Betula nana
"Betula nana" is native to arctic and cool temperate regions of Greenland, Iceland, northern Europe, northern Asia and northern North America and it will grow in a variety of conditions. Outside of far northern areas, it is usually found growing only in mountains above , up to in Scotland and in the Alps. Its northern range limit is on Svalbard, where it is confined to warm sites. In the UK "Betula nana" is at its southern range limit, with many populations having declined significantly in recent decades. In southern Sweden the occurrence of "Betula nana" in Sund, Ydre is deemed a glacial relict.