MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



173 



of the stem which had now reached a length of 35 cm. were not 

 more than 5 to 7 mm. long. The stem had fallen prostrate by its 

 own weight, but the terminal portion had curved upward apogeo- 

 tropically. A number of small papillar projections a millimeter in 

 diameter were seen emerging from various parts of the internodes. 

 In some instances the emergences were from nodal areas, while in 

 others a position in the middle of the internodes was occupied. Gen- 

 erally but one of these structures was found on each internode, but 

 in some instances two were found. These emergences were sup- 

 posedly young roots. The terminal half of this upright stem was 

 imbedded in the soil in the propagating house, and developed a new 

 plant, forming an exception to the old statement that etiolated organs 

 could not be used as cuttings. The upright etiolated stem showed 

 two or three layers of epidermal cells with brownish collapsing walls, 

 a fundamental parenchyma of small elements, with some intercellular 

 spaces. The outer fibrovascular bundles were notably reduced in 

 both xylem and phloem as well as in the stereome. 



Sarracenia purpurea L. 



Numbers of specimens were grown in the dark chamber 

 in 1898. The leaves were wedge-shaped in transverse sec- 

 tion, and slightly greater in diameter than the normal. The 

 leaves already formed, and which had reached a length of a 



Fig. 133. Sarracenia purpurea. A, etiolated culture. B, etiolated culture after 

 exposure to illumination for i8 days. C, etiolated leaf. 



