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Eupatorium cannabinum
''Eupatorium cannabinum'', commonly known as hemp-agrimony, or holy rope,〔 is a herbaceous plant of the sunflower family. It is a robust perennial native to many areas of Europe.〔"Botanica. The Illustrated AZ of over 10000 garden plants and how to cultivate them", p 359. Könemann, 2004. ISBN 3-8331-1253-0〕〔(Altervista Flora Italiana, Holy Rope, gewöhnlicher Wasserdost, hampflockel, ''Canapa acquatica'' ) includes photos and European distribution map〕 It is cultivated as an ornamental and occasionally found as a garden escape in scattered locations in China,〔(Flora of China, ''Eupatorium cannabinum'' Linnaeus, 1753. 大麻叶泽兰 da ma ye ze lan )〕 the United States and Canada.〔(【引用サイトリンク】 ''Eupatorium cannabinum'' )〕〔(Biota of North America Program 2014 county distribution map )〕
If the genus ''Eupatorium'' is defined in a restricted sense (about 42 species), ''E. cannabinum'' is the only species of that genus native to Europe (with the remainder in Asia or North America).〔 (2000): Phylogeny and biogeography of ''Eupatorium'' (Asteraceae: Eupatorieae) based on nuclear ITS sequence data. ''Am. J. Bot.'' 87(5): 716-726. PMID 10811796 (PDF fulltext )〕
==Description==
''Eupatorium cannabinum'' is a perennial herb up to tall or more and wide.〔 It lives in moist low-lying areas in temperate Eurasia. It is dioecious, with racemes of mauve flower heads which are pollinated by insects from July to early September. The flowers are visited by many types of insects, and can be characterized by a generalized pollination syndrome. The flower heads are tiny, fluffy and can be pale dusty pink or whitish.〔 The fruit is an achene about 2 or 3 mm long, borne by a pappus with hairs 3 to 5 mm long, which is distributed by the wind. The plant over-winters as a hemicryptophyte.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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