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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 Viola flettii ： ウィキペディア英語版 Viola flettii ''Viola flettii'' is a species of violet known by the common name Olympic violet. Native to the northeastern and eastern Olympic Mountains of Washington in northwestern United States, it occurs on rocky outcrops and talus at subalpine and alpine elevations, i.e., from , and blooms from June through August. This rhizomatous herb produces a hairless stem reaching a maximum height of a few centimeters to around 15 centimeters. The basal leaves have purple-veined green reniform blades borne on petioles. Leaves on the flower stem are similar but smaller. A solitary flower is borne on a slender upright stem. It has five purplish-violet petals with yellowish bases, the lower three with purple veins. The lateral pair are bearded as is the stigma. The spur on the lowest petal is much shorter than the petal.〔 The Olympic Mountains, part of the Pacific Coast Ranges of western North America, was a refugium isolated by glacial ice and outwash channels during the last glacial period. ''Viola flettii'' is one of seven species of plants endemic to the Olympic Mountains.〔 Federally protected in Olympic National Park, it is a rare species which appears on the ''Watch List of Vascular Plants'' of the Washington Natural Heritage Program.〔 Just 36 populations of the species have been identified, of which 22 are within the park or near its boundary. The balance are protected in Olympic National Forest. Many populations are small. In 2001, on Mount Townsend just 20 individuals were counted; on Mount Ellinor, only eight.〔 Populations at higher elevations are less genetically diverse. Those on southern slopes are small. Both need to be protected while emphasizing those populations in more optimal locations so as to maintain the health and genetic diversity of the species.〔 Potential threats include herbivory by ''Oreamnos americanus'' (mountain goats) that were introduced into the Olympic Mountains in the late 1920s.〔 ==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「Viola flettii」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.