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S. arctica is typically a low shrub growing to only 15 centimetres (6 inches) in height, rarely to 25 cm (10 in), although it may reach 50 cm (20 in) in height in the Pacific Northwest. [4] It has round, shiny green leaves 1–4 cm ( 1 ⁄ 2 – 1 + 1 ⁄ 2 in) long and 6 cm ( 2 + 1 ⁄ 4 in) broad; they are pubescent, with long, silky, silvery ...
Arctic vegetation is largely controlled by the mean temperature in July, the warmest month. Arctic vegetation occurs in the tundra climate, where trees cannot grow.Tundra climate has two boundaries: the snow line, where permanent year-round snow and ice are on the ground, and the tree line, where the climate becomes warm enough for trees to grow. [7]
Willow roots spread widely and are very aggressive in seeking out moisture; for this reason, they can become problematic when planted in residential areas, where the roots are notorious for clogging French drains, drainage systems, weeping tiles, septic systems, storm drains, and sewer systems, particularly older, tile, concrete, or ceramic pipes.
Species from the Alaskan coastline and islands have also adapted well in the Faroe Islands, especially Pinus contorta, Picea sitchensis, Salix alaxensis, Populus trichocarpa and Alnus sinuata. The biggest Alaskan pine tree (Pinus contorta) in Europe (in width, not in height), is to be found in the Selatrað plantation in the Faroe Islands.
Salix arctica; Salix herbacea; Salix lanata; Salix polaris; Saxifraga cernua; Saxifraga cespitosa; Saxifraga flagellaris; Saxifraga oppositifolia; Saxifraga rivularis; Schistidium poeltii; Silene acaulis; Sphagnum fimbriatum; Sphagnum squarrosum; Sphagnum wulfianum; The Structure and Biology of Arctic Flowering Plants; Flora of Svalbard
In the Cronquist system, the Salicaceae were assigned to their own order, Salicales, and contained three genera, Salix, Populus, and Chosenia (now a synonym of Salix). Recognized to be closely related to the Violaceae and Passifloraceae, the family is placed by the APG in the order Malpighiales.
Achillea millefolium ssp. millefolium – introduced; Antennaria affinis – native, endemic (microspecies); Antennaria alpina; Antennaria angustata – native; Antennaria boecherana – native, endemic (microspecies)
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