...There are also many circumpolar elements (elements distributed in the high latitudes of the Northern Hemisphere) with extremely isolated distributions. Sundew is the only confirmed source in Honshu, and the water hyacinth is the same as the nuphar found in Hokkaido and other places, and is considered a relict species from the glacial period. There are 20 species of sphagnum moss, which plays an important role in composing the unique landscape of the plains, and the species composition and ecology of Sphagnum nigricans, which grows over a wide area, are unique in Japan. From 【Watercress】...Other species of waterspouts that are distributed in Japan include N. subintegerrimum , N. oguraense , and N. pumilum , whose above-water leaves float on the water surface. N. pumilum var. ozeense , which grows in Oze and has a bright red stigma, is considered to be a variant of N. pumilum. [Ito Motomi]... From [Marshland]…Ponds (also called brenke, which form in high moors) are home to floating-leaf plants such as water hyacinth and water hyacinth, emergent plants such as mountain bulrush, and mat-like plants of Menyanthes trifoliata, and sometimes have floating islands. In extremely humid maritime climates such as Ireland, the soil becomes acidic as the base is leached out, and sphagnum moss can grow directly on the mineral base. This means that domes do not form, and blanket bogs develop in which sphagnum moss spreads flatly in line with the terrain. … *Some of the terminology that mentions "Ozekōhone" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…また著しい隔離分布をしている北周極要素(北半球の高緯度に分布する要素)が多数ある。ナガバノモウセンゴケは本州唯一の確実な産地であり,オゼコウホネは北海道などにあるネムロコウホネと同じもので,氷期の遺存種とみなされている。原の特異な景観の構成に重要な役割を果たしているミズゴケは20種に及び,キダチミズゴケが広範囲に生育していることなど種構成およびその生態からみて日本では他に類例を見ない。… 【コウホネ(河骨)】より… コウホネの仲間はほかに水上葉が水面に浮かぶヒメコウホネN.subintegerrimum,オグラコウホネN.oguraense,ネムロコウホネN.pumilumが日本に分布する。尾瀬に生える柱頭盤が鮮赤色のオゼコウホネN.pumilum var.ozeenseはネムロコウホネの変種とされている。【伊藤 元己】。… 【湿原】より…池塘(ちとう)pond(ブレンケともいう。高層湿原にできる池)には,ヒツジグサ,オゼコウホネなどの浮葉植物,ミヤマホタルイなどの抽水植物,マット状に張り出したミツガシワが生育し,浮島がみられたりする。 アイルランドなどの極端に湿潤な海洋性気候下では,土壌は塩基が溶脱されて酸性となり,鉱物質基盤の上にミズゴケが直接生育できるため,ドームは形成されずに地形なりにミズゴケ類が平坦に広がったブランケット湿原blanket bogが発達する。… ※「オゼコウホネ」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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