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MORPHOLOGY OF GYMNOSPERMS 



.•4- * 



Sifc.^ti 



Fig. 211. — Ginkgo biloba: ovulate tree in the botanical garden of the Imperial 

 University at Tokyo, Japan; the first " spermatozoids " discovered in gymnosperms 

 were found by HiRASfi in material taken from this tree. — From photograph by Miyake. 



