[pENHALLow] THE PLEISTOCENE FLORA OF CANADA 69 



ing species. Q,. obtusiloba is now found in southern Ontario, and particu- 

 larly about the Bay of Quinte. (Macoun.) 



Maclura adrantiaca. 



The most interesting of all the specimens derived from the Inter- 

 glacial is the osage orange. Well preserved specimens of the wood of 

 this plant were sent to me in 1895 by Prof. Coleman/ and by him obtained 

 from the Don valley at Jail Hill. It thus belongs to the same period as 

 Quercus obtusiloba and Fraxinus quadrangulata. This plant is of a more 

 distinctly southern type than an}- of the others, and it therefore jîossesses 

 peculiar interest as indicating the climatic conditions which must have 

 prevailed at the time the Interglacial of the Don was laid down. At the 

 present time the osage orange is chiefly found ranging from Kansas and 

 Missouri to Texas. It nevertheless is sparingly found in Ontario at the 

 present time. Sir Wm. Dawson informs me that in former years he has 

 had specimens of the wild osage from that region. It is certainly cvilti- 

 vated there for hedges, and Prof. Macoun is inclined to consider that the 

 wild i^lants are escajîes. 



Larix churchbridgexsis. 



Two specimens of wood were described by me in 1892 under the 

 above name.- The material was forwarded to me by Mr. J. B. Tyrrell, of 

 the Geological Survey, and had been derived fi-om two localities in Mani- 

 toba. The horizon at which these woods were found is probably Inter- 

 glacial, although this view must be regarded as somewhat provisional. 

 Both specimens clearly represented the same species, which was found to 

 possess characters common to both Larix occidentalis and L. americana. 

 It was, therefore, thought desirable to refer them to a provisional species 

 the name of which would be indicative of the locality. 



In addition to the material received from the Don valley, and de- 

 scribed as above, there were a number of fragments of leaves which were 

 too much broken up to admit of satisfactory determination. They were, 

 nevertheless, in all probability those of willows and poplars.^ 



1 Journ. Geo!., iii., 635. 

 ^Amer. Geol., ix., 368. 

 •' .Journ. Geol., iii., 635. 



