132 BOTANICAL GAZETTE [august 



toward the level of monocotyledons, and the conclusion is borne 

 out by the female gametophyte. 



The writer is indebted to Professor John M. Coulter for sug- 

 gestions and criticisms, and to Dr. W. J. G. Land for the material 

 used and for direction and encouragement during the investigation. 



University of Chicago 



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