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''Baccharis'' 〔''Sunset Western Garden Book,'' 1995:606–607〕 is a genus of perennials and shrubs in the aster family (Asteraceae). They are commonly known as baccharises but sometimes referred to as "brooms", because many members have small thin leaves resembling the true brooms. They are not at all related to these however, but belong to an entirely different lineage of eudicots. ''B. halimifolia'' is commonly known as "groundsel bush", and in fact ''Baccharis'' is in the same family as the true groundsels, ''Senecio''. ''Baccharis'', with over 500 species, is the largest genus in the Compositae.〔''Senecio'', formerly considered the largest genus of the family, is now divided into a number of genera, each with fewer species than ''Baccharis''.〕 It is found throughout the Americas, distributed mainly in the warmer regions of Brazil, Argentina, Colombia, Chile and Mexico,〔http://www.arkat-usa.org/get-file/19602/ ''Baccharis'' (Compositae) - Maria José Abad * and Paulina Bermejo〕 with ''B. halimifolia'' ranging northward along the Atlantic Coast to the southern tip of Nova Scotia in Canada.〔(【引用サイトリンク】url=http://gov.ns.ca/natr/wildlife/conservationfund/2009projects.asp )〕 If present, the leaves of ''Baccharis'' are borne along the stems in alternate fashion. Flowers are usually white or pinkish. There are no ray flowers, but many disk flowers (which are staminate) and pistillate flowers. Some species of ''Baccharis'' are toxic to animals; in particular, consumption of ''B. coridifolia'' may lead to necrosis in the gastrointestinal tract of cattle, horses, sheep, and rabbits. ==Classification== ''Baccharis'' is related to the genera ''Archibaccharis'' and ''Heterothalamus''.〔(【引用サイトリンク】 work = Flora of North America )〕 The genus ''Baccharis'' is named after Bacchus (Dionysus), the Roman god of wine. 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「baccharis」の詳細全文を読む スポンサード リンク
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