The Macroscopic and Microscopic Structure of 



some Hybrid Sarracenias Compared with 



that of their Parents 



By Alice Mary Russell, B.S., M.S. 



[Thesis presented to the Faculty of the Graduate School in partial fulfillment of the 

 Requirements for the Degree of Doctor of Philosophy.] 



CONTENTS 



Historical Review 4 



Natural Distribution of Species and Hybrids Selected for 



Study 8 



Comparison of Parents and Hybrids 



S. purpurea, S. flava, S. Catesbaei 9 



S. flava, S. Drummondii, S. Moorei 18 



S. Sledgei, S. Drummondii, S. areolata 24 



Comparison of Flowers 2 7 



Description of Structure of Glands 3 2 



Ovarian Gland Structure 33 



Conclusions 35 



Bibliography 39 



Description of Plates 4° 



3 



