The ontogeny of epiphyllous microsporangia Ginkgo indicated that the microsporophyll in Ginkgo is of phyllome origin.Possibly, the epiphyllous microsporangia is a peculiar chimera.

叶孢子囊银杏个体发，表银杏孢子叶有叶来质，叶孢子囊银杏可能是一种奇特嵌合体。