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Alternanthera
・ Alternanthera areschougii
・ Alternanthera bettzickiana
・ Alternanthera caracasana
・ Alternanthera corymbiformis
・ Alternanthera echinocephala
・ Alternanthera filifolia
・ Alternanthera flavicoma
・ Alternanthera galapagensis
・ Alternanthera grandis
・ Alternanthera helleri
・ Alternanthera littoralis
・ Alternanthera mosaic virus
・ Alternanthera nesiotes
・ Alternanthera philoxeroides


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Alternanthera : ウィキペディア英語版
Alternanthera

''Alternanthera'' is a genus of flowering plants in the amaranth family, Amaranthaceae. It is a widespread genus with most species occurring in the tropical Americas,〔Sánchez-Del Pino, I., et al. (2012). (Molecular phylogenetics of ''Alternanthera'' (Gomphrenoideae, Amaranthaceae): resolving a complex taxonomic history caused by different interpretations of morphological characters in a lineage with C4 and C3–C4 intermediate species. ) ''Botanical Journal of the Linnean Society'' 169(3), 493-517.〕〔(''Alternanthera''. ) Flora of North America.〕 and others in Asia, Africa, and Australia.〔 Plants of the genus may be known generally as joyweeds, or Joseph's coat.〔(''Alternanthera''. ) Integrated Taxonomic Information System (ITIS).〕 Several species are notorious noxious weeds.〔Tanveer, A., et al. (2013). (A review on genus ''Alternanthera'' weeds implications. ) ''Pak. J. Weed Sci. Res'' 19(1), 53-58.〕
==Description==
These are annual or perennial herbs or subshrubs. While some of the better-known species are aquatic plants, most are terrestrial.〔 They take many forms, from prostrate to erect to floating. The leaves are oppositely arranged. The inflorescence is a spike or a rounded head occurring in the leaf axils or the ends of branches. The flowers have 5 tepals. There are 3 to 5 stamens which are fused into a rim at the bases, and 5 pseudostaminodes, appendages between the stamens that are not true staminodes. The fruit is a utricle containing one seed.〔

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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