[Vol. 2, 1915] 



506 



ANNALS OF THE MISSOURI BOTANICAL GARDEN 



Explanation of Plate 



Figure 1. 



Culture no. 



PLATE 16 



Conditions of growth. 



30 days in unrenewed distilled H2O. 



30 days in renewed distilled H^O. 



30 days in distilled H 2 0, sterilized every four days. 



30 days in distilled H 2 0, sterilized every four days. 



30 days in unrenewed full nutrient solution. 



30 days in renewed full nutrient solution. 



1 (D* 



2 (2) 



3 (3) 



4 (4) 



5 (5) 



6 (6) 



Figure 2. 

 Showing the method used for seed germination. 



*The numbers in parentheses also correspond to the culture numbers of 

 ( See table vn. ) 



series 5. 



