Ko. 472] POIJ.KX CI! MX VARIATION 



of "(louhle fertiUzatioiu 

 uiiiKMl witli a sccon.lan 



^ If one could always rely on the ol,s<>rvatioMs 



gyiiinospeniis than Cupressus and possil)ly the A 

 were variations in the number of male cells. 1" 

 posed that, there mi^^ht be numerous spennatoz 

 formed and Strasbiirger ('80, p. 49) writin<r of J mn 

 states tliat one of the two primordial cells found 

 pollen tube, divides into two, and often into two 

 are used for fertilization. At a later date. ho\ 

 author states ('92, p. 32) that in all the caM > he 

 tunity to study exactly, the tjenerative (priinonha' 

 sperms divides into two sister cells. Hodi are uvi- 

 in the Cupressineje l)oth are caHed to ])t>rforni a 

 (p. 33). In the Abietinea- a (hlleren.-e in si>;.- 1 

 makes its appearance, and linallv in Taxiis a ww 

 of the o-c>nerativ(> cell takes place, and ...ilv the 

 function, in fertilization. Since that Matenient 



of Araucarinea^ by Thomj)s()n (:()")) and Lopri( 

 to be sperm cells, as Lopriori believes or else this 

 the gyrnnosperms has been generally overlooked, 

 in the sh.r of the male cells forme.l is conunoti. 



