81. PRUNUS NIGRA, AlT 

 Canada Hum. 



TRANSVERSE SECTION, 



RADIAL SECTION 



TANGENTIAL SECTION 



Prunellier de Canada, 



Canadische Pflaume, Si. Prunellier de 

 8 p. Cimelo de Canada. 



Published and Sections made by Romeyn B. Hough, B. A., Lowvitle. N Y.. U. S. A. 



