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''Eriogonum'' is the scientific name for a genus of flowering plants in the family Polygonaceae. The genus is found in North America and is known as wild buckwheat. This is a highly species-rich genus, and indications are that active speciation is continuing. It includes some common wildflowers such as the California buckwheat (''Eriogonum fasciculatum''). It came into the news in 2005 when the Mount Diablo buckwheat (''Eriogonum truncatum'', believed to be extinct) was rediscovered. ==Importance for Lepidoptera== ''Eriogonum'' species are used as food plants by the larvae of some Lepidoptera (butterflies and moths). Several of these are monophagous, meaning their caterpillars only feed on this genus, sometimes just on a single taxon of ''Eriogonum''. Wild buckwheat flowers are also an important source of food for these and other Lepidoptera. In some cases, the relationship is so close that ''Eriogonum'' and dependent Lepidoptera are in danger of coextinction. Monophagous Lepidoptera on wild buckwheat include: * ''Apodemia mormo'' (Mormon metalmark) - feeds exclusively on ''Eriogonum'' * * ''Apodemia mormo langei'' (Lange's metalmark) - only known from ''Eriogonum nudum'' ssp. ''auriculatum'' * ''Chionodes dammersi'' - feeds exclusively on ''Eriogonum'' * ''Chionodes luteogeminatus'' - only known from ''Eriogonum niveum'' * ''Euphilotes enoptes smithi'' (Smith's blue butterfly) - only known from ''Eriogonum latifolium'' and ''Eriogonum parvifolium'' 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「Eriogonum」の詳細全文を読む スポンサード リンク
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