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Hylocomium splendens : ウィキペディア英語版 | Hylocomium splendens
''Hylocomium splendens'', commonly known as glittering wood-moss, stairstep moss, splendid feather moss and mountain fern moss, is a perennial clonal moss with a widespread distribution in Northern Hemisphere boreal forests. It is commonly found in Europe, Russia, Alaska and Canada, where it is often the most abundant moss species. It also grows in the Arctic tundra and further south at higher elevations in, for example, northern California, western Sichuan, East Africa, Australia, New Zealand and the West Indies. In Scotland it is a characteristic species of the Caledonian Forest. Under the UK's national vegetation classification system, pinewood community W18 is named as "Pinus sylvestris-Hylocomium splendens woodland", indicating its significance in this ecosystem.〔("Hylocomium splendens: Mountain Fern Moss" ) Rook.Org. Retrieved 16 May 2008.〕〔("Species Profile: Glittering wood-moss" ) Trees for Life. Retrieved 17 May 2008.〕〔("Hylocomium splendens. Stair-step Moss" ) borealforest.org. Retrieved 17 May 2008.〕〔("The Scottish Biodiversity List - Species & Habitat Detail: W18" ) BiodiversityScotland. Retrieved 17 May 2008.〕 ==Morphology==
It is generally olive green, yellowish or reddish green in colour, with reddish stems and branches. These often form branches up to 20 cm. long, with current year's growth starting from near the middle of the previous year's branch. This produces feathery fronds in steps. It is possible to estimate the age of a plant by counting the steps - a new level being produced each year.〔 This form of growth enables the species to "climb" over other mosses and forest debris that falls on it. It is shade-loving, grows in soil and humus and on decaying wood and often forms mats with living parts growing on top of older, dead or dying sections.〔 Further south, the plants are larger with several steps; further north, in the arctic tundra, the plants are smaller with few steps.〔(【引用サイトリンク】 Hylocomium splendens (Hedwig) Schimper )〕
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