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

叶小孢子囊的个体发，的小孢子叶有叶性来源的性质，叶小孢子囊可能是一种奇特的嵌合体。