Periodicals 

 Phenology 

 Philosophy 

 Phylogeny 



Physiological chemistry 

 Physiology, Grenei-al 



of the vegetative organs 



Plankton . . 



Plants, Diseases due to . . 



Plastids . . 



Propagation, Vegetative _ organs 



of ■ 1700, 



Reparative processes 

 Eeproduction, Asexual .. 



Physiology of 



Vegetative . . 



Eeproductive organs .. 1350, 

 Respiration , . 



Root 1200, 



Saprophytism 

 Schizophyceae 

 Secretory tissues . . 



Seed 1600, 



Selection, Artificial 



Natural 



Sexual organs, Cryptogamic 



Shoot 1050, 



Societies, Reports of 



Sporangia.. 



Cryptogamic , - 



i 



