Where do the reproductive structures of Ginkgo biloba develop?

In Ginkgo biloba, the reproductive structures develop in the spring as the buds unfold, specifically on the spur (short) branches. These structures are located in the axils of bud scales and foliage leaves.12

Because the ginkgo is a dioecious species, individual trees produce either pollen-producing structures or ovules, but not both. The pollen-producing strobili are pendulous, catkinlike structures, while the ovules occur in pairs (or sometimes three or more) at the tips of stalks that emerge among the leaf bases on the spur branches.12