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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Dicksonia squarrosa ： ウィキペディア英語版 Dicksonia squarrosa ''Dicksonia squarrosa'', commonly called whekī or rough tree fern, is a common tree fern endemic to New Zealand. It has a slender black trunk that is usually surrounded by many dead brown fronds.〔(【引用サイトリンク】url=http://www.forestferns.co.uk/tree-ferns/dicksonia/dicksonia-squarrosa )〕 This species has a fast growth rate of up to a year, growing to about tall.〔(【引用サイトリンク】url=http://www.fronds.co.nz/products/Fronds_Tree+Ferns/Dicksonia+squarrosa+-+Brown+tree+fern+or+Ponga/66 )〕 It produces few fronds, all of which sprout in almost horizontal fashion. The fronds reach in length, much smaller than ''Cyathea'' varieties, and are quite crisp to touch. They form a small "umbrella" on top of the trunk. They are sometimes found sprouting from apparently dead pieces of trunk. The trunks are often used for fencing or edging and fronds will sometimes sprout from the side if the top is dead. A feature of the whekī is the spreading underground rhizomes which can create dense groves, making it one of the most common tree ferns in New Zealand forests.〔(【引用サイトリンク】url=http://www.teara.govt.nz/en/1966/ferns-tree/1 )〕 The whekī is quite hardy and tolerant to sun and some wind, but is best suited to a site with partial shade and minimal wind. It will tolerate some exposure to the elements – but can look quite scruffy in such a situation. Some protection should be considered over the winter months in climates with temperatures below 4-5 C, e.g. shadecloth cover or straw packed in the crown. The fronds are small and compact, making this fern an ideal container or garden plant where space is limited. It has gained the Royal Horticultural Society's Award of Garden Merit.〔(【引用サイトリンク】url=http://apps.rhs.org.uk/plantselector/plant?plantid=4446 )〕 The Māori used to form fences of their fortified Pā with the dead whekī trunks. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Dicksonia squarrosa」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.