Three varieties are recognised, the nominate Betula pubescens var. Birch wood of species that grow to a large size such as Betula alleghaniensis (Yellow Birch) have many uses. Arctic downy birch forms the treeline in most of Scandinavia. [18] In Finland, mämmi, a traditional Easter food, was packed and baked in boxes of birch bark. https://www.alamy.com/arctic-downy-birch-betula-pubescens-var-pumila-in-flower-arctic-sweden-image225885715.html, https://www.alamy.com/stock-photo-mountain-birch-and-the-ahkka-massif-78626256.html, https://www.alamy.com/arctic-downy-birch-betula-pubescens-var-pumila-above-abisko-arctic-sweden-image225852808.html, https://www.alamy.com/stock-photo-a-lone-birch-in-the-snowy-wilderness-78011563.html, Downy Birch trees, Betula pubescens, in wilderness in Ovre Dividal National Park the Arctic Circle at Tromso, Northern Norway, https://www.alamy.com/stock-photo-downy-birch-trees-betula-pubescens-in-wilderness-in-ovre-dividal-national-49154532.html, A mountain birch in Stora Sjöfallet National Park, https://www.alamy.com/stock-photo-a-mountain-birch-in-stora-sjfallet-national-park-78711475.html, https://www.alamy.com/stock-photo-small-downy-birches-near-kilpisjrvi-81315952.html, https://www.alamy.com/stock-photo-downy-birch-in-lapland-81560666.html, downy birch (Betula pubescens), thunderstorm over tundra , Sweden, Sjaunja Naturreservat, https://www.alamy.com/stock-photo-downy-birch-betula-pubescens-thunderstorm-over-tundra-sweden-sjaunja-58094878.html, Downy birch trees (Betula pubescens) with some snow cover during winter showing the colourful bark on the trunk, https://www.alamy.com/downy-birch-trees-betula-pubescens-with-some-snow-cover-during-winter-showing-the-colourful-bark-on-the-trunk-image354741507.html, Sunshine in Stora Sjöfallet national park, https://www.alamy.com/stock-photo-sunshine-in-stora-sjfallet-national-park-78626257.html. Tolerant of a wide range of soils, the Downy Birch will do well even on boggy, waterlogged sites. View from the hill paddus at Mount Nuolja and Lake Tornetrask near Abisko, Sweden. Specimens of the subarctic populations are usually small and very contorted, and are often distinguished as "arctic" downy birch, Betula pubescens subsp. The aim of this study is to determine how downy birch (Betula pubescens) reacts on these changes in different topoclimatic conditions. The larva of the autumnal moth (Epirrita autumnata) feeds on the foliage and in some years, large areas of birch forest can be defoliated by this insect. As with downy birch, the twigs are covered in a fine down. pumila, in flower, arctic Sweden. Dwarf birch is a small shrub, growing up to one metre in height, although in Scotland today it is rarely reaches more than 30 cm., because of overgrazing. It is closely related to, and often confused with, the silver birch (B. pendula), but grows in wetter places with heavier soils and poorer drainage; smaller trees can also be confused with the dwarf birch (B. nana). pubescens, B. p. var. Specimens of the subarctic populations are usually small and very contorted, and are often distinguished as "arctic" downy birch, Betula pubescens subsp. Situated by the foot of mount Nuolja it is the perfect starting point for hikers southward on the 400 kilometer Kungsleden trail. These phenomena have been followed as part of phenological research in Varrio Research Station, University of Helsinki, in Eastern… The Downy Birch prefers cooler northern climates and is even hardier than the Silver Birch, being found growing as far North as the Arctic circle. A reindeer antler in the misty midnight of Lapland. tortuosa"The following 66 files are in this category, out of 66 total. pubescens and B. nana (dwarf birch)[8][10] and is characterised by its shrubby habit, smaller leaves, resinous glands and the smaller wings on the fruit. pubescens, B. p. var. https://www.alamy.com/arctic-downy-birch-betula-pubescens-var-pumila-trunk-of-old-tree-arctic-norway-image225885399.html. [9] https://www.alamy.com/view-on-the-hill-paddus-and-the-valley-lapporten-near-abisko-sweden-image345191352.html, https://www.alamy.com/arctic-downy-birch-betula-pubescens-var-pumila-above-abisko-arctic-sweden-image225850632.html, https://www.alamy.com/stock-photo-frozen-kilpisjarvi-lake-with-sweden-in-the-background-in-arctic-wilderness-49155992.html. The record was previously connected to the following departments: Plant Ecology and Systematics (Closed 2011) (011004000) PY - 2013. The twigs and young branches are very flexible and make good whisks and brooms. 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