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

叶生囊银杏发生，表银杏叶有叶性来源性质，叶生囊银杏可能是一种奇特嵌合。