the island of Great Britain, it shares a border with England to the south and is bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the...

 including sites in the Lairig Ghru

Lairig Ghru

The Lairig Ghru is one of the mountain passes through the Cairngorms of Scotland.Like many traditional routes the ends of the route through the Lairig Ghru are like the ends of a frayed rope. From the south the Lairig Ghru can be approached from Braemar though Glen Lui, or Glen Dee, and from Blair...

 and on the plateau of Lochnagar

Lochnagar

Lochnagar or Beinn Chìochan is a mountain in the Grampians of Scotland, located about five miles south of the River Dee near Balmoral.-Names:...

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