■46-i MEMOIRS OF THE XEW YORK BOTAXICAL GAEDEX 



PLATE 47 



PAGE 



Specimens introduced for comparison 



Figure 1. Acer pleistocenicum Penhallow 412 



FiGiTJE 2. Acer torontoniense Penhallow 412 



Type specimens. Pleistocene. Don River Valley, Toronto, Canada. 



