[Vol. 2, 1915] 



500 



ANNALS OF THE MISSOURI BOTANICAL GARDEN 



Explanation of Plate 



Figure 

 Culture no. 



1 (2 



2 (3 



3 (6 



4 (8 

 6 (10 



6 (14 



7 (18 



8 (22 



9 (23 

 10 (25 



Figure 



1 (9 



2 (10 



3 (11 



4 (12 



5 (13 



6 (14 



7 (19 



8 (20 



9 (21 

 10 (22 



1. 



2. 



PLATE 13 



Conditions of growth. 



Unrenewed distilled H 2 0, 45 days. 

 Renewed distilled H 2 0, 45 days. 



1 day dist. H 2 0, 44 days in renewed full nutr. 



2 days dist. H 2 0, 43 days in renewed full nutr. 

 5 days dist. 11 2 0, 40 days in renewed full nutr. 



10 days dist. H 2 (renewed), 35 in renewed full nutr. 

 15 days dist. H 2 (renewed), 30 in renewed full nutr. 

 20 days dist. H 2 (renewed), 25 in renewed full nutr. 

 45 days in unrenewed full nutr. 

 45 days in renewed full nutr. 



5 days in unrenewed dist. H 2 0, 40 days in unrenewed full nutr. 

 5 days in unrenewed dist. H 2 0, 40 days in renewed full nutr. 

 10 days in unrenewed dist. 11 2 0, 35 days in unrenewed full nutr. 



in unrenewed dist. il 2 0, 35 days in renewed full nutr. 



renewed dist. H 2 0, 35 days in unrenewed full nutr. 



renewed dist. H 2 0, 35 days in renewed full nutr. 



unrenewed dist. H 2 0, 25 days in unrenewed full nul 



unrenewed dist. H 2 0, 25 days in renewed full nutr. 



renewed dist. H 2 0, 25 days in unrenewed full nutr. 



renewed dist. H 2 0, 25 days in renewed full nutr. 



10 

 10 

 10 

 20 

 20 

 20 

 20 



days 

 days 

 days 

 days 

 days 

 days 



days 



in 

 in 

 in 

 in 

 in 

 in 



* The numbers in parentheses correspond to the culture numbers of series 1. (See 

 table 1.) 



