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Dimeresia howellii : ウィキペディア英語版 | Dimeresia
''Dimeresia'' is a monotypic genus in the sunflower family containing the single species ''Dimeresia howellii'', known by the common name doublet.〔(Gray, Asa. 1886. Synoptical Flora of North America 1(2): 448–449 )〕〔(Tropicos, ''Dimeresia'' A. Gray )〕 The doublet is a very tiny annual flowering plant rarely exceeding 4 centimeters in height or width. It forms a small tuft on the ground with several oval-shaped leaves and an inflorescence of tiny white to purple bell-shaped flowers each a few millimeters long. This uncommon plant is found in one region in the western United States (States of California, Oregon, Idaho, and Nevada), primarily in the volcanic plain known as the Modoc Plateau.〔(Flora of North America, ''Dimeresia'' A. Gray )〕〔(Biota of North America Program 2013 county distribution map )〕 == 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「Dimeresia」の詳細全文を読む
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