81. PRUNUS N1GR 



Canada P> 



TRANSVERSE SECTION 



RADIAL SECTION 



TANGENTIAL SECTJON 



Canadische Pflaume. 



Pninellier de Canada, 



Sp. Ciraelo de Canada. 



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



