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Aeschynomene americana
''Aeschynomene americana'' is a species of flowering plant in the legume family known by many common names, including shyleaf,〔(''Aeschynomene americana''. ) USDA Plants Profile.〕 forage aeschynomene,〔Thro, A. M., et al. (1990). (Weed potential of the forage legume Aeschynomene (''Aeschynomene americana'') in rice (''Oryza sativa'') and soybeans (''Glycine max''). ) ''Weed Technology'' 4(2) 284-90.〕 American joint vetch (United States and Australia), thornless mimosa (Sri Lanka), bastard sensitive plant (Jamaica), ''pega pega'', ''pega ropa'', ''antejuela'', ''ronte'', ''cujicillo'', and ''dormilonga'' (Latin America).〔(''Aeschynomene americana''. ) FAO.〕 It is native to Central America, parts of South America, the West Indies, and Florida.〔
This plant is an annual or perennial herb growing up to 2 meters tall. The leaves are up to 7 centimeters long and have several pairs of linear to oblong leaflets. The sensitive leaves fold up when touched. The inflorescence is a raceme of flowers each up to a centimeter long. The flowers range in color from white to pinkish, orange, or purplish. The fruit is a curved legume pod up to 4 centimeters long made up of several jointed units, each unit containing a seed.〔
This species is widely used as a green manure or pasture plant throughout the tropical world.〔Zhang, J. (1998). (Variation and allometry of seed weight in ''Aeschynomene americana''. ) ''Annals of Botany'' 82 843-47.〕 It is grazed by livestock and may be cut for hay.〔(''Aeschynomene americana''. ) USDA NRCS Plant Fact Sheet.〕 Cattle readily eat the plant and spread the seeds on their coats and in manure. Available cultivars include 'Glenn'.〔
In the wild it is generally a wetland plant, easily taking hold in wet places such as drainage ditches.〔
==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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