No. 4S7] 



PLEISTOCENE FLORA OF CANADA 



447 



tliis species has been recorded on previous occasions as occurring 

 in the Don deposits of which it is a recognized feature. 



Picea nigra Link. — This species is a constant constituent of the 

 Don flora and has been recognized in nearly all previcjus coUec- 



FiG. 2. Acer toroiitonienfiis n. s\i. X 0.55. 



tions. As now, it is always represented by fragments of wood, 

 usually small branches in a more or less altered condition. 



Ostrya virginica Willd. — Although not recorded as embraced in 



