昙花（ＥｐｉｐｈｙｌｌｕｒｎｏｘｙｐｅｔａｌｕｍＨａｗ．）原产于墨西哥和中南美洲的热带森林中，喜温暖潮湿，不耐严寒，忌烈日曝晒。其肉质茎扁平呈叶状，多具２棱，边缘具波状圆齿。花开于夏、秋之夜，从花蕾张开到完全绽放，约需二三个小时，再经三四个小时便开始凋谢 EpiphyllurnoxypetalumHaw. Native to tropical forests of Mexico and Central and South America, like warm and humid, intolerant cold, avoid sun exposure. The succulent stem is flat leaf-shaped, with 2 edges, with wavy crenate edge. Blooming in summer and autumn night, from the bud to bloom, it takes about two or three hours, and then began to wither after three or four hours