22 J. W. DAWSON ON CRETACEOUS AND TERTIARY FLORAS 
entire, but this is not certain. The leaf of this species is not unlike that of the other Creta- 
ceous beeches, as F. polyclada, Lesq., and F. cretacea, Newberry, and also resembles the F. 
Antipofi of Heer, from Sachelin Island on the coast of Siberia. This Sachelin flora is 
regarded by Heer as Tertiary, but it has a very Cretaceous aspect. 
Collected at Peace River by Dr. Selwyn. 
9. LAUROPHYLLUM DEBILE, S.N. (Fig. 7, 7a.) 
Leaf elongate, oblong, 6 to 7 centimetres long, and 2.5 broad in middle, thin and 
delicate, with a slender midrib, obsolete alternate veins, at angle of 40° to 50°, and dense 
reticulation of fine veinlets (magnified in fig. 7a) ; margin entire, base narrowing to petiole, 
apex not well seen, but probably acute. 
Collected by Dr. Selwyn at Forks of Peace River, and by Dr. G. M. Dawson at east 
branch of Peace R. 
10. PROTEOIDES LONGUS, Heer. (Fig. 8.) 
Heer, Kreide Flora, p. 10, Plate 31, Fig. 5. 
The venation of this leaf cannot be seen ; but it is not distinguishable from the species 
above named. 
Collected by Dr. Selwyn at Forks of Peace River, by Dr. G. M. Dawson, at east branch 
of the same. 
11. BETUIA, Sp. 
In the collections from Peace River several fragments with impressions of bark having 
markings similar to those of the bark of the white birch tree, were found. 
12. POPULITES CYCLOPHYLLA, Heer. (Fig. 9.) 
Lesquereux, Cretaceous Flora, p. 59, plate IV. 
This poplar is so near to that above named, that bearing in mind the variability of the 
leaves of poplars, I do not think it well to separate it. Lesquereux’s specimens are from 
the Dakota formation in Nebraska. 
Collected at Peace River by Dr. Selwyn. 
13. Diospyros NITIDA, 8. N. (Fig. 10.) 
Closely allied to D. anceps, Lesquereux, but more narrow and acute, with stouter 
midrib and veins at angle of 40° to 45°, and less curved. Lesquereux’s species seems to be 
different from that described by Heer in the Flora Helvetica, under the same name. 
Lesquereux’s specimens were from the Dakota Group. Those in the present collections 
were obtained by Dr. Selwyn and Dr. G. M. Dawson, in the canyon of Peace River.. 
14. MAGNOLIA TENUIFOLIA, Lesqr. 
Lesquereux, Cretaceous Flora, Page 92, Pl. XXI. 
Lesquereux’s specimens were from the Dakota Group. Those in the present collections 
were collected by Dr. Selwyn and Dr. G. M. Dawson, at Coal Brook and Peace River. 
15. MAGNOLIA MAGNIFICA, 8. N. (Fig. 11.) 
Leaf large, 20 centimetres or more in length. Greatest breadth, less than one half the 
length. Margin entire, midrib strong, in large specimens becoming broad near base. Veins 
