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重楼，又称七叶一枝花，是延龄草科（Trillia－ceae）重楼属（Paris）（亦有学者将其置于百合科内）植物的泛称。本属植物形态独特，都是一株植物一个茎，茎上只长一轮叶，在此轮叶上再生出一轮叶状萼片，形如楼台重叠，故有重楼之称，又因为本属植物多数个体的一轮叶为七片（
The re-building, also known as the Seven-leaf Flower, is a generic name for the plant of the genus Trichoriae (Trillia-ceae) Paris (which some scholars place in the Liliaceae). This genus is unique in its form. It is a plant with one stem and only one round of leaves on the stem. A round of leaf-shaped bracts are regenerated on this round leaf. It is shaped like a tower and overlaps, so it is called a re-building, and because of this The number of leaves in most plants is seven (