1907] 



BRIEFER ARTICLES 



383 



crowding induced the formation of the upper leafy branches I am unable 

 to state. In the paper above mentioned^ I suggested that *'it might have 

 been possible to have grown 

 new individuals from the axil- 

 lary vegetative branches, but 

 the suggestion of this idea came 



after the plant had been killed 

 and preserved in alcohol.'' 



As a considerable abundance 

 of material was provided by 

 the abnormal growths pro- 

 duced two years ago, I cut off 

 a number of the short leafy 



inflorescence branches and 

 placed them in a sand bed 

 used for the propagation of 

 cuttings and covered with a 



door- In ten 

 days or tw^o weeks after these 

 interesting branches had been 

 placed in the sand, they had 

 developed, some one, others 

 as many as four or five 

 secondary roots, that had 



hinged glass 



reached a length of one or 

 two inches, when the plants 

 were removed and placed in 

 alcohol. The new plants, thus 

 obtained by vegetative propa- 

 gation, grew rapidly in the 

 size of their leaves and were 

 perfectly healthy and normal 

 in structure. Thus, I verified 

 the supposition made thirteen 

 years ago that Dionaea can 

 reproduce . itself vegetatively 

 by means of leafy branches 

 proliferated in place of the 

 inflorescence branches, — ^John 

 W, Harshberger, University 

 of Pennsylvania. 





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Fig. I. — Dionaea muscipula 



