MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



87 



Percentage of watei" 



" " dried matter 



" " ash in fresh material 



»' " " " dried " 



89-73 

 10.27 



.72 



7.04 



Calla palustris L. 

 Rootstocks of Calla palustris were taken in a resting stage in 

 April, and placed in dishes of water and mud in the dark chamber 

 in April. The plant is a native of bogs and often grows in the mud 

 at the bottom of shallow pools. Etiolated leaves had laminae 

 slightly less than the normal, while the petioles was somewhat elon- 



FiG. 43. A, normal example of Calla falustris. B, etiolated example of Calla 

 palustris. 



gated beyond the normal. No other differences of importance could 

 be discovered. 



Camassia sp. 



Bulbs of a ^tamasia ( Camassia) placed in the dark room m mid- 

 winter soon began a slow growth, the bud pushing up to a length of 

 2 cm. before opening. The sheathing scale had a length of about 3 cm. 



