Das hier abgebildete Exemplar aus dem Botanischen Garten Todaifuzoku-Tokyo ist von historischem Interesse:

"The spermatozoid of Ginkgo biloba was first discovered in seeds of this female tree by Sakugaro HIRASE, who was a teaching assistent in the Botanical Institute, Imperial University, and was studying the fertilization and embryo development in Ginkgo. This finding is believed one of the most important contributions from the early days of Japanese botany"

(Gedenktafel am Fuße des Baumes). S. HIRASE entdeckte die Spermatozoiden am 9. Sept. 1896, er berichtete darüber am 26. Sept. des gleichen Jahres vor der Tokyo Botanical Society. (Literatur hierzu: Y. OGURA: Phytomorphology 17, 109-114 (1967) ).