Section IV, 1889. 



69 



Trans. Koy. Soc. Canada. 



V. — On Fossil Plants collected htj Mr. B. A. McConnell , on Alaclrnzie River, and htj 

 Mr. T. C. Weston, on Bow River. By Sir J. William Dawson, LL.D., F.R.S., 

 &C. [Plates X & XL] 



(Read May 7, 1889.) 



Specimens from Mackenzie River. 



The fossil plants collected on the Mackenzie by Dr. Richardson, were described by 

 Heer in the " Flora Fossilis Arctica ", Vol. I, in 1868. vSubsequently, in 1880, in the con- 

 tinuation of the same work, he published descriptions of additional specimens collected 

 by Dr. Rae, Messrs. R. H. Scott and W. Hardesty and Bishop Bompus. In the same 

 publication Schroeter describes fossil woods collected on Mackenzie River. 



The species described in these papers are not numerous, being twenty-three in all, 

 inclusive of a minute parasitic fungus, besides three species of fossil wood. A list of 

 these species is given in my paper on Laramie Plants (Trans. Roy. Soc. Canada, Vol. I, 

 1882, p. 32), and which I repeat here for reference, with some emendations : — 



1. Xylomites boreali?, Heer (growing on leaves). 



2. Glyptostrobus Uugeri, Ur. * 



3. Sequoia LangsdorfB, Brongt. * 



4. Taxodium distichum, (Miocenum.) * 



5. Smilax Franklini. 



6. Populns arctica, Hr. * 



7. P. Kit'liardsoni, Hr. * 



8. P. Hoolœri, Hr. * 



9. Salix Raeana, Hr. * 



10. Betula niacrophylla, Gpt. 



11. Cory his McQuarrii, Forbes. * 



12. Quercus Olafseiii, Hr. 



1.3. Platanus aceroides, Hr- 



14. Juglans acuminata, Brongt. 



15. Viburnum Nordenskioldiii, Hr. 



16. Pterospermites spectabilis, Hr. 



17. Pt. dentatus, Hr. 



18. Tilia Malgreni, Hr. 



19. Phyllites aceroides, Hr. 



20. Hedera MacClurei, Hr. 



21. Magnolia Nordenskioldii, Hr. 



22. Carpolithes seminulum, Hr. 



23. Antholithes amissus, Hr. 



On referring to my notices of plants of the Laramie in Dr. Gr. M. Dawson's " Report 

 on the 49th Parallel," 18*75, and to my paper in the Transactions of this Society in 1887, 

 it will be seen that these plants are in great part identical with those of the Upper Lara- 

 mie series of our Northwest Territory. I have, in the above list, added an asterisk to each 

 species found in the Lignite Tertiary, Fort Union or LTpper Laramie series on the 49tl^ 

 parallel, and at the Sotiris River, Calgary, etc. It is also just possible that some of the 

 others may be species found in these places, though known by différent names. 



The present collections furnish little that is new ; bitt the .specimens are in a fine 

 state of preservation. As the Upper Laramie or Fort Union Group is still held by some 

 palœobotanists to be Miocene, and as it is equivalent to beds in Grreenland, Alaska, etc., 

 also until recently called Miocene, it may be interesting to note the localities of the spe- 



