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Helianthus anomalus : ウィキペディア英語版 | Helianthus anomalus
''Helianthus anomalus'', Western sunflower, is a species of plants in the sunflower family, found in the southwestern United States. ''Helianthus anomalus'' is of particular interest due to its genetics. It was produced via hybridization of two other sunflower species, ''H. annuus'' and ''H. petiolaris'', multiple times between approximately 60,000 and 200,000 years ago. From these two parent plants, three hybrids were formed, each with distinct characteristics and habitat preferences. ==Distribution== ''Helianthus anomalus'' is found in the United States in Arizona, New Mexico, Nevada and Utah.〔(【引用サイトリンク】url=http://plants.usda.gov/core/profile?symbol=hean4 )〕 Both ''H. anomalus'' hybrids are subject to stressful ecological conditions. They grow in sand dune habitats, which have limited access to nitrogen and water, and are thus considered stressful environments. ''Helianthus anomalus'' is native to these states, not introduced.
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「Helianthus anomalus」の詳細全文を読む
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