Hirase Sakugorō (平瀬作五郎, February 12, 1856 – January 4, 1925) was a Japanese
botanist and painter. Born into a
samurai family in
Fukui, Hirase discovered the
spermatozoids of the
ginkgo in January 1894, before Seiichiro Ikeno discovered the spermatozoids of the
cycad.[1] He is a laureate of the
Imperial Prize of the Japan Academy (1912).
Works
Selections regarding Ginkgo biloba:
1894a. Fecundation period of Ginkgo biloba. (In Japanese) Bot. Mag., Tokyo 8: 7-9.
1894b. Notes on the attraction-spheres in the pollen-cells of Ginkgo biloba. (In Japanese) Bot. Mag., Tokyo 8: 359-60; 361 -364.
1895a. Etudes sur le Ginkgo biloba (note pröliminaire). Bot. Mag.,Tokyo 9: 239-240.
1895b. Etudes sur la föcondation et l´embryogönie du Ginkge biloba (1). J. Coll Sci. imp. Univ. Tokyo 8: 307-3 22.
1896a. Spermatozoid of Ginkgo biloba. (In Japanese) Bot. Mag., Tokyo 10:171.
1896b. On the spermatozoid of Ginkgo. (In Japanese) . Bot. Mag., Tokyo 10: 325-328.
1897. Untersuchungen über das Verhalten des Pollens von Ginkgo biloba. Bot. Zbl. 49: 33-35.
1898. Etudes sur la fécondation et l´embryogénie du Ginkgo biloba (second mémoire). J. Coll. Sei. imp. Univ. Tokyo 12: 103-149.