THE EOCKY MOUNTAIN REGION OF CANADA. 17 



Collected byR. B.Tyrrell in the Lower Laramie, at the Red Deer and Rosebud Rivers. 

 This plant is associated at several localities vpith Pistia and Lemna, and in this respect the 

 beds holding- it conform in their flora to the Belly River series on the South Saskatchewan. 

 The same remark applies to the beds at Pincher Creek, Berry Creek, etc., from which places 

 small collections have been obtained. 



Abietites Tyrrellii, S. N. 



Branches stout, with broad and thick leaves, spirally disposed, showing no ribs, and 

 slightly narrowing and decurrent on prominent leaf-bases. 



Fine casts of this plant occur in hard clay ironstone at Berry Creek. Collected by R. 

 B. Tyrrell. 



Salisruri.a.. 



ïSeeds or nutlets referable to this genus were observed in the collections from several 

 places in the Lower Laramie. 



The above are all from the Belly River series or the Lower Laramie, in which also 

 occur abimdant remains of a Sequoia which I have referred to S. Rekhenbachii. The 

 remaining species are from the Upper Laramie or Porcupine Hill series. 



Platanus nobilis, Newberry. 



Newberry, Later Extinct Floras of America. 



Large numbers of these fine leaves occur in the Upper Laramie sandstone near Cal- 

 gary. They show that the peculiarities of A-enation referred to by Lesquereux in his 

 notice of this species, are only varietal. The leaves from Calgary exhibit the auricles or 

 supplementary leaflets first described by me in the specimens collected by Dr. Selwyn at 

 Souris (Geol. Survey of Canada, 1879.) 



Platanus Raynoldsii, Newberry. 



Newberry, loc. cit. 



This species is also abundant and mixed with the former, at Shaganappi Point, near 

 Calgary. Its leaves present many differences in size and form, but these pass into one 

 another. 



POPULUS. 



In the same beds with the above, are leaves of several species of Poplar, which I refer 

 provisionally to P. acerifoUa, P. genetrix and P. cordifolia, of Newberry. 



Sassafras (Araliopsis) Burpeana, S. N. 



Leaf three-lobed, long petioled, lateral ribs at angle of about 30 ® to middle rib. 

 Secondary veins very strong, the inner ones joining at an obtuse angle in the palm of the 

 leaf. Leaf probably trifid at apex, and somewhat rounded and auricixlate at base. 



Collected by Mr. Burpee near Calgary, Upper Laramie sandstone. 



Viburnum oxycoccoides, S. N. 



Leaf large, tri-lobed, central lobe long and acute, lateral lobes rounded at margin. 

 Auriculate with two small roimded leaflets at base. Venation almost precisely as in the 



Sec. IV., 188.5. 3. 



