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Orcuttia pilosa : ウィキペディア英語版 | Orcuttia pilosa
''Orcuttia pilosa'' is a rare species of grass known by the common name hairy Orcutt grass. == Distribution == It is endemic to the Central Valley of California, where it grows only in vernal pools, a rare and declining type of habitat. Many known occurrences of the plant have been extirpated as land in the heavily agricultural Central Valley has been altered, and it was federally listed as an endangered species in 1997.〔USFWS. (Determination of endangered status for three plants and threatened status for five plants from vernal pools in the Central Valley of California ). ''Federal Register'' March 26, 1997.〕 In that year there were 25 known remaining populations of the grass, only 12 of which were considered stable.〔
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「Orcuttia pilosa」の詳細全文を読む
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