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Job's tears (US) or Job's-tears (UK), scientific name ''Coix lacryma-jobi'', also known as coixseed, tear grass, hato mugi, adlay or adlai, is a tall grain-bearing perennial tropical plant of the family Poaceae (grass family) native to Southeast Asia〔Taylor, G. D., "Some crop distributions by tribes in upland Southeast Asia", ''Southwestern Journal of Anthropology'' Vol. 9, No. 3, Autumn 1953〕 but elsewhere cultivated in gardens as an annual. It has been naturalized in the southern United States and the New World tropics. In its native environment it is grown in higher areas where rice and corn do not grow well. Job's tears are also commonly sold as Chinese pearl barley in Asian supermarkets, although ''C. lacryma-jobi'' is not closely related to barley (''Hordeum vulgare''). There are two main varieties of the species: * The wild variety ''Coix lacryma-jobi'' var. ''lacryma-jobi'' has hard-shelled pseudocarps which are very hard, pearly white, oval structures used as beads for making rosaries, necklaces, and other objects. * The cultivated variety ''Coix lacryma-jobi'' var. ''ma-yuen'' is harvested as a cereal crop, has a soft shell, and is used medicinally in parts of Asia.〔Arora, R. K., 1977, "Job's tears (''Coix lacryma-jobi'') - a minor food and fodder crop of northeastern India", Economic Botany, Vol. 31, No. 3, 358–366.〕 ==Taxonomy== The species was named by Carl Linnaeus in 1753. , four varieties are accepted by the World Checklist of Selected Plant Families: * ''Coix lacryma-jobi'' var. ''lacryma-jobi''. Widely distributed throughout the Asian subcontinent to peninsular Malaysia and Taiwan; naturalized elsewhere. * ''Coix lacryma-jobi'' var. ''ma-yuen'' (Rom.Caill.) Stapf. South China to peninsular Malaysia and the Philippines. * ''Coix lacryma-jobi'' var. ''puellarum'' (Balansa) A.Camus. Assam to Yunnan (China) and Indochina. * ''Coix lacryma-jobi'' var. ''stenocarpa'' Oliv.. Eastern Himalayas to Indochina. 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「Job's tears」の詳細全文を読む スポンサード リンク
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