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''Iris nigricans'' is a flowering plant in the family Iridaceae. It is the national flower of Jordan. The flowers are blackish-purple and in diameter, and the plants are tall with recurved leaves. It needs direct sun and sharp drainage.〔http://www.rareplants.co.uk/product.asp?P_ID=3080〕 It is endemic to Jordan and is an endangered species. There are 8 other irises native to Jordan, and most of these are also endangered. The black species are sometimes confused with ''Iris nigricans''.〔http://www.jordanflora.com/black_iris.htm〕 *''Iris vartanii'' - Vartanii Iris - light blue flowers - extinct *''Iris atrofusca'' - Jil'ad Iris - black flowers - endangered *''Iris atropurpurea'' - Purple Iris - black flowers - cultivated but vulnerable in the wild *''Iris petrana'' - Petra Iris - black flowers *''Iris germanica'' - German Iris - purple flowers *''Iris postii'' - Post Iris - purple flowers *''Iris edomensis'' - Edom iris - white flowers with black spots - endangered *''Iris aucheri'' - Desert Iris - various colors ==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「Iris nigricans」の詳細全文を読む スポンサード リンク
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