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Erechtites
''Erechtites'' is a genus of flowering plants in the daisy family known commonly as fireweeds or burnweeds. They are native to the Americas and Australia,〔(【引用サイトリンク】 work = Flora of North America )〕 but some species are widely distributed weeds.〔〔(【引用サイトリンク】 ''Erechtites hieraciifolius'' (L.) Raf. ex DC. )〕〔(【引用サイトリンク】 ''Erechtites valerianifolia'' (Wolf) DC. )〕
Some species in this genus are treated as members of ''Senecio'' by some authors, and several other species are considered variants of ''Erechtites hieraciifolius'', so there may be as few as 5 distinct species in this genus. In particular, not all authors agree on whether to include a dozen or so species native to Australia and New Zealand in ''Erechtites''.〔(Erechtites Hieracifolia. Fireweed. ), ''Drugs and Medicines of North America, 1884-1887'' by John Uri Lloyd and Curtis G. Lloyd. Online edition by Henriette Kress, 2002-2009〕〔(Jepson Manual Treatment )〕 For the purposes of the list below, we follow the lead of The Plant List maintained by Kew Gardens in London.〔(The Plant List search for ''Erechtites'' )〕
''Erechtites'' consists of annual or perennial herbs with large taproots and very often with a pungent odor. Leaves are usually ovate or lanceolate (sometimes pinnately lobed or pinnatifid). Flower heads may sometimes contain as many as 100 yellow or white (rarely pink) disc florets but no ray florets.〔
;Species〔
*''Erechtites glomeratus'' (Desf. ex Poir.) DC. - Australia〔(Atlas of Living Australia, ''Senecio glomeratus'' Desf. ex Poir., Cluster-headed Fireweed )〕
*''Erechtites goyazensis'' (Gardner) Cabrera - South America
*''Erechtites hieraciifolius'' (L.) Raf. ex DC. - North America, South America, West Indies, Australia, New Zealand; naturalized in Asia〔(Biota of North America Program, ''Senecio hieraciifolius'' )〕〔(Flora of China, 梁子菜 liang zi cai ''Erechtites hieraciifolius'' (Linnaeus) Rafinesque ex Candolle )〕
*''Erechtites ignobilis'' Baker - Brazil
*''Erechtites leptanthus'' (Phil.) Cabrera - Chile
*''Erechtites minimus'' (Poir.) DC. - Australia〔(Atlas of Living Australia, ''Senecio minimus'' Poir., Toothed Fireweed )〕
*''Erechtites missionis'' Malme - South America
*''Erechtites runcinatus'' (Less.) DC. - Mexico
*''Erechtites valerianifolius'' (Wolf) DC. - Mexico, South America, Central America
The genus name ''Erechtites'' is considered masculine by some botanists and feminine by others. Hence some species names may end in "-us" or "-a," for example, ''Erechtites valerianifolius'' versus ''E. valerianifolia.'' International Code of Botanical Nomenclature (Art. 62.4) specifies that generic names ending in "-ites" are to be treated as masculine, hence the "-us" ending in such cases is to be preferred over the "-a" ending.〔〔(International Code of Nomenclature for algae, fungi, and plants (Melbourne Code) ) article 62.4〕
==References==
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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