i86 



m?:moirs of the new york botanicai. garden. 



lated. The leaves of the etiolated specimen soon perished, but the 

 development of the inflorescence progressed so far that some of the 

 terminal flowers had opened in a manner apparently normal. 

 The rootstock remained sound and healthy. 



Viola obliqua Hill. 

 Specimens of a violet native to the Garden were taken from the soil 

 in March, 1900. This is an acaulescent species which ordinarily 



Fig. 146. Viola obliqua. A, epidermis of normal petiole. B, epidermis from 

 etiolated petiole. C, epidermis from normal lamina. D, epidermis from etiolated 

 lamina. E, etiolated specimen. 



sends only its petioles and peduncles above the soil. The petioles 

 of the etiolated specimens attained a length about double that of the 



