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''Cressa'' is a genus of plants in the morning glory family known generally as alkaliweeds. These plants are native to the tropical and subtropical areas of the world. They are clumpy and low-growing but usually have erect stems covered white-haired, green leaves. They produce tiny white flowers about half a centimeter across. There are four species in the genus.〔Austin, D. F. (2000). (A revision of ''Cressa'' L.(Convolvulaceae). ) ''Botanical Journal of the Linnean Society'' 133(1), 27-39.〕 Species include:〔 *''Cressa australis'' *''Cressa cretica'' *''Cressa nudicaulis'' *''Cressa truxillensis'' ==Sources== 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「Cressa (genus)」の詳細全文を読む スポンサード リンク
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