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珙桐,又名中国鸽子树,俗称水梨子,虹口山区村民称为山梨儿,国家一级保护珍贵树种,四川省省树,是与银杏齐名的第四纪冰川侵袭后幸存下来的植物活化石。在植物分类学上,珙桐为单科单属植物,仅有一个变种光叶珙桐。珙桐为高大落叶乔木,树形优美,有极高的观赏价值。珙桐之神奇在于花,每年4月份珙桐花开,暗红色的头状花序如鸽子的头部,绿黄色的柱头像鸽子的喙,花苞片像鸽子的翅膀。手掌般大小的花苞片在微风吹拂下万花齐动,似成群的白鸽展翅欲飞,
Davidia involucrata, also known as the Chinese pigeon tree, commonly known as the water pear, Hongkou mountain villagers called the pear, the protection of precious tree species at the national level, the provincial tree in Sichuan province, is a genus of Quaternary glaciers and gingko survive after the invasion of plant living fossils. In plant taxonomy, Davidia involucrata is a monocotyledonous plant, with only one variant of leaves Davidia involucrata. Davidia deciduous tree is tall, tree-shaped, has a very high ornamental value. The miracle of Davidia involucrata is that the flowers bloom in April every year, with dark red heads like the head of a pigeon, the green-yellow stigma like the beak of a pigeon, and the bracteoles like the wings of a pigeon. The palm-sized bracteoles flutter in the gentle breeze, like a bunch of white pigeons wings to fly,