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'''''Pteris''''' ('''brake''') is a genus of about 300 species of [[fern]]s in the subfamily [[Pteridoideae]] of the family [[Pteridaceae]].<ref name=PPGI/><ref name=Christenhusz-2011/> They are native to tropical and subtropical regions, southward to [[New Zealand]], [[Australia]], and [[South Africa]], north to [[Japan]] and [[North America]]. 78 species (35 endemic) are found in [[China]].<ref>{{ Cite web |url = http://www.iplant.cn/info/Pteris?t=foc|title = Pteris Linnaeus Sp.|publisher = Flora of China|language = en}}</ref > Some species of ''Pteris'' have considerable economic and ecological value, such as ''[[Pteris multifida]]'', ''[[Pteris ensiformis]]'', ''[[Pteris vittata]]'' can be used for ornamental purposes; as a [[hyperaccumulator]], Pteris multifida and Pteris vittata can be used to control [[soil pollution]].<ref>{{ Cite web |url = http://scitech.people.com.cn/BIG5/n1/2018/0205/c1007-29805512.html|title = 世界鳳尾蕨屬系統發育關系獲重建|publisher = Science and Technology Daily|language = zh}}</ref >
Many of them have linear frond segments, and some have sub-palmate division. Like other members of the [[Pteridaceae]], the frond margin is reflexed over the marginal [[sorus|sori]]. The outermost layer is the single layered [[epidermis]] without stomata. The cortex is differentiated into outer and inner cortical region. The vascular cylinder is an [[wikt:amphiphloic|amphiphloic]] [[siphonostele]].
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