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Eupatorium novae-angliae : ウィキペディア英語版 | Eupatorium novae-angliae
''Eupatorium novae-angliae'', commonly called New England boneset,〔 New England justiceweed or New England thoroughwort,〔(Go Botany, New England Wildflower Society, ''Eupatorium novae-angliae'', New England thoroughwort ) includes photos, ecological information, description, distribution map〕 is a rare and endangered North American species in the sunflower family. It is found only in 4 counties in southern New England (Plymouth and Barnstable Counties in Massachusetts, plus Newport and Washington Counies in Rhode Island).〔(【引用サイトリンク】 work = Flora of North America )〕 The species is listed as endangered species in both states.〔 Specimens of ''Eupatorium novae-angliae'' have been collected for many years, classified by botanists as the more widespread species ''E. leucolepis'', found from Long Island to Texas. More recent analysis of chromosomes reveals that the New England plants do not appear to be closely related to ''E. leucolepis.'' ''Eupatorium novae-angliae'' first formed as a hybrid between two other species, neither of them E. leucolepis. .〔〔(【引用サイトリンク】 work = Integrated Taxonomic Information System )〕 It is self-sustaining, rather than being found only where both parents are present, so various authors since 1992 have proposed treating it as a distinct species. A formal renaming was published in 2005.〔〔Arthur Haines & Bruce Alexander Sorie. 2005. Botanical Notes 11: 2.〕 ''Eupatorium novae-angliae'' is a a tall perennial sometimes over 3 feet (90 cm) tall. It has opposite, lance-shaped leaves, and flat-topped arrays of a large number of tiny flower heads. Each head has 5 white disc florets but no ray florets.〔 ==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「Eupatorium novae-angliae」の詳細全文を読む
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