Dwarf Willow

Dwarf Willow

Salix polaris
Scale 5 Diat: photosynthetic , Hierachy 1
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FACT: One of the worlds smallest willows. They can reach a very high age. The willow almost crawls along the ground to avoid direct cold.

cold, cool
Graphic by Thøgersen&Stouby | Bjoertvedtwww.thogersen-stouby.dk/
Salix polaris, the polar willow, is a species of willow with a circumpolar distribution in the high arctic tundra, extending north to the limits of land, and south of the Arctic in the mountains of Norway, the northern Ural Mountains, the northern Altay Mountains, Kamchatka, and British Columbia, Canada.[1][2][3][4] One of the smallest willows in the world, it is a prostrate, creeping dwarf shrub, only 2–9 cm (0.79–3.54 in) high, and […] read more
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Salix polaris, the polar willow, is a species of willow with a circumpolar distribution in the high arctic tundra, extending north to the limits of land, and south of the Arctic in the mountains of Norway, the northern Ural Mountains, the northern Altay MountainsKamchatka, and British ColumbiaCanada.[1][2][3][4]

One of the smallest willows in the world, it is a prostrate, creeping dwarf shrub, only 2–9 cm (0.79–3.54 in) high, and has underground branches or runners in the uppermost soil layers. The leaves are rounded-ovate, 5–32 mm long and 8–18 mm broad, dark green with entire margins. It is dioecious, with separate female and male plants. The flowers are grouped in short catkins each bearing only a few flowers. The fruit is a brownish and hairy capsule. The long runners with freely rooting stems creep in mats of mosses and lichens, which keeps them together and protects them from the wind. It grows as well in open gravel as in closed vegetation.[1][2][5]

Fossil remains of the species from the Pleistocene ice ages are known in Europe south to southern England, the Alps, and the Carpathians.[3]

The species has also been reported from Arizona,[3][4] but this is not accepted by the USDA.[6]

(From Wikipedia, June 2018)

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