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Diplazium molokaiense
''Diplazium molokaiense'' is a rare species of fern known by the common name Molokai twinsorus fern. It is endemic to Hawaii, where it is one of the rarest ferns.〔Wood, K. R. (2006). (Conservation status of the Hawaiian endemic fern ''Diplazium molokaiense'' (Athyriaceae) in Honomanu, East Maui, Hawai'i. ) ''Endangered Species Research'' 5 1-5.〕 It has historically been found on the islands of Kauai, Oahu, Lanai, Molokai, and Maui, but it is thought to have been extirpated from four of them and today it only exists on Maui.〔USFWS. (''Diplazium molokaiense'' Five-year Review. ) August 2010.〕 There are fewer than 70 individual plants remaining there.〔 The fern was federally listed as an endangered species of the United States in 1994.〔(''Diplazium molokaiense''. ) The Nature Conservancy.〕
==Characteristics==
This fern has leaves up to about 20 centimeters long growing from a twisted rhizome. Each dark green, shiny leaf is made up of several pairs of leaflets, the largest of which is about 5 × 2 cm. They have pointed tips and slightly rippled edges. The sori are up to a centimeter long and are narrow and somewhat curved in shape.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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