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Lupinus angustifolius
''Lupinus angustifolius'' is a species of lupin known by many common names, including narrow-leafed lupin and blue lupin. It is native to Eurasia and northern Africa and naturalized in parts of Australia and North America. It has been cultivated for over 6000 yearsas a food crop for its edible legume seeds, as a fodder for livestock and for green manure.
==Biology==
Like other legumes, the narrow-leafed lupin fixes nitrogen in a symbiotic interaction with different bacteria in the rhizosphere. Bacteria living in this rhizosphere include Bradyrhizobium lupinii or the newly discovered species Kribbella lupini.〔Trujillo, M. E., et al. (2006). (''Kribbella lupini'' sp. nov., isolated from the roots of ''Lupinus angustifolius'' ). ''Int J Syst Evol Microbiol'' 56:407-11.〕
The narrow-leafed lupin is an erect, branching herb sometimes exceeding one meter. There are reduced-branching cultivars. Each palmate leaf is divided into 5 to 9 linear leaflets under 4 centimeters long. The herbage is slightly hairy in some areas. The inflorescence bears many flowers in shades of blue, violet, pink, or white. The fruit is a legume pod containing seeds of varying colors from dark gray to brown to white, or speckled or mottled.〔(【引用サイトリンク】title=Lupinus angustifolius )〕
Lupinus angustifolius has a high content of alkaloids, e.g. lupanin or angustifolin. However, cultivars with a low alkaloid content have been bred. These low alkaloid cultivars are called sweet lupins.
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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