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Cyanea rivularis
''Cyanea rivularis'' (syn. ''Delissea rivularis'')〔USFWS. (''Delissea rivularis'' Five-year Review. ) August 2010.〕 is a rare species of flowering plant in the bellflower family known by the common name plateau cyanea. It is endemic to Hawaii, where it is known only from the island of Kauai. There are three small populations of the plant remaining in the wild, for a total of 19 individual plants.〔 The plant was federally listed as an endangered species of the United States in 1996.〔(''Delissea rivularis''. ) The Nature Conservancy.〕
This Hawaiian lobelioid is a shrub growing 4 to 5 meters tall. It bears blue-striped white flowers. It grows in wet forest habitat, generally next to streams, waterfalls, and plunge pools.〔〔 Other plants in the habitat include ōhia lehua (''Metrosideros polymorpha'') and uluhe (''Dicranopteris linearis''), which dominate the canopy, and kanawao (''Broussaisia arguta''), ieie (''Freycinetia arborea'') and aiea (''Ilex anomala'') in the understory.〔
This ecosystem is threatened by exotic plant species such as Koster's curse (''Clidemia hirta''), Kahili ginger (''Hedychium gardnerianum''), and Santa Barbara daisy (''Erigeron karvinskianus''). Feral ungulates damage the habitat, and rats and slugs damage plants.〔
==References==
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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