我们美丽的世界,被成千上万的花朵装饰着,它们万紫千红,它们千娇百媚,但是,世界上最古老的花是什么样的?是像牡丹、芍药那样艳丽,还是如荷花、梅花一般清幽?最早的被子植物何时、何地起源?谁是它们的祖先?这一系列耐人寻味的司题一直引起人们的关注和思索。英国著名生物学家达尔文对被子植物突然在白垩纪的中期(距今约1亿年)大量出现而又找不到它们的祖先类群及早期演化的线索,困惑不解,称之为“讨厌之谜”。一个多世 Our beautiful world is decorated with thousands of flowers, they are colorful, they are enamored, but what is the oldest flower in the world, is it as beautiful as peony or peony, or is it as lily or plum? The earliest angiosperm when, where and from? Who is their ancestors? This series of intriguing questions has always been cause for concern and reflection. Darwin, a famous British biologist, was puzzled by the sudden appearance of angiosperms in the mid-Cretaceous period (about 100 million years ago) without any clues about their ancestral groups and their early evolution. It was called “annoying puzzle”. More than one