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Tetraneuris
''Tetraneuris'', commonly known as bitterweed, is a genus of North American plants in the sneezeweed tribe within the daisy family.〔(Greene, Edward Lee. 1898. Pittonia 3(18A): 265–270 ) in English〕〔(Tropicos, ''Tetraneuris'' Greene )〕 The genus includes one annual, ''Tetraneuris linearifolia'', with all the other species being perennials. The name is of Greek origin, ''tetra'', four and ''neuron'', nerve, referring to the venation of the rays, which are three-lobed with the outer lobes themselves having an apparent vein down the middle. ;Species〔〔(The Plant List search for ''Tetraneuris'' )〕〔Turner, B. L. 2013. The comps of Mexico. A systematic account of the family Asteraceae (chapter 11: tribe Helenieae). Phytologia Memoirs 16: 1–100〕〔(Biota of North America Program 2013 county distribution maps )〕 # ''Tetraneuris acaulis'' - western Canada, western USA, northern Mexico # ''Tetraneuris argentea'' - Arizona New Mexico # ''Tetraneuris herbacea'' - Ontario Michigan Ohio Illinois # ''Tetraneuris ivesiana'' - Utah Colorado New Mexico Arizona # ''Tetraneuris linearifolia'' - Tamaulipas, Coahuila, Nuevo León, Kansas Oklahoma Texas New Mexico # ''Tetraneuris scaposa'' - Chihuahua, Tamaulipas, Coahuila, Nuevo León, San Luis Potosí, Zacatecas, Nebraska Kansas Oklahoma Texas Colorado New Mexico # ''Tetraneuris torreyana'' - Arizona New Mexico Utah Colorado Wyoming Montana # ''Tetraneuris turneri'' - Coahuila, Texas # ''Tetraneuris verdiensis'' - Arizona ;formerly included〔 see ''Hymenoxys'' * ''Tetraneuris brandegeei - Hymenoxys brandegeei'' * ''Tetraneuris grandiflora - Hymenoxys grandiflora'' == 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「Tetraneuris」の詳細全文を読む
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