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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]
Dwarf shrub heaths (Cassiope tetragona, Salix arctica, Vaccinium uliginosum or Betula nana, Grasslands (dry in summer: Arctagrostis latifolia, Carex bigelowii, sooty sedge (Carex misandra), and Eriophorum triste) Permanently wet fens (Carex stans, Eriophorum scheuchzeri, and Arctagrostis latifolia)
The mountainsides are covered with scrubby vegetation, the higher slopes by low scrub such as black crowberry (Empetrum nigrum) and other ericas ()s, the tiny Arctic willow (Salix arctica) and white mountain avens (Dryas octopetala) while the lower slopes have various evergreen trees among the shrubs and the low coastal plains have tall green alder (Alnus viridis sinuata) and evergreen trees ...
In a few low-lying, protected areas there can be small stands of Arctic willow (Salix arctica), Dryas species, and low-growing purple saxifrage (Saxifraga oppositifolia), Kobresia species and arctic poppy (Papaver radicatum).
Salix jepsonii – Jepson's willow; Salix arctica – Arctic willow; Herbaceous perennials and others Allium obtusum – Red Sierra onion, subalpine onion; Carex spp. – Sedges (see also Carex spp. "lower montane forest") Carex specifica – Narrowfruit sedge; Elymus violaceus, syn. Elymus sierrae; Erigeron aequifolius – Hall's daisy (sn ...
These include the Arctic willow (Salix arctica). The Arctic willow may be up to around 7.6 m (25 ft) horizontally, but only 150 mm (6 in) tall. The climate of area is also colder than Gulf Stream locations on the same latitude. For example, the Norwegian city of Trondheim has an annual mean temperature that is 15.2 °C (27.4 °F) milder.
Salix acutifolia Willd. – violet willow; Salix aegyptiaca L. Salix aeruginosa E.Carranza; Salix alatavica Kar. ex Stschegl. Salix alaxensis (Andersson) Coville – Alaska willow; Salix alba L. – white willow; Salix alexii-skvortzovii A.P.Khokhr. Salix alpina Scop. – alpine willow; Salix amplexicaulis Bory & Chaub. Salix amygdaloides ...