14 SIE J. W. DAWSON ON THE MESOZOIC FLOEAS OF 



Aralia, Sp. 



Fragmouts of a large loaf which may be A. Saportana, Lesq., but is too imperfect for 

 certain determinatiou. 



Collected by a. M. D. at Middle Branch, North Fork, Old Man Eiver. 



Aralia eotundata, S. N. (Plate IV. Fig. 5.) 



Leaf large, 1 centimetres long, with five strongly marked ribs at angles of about 20°. 

 G-eneral form broad cuneate or fan-shaped, with Rxe rounded terminal lobes. 



Collected by T. C. W. at Mill Creek. 



Aralia Westonii, S. N. (Plate lY. Fig. 6.) 



Leaf five-parted and five-veined, basal angle approaching to 90^. Central lobe lan- 

 ceolate, much larger than next lobes, and these larger than lateral lobes. Surface shining 

 and coriaceous. 



Abundant in Mr. "Weston's collections from Mill Creek. The generic name is quite 

 conjectural, as the finer textures of the leaf are not apparent. At first sight, in size and 

 general aspect, the leaves resemble those of Acer campestre, but are different in details. 



Hedera ovalis ? Lesquereux. 



Lesquereux, Cretaceous Flora, p. 91. 



Form circular to round oval, venation of hcderaceous type, and so much like that of 

 the species above named that I think it may safely be referred to it. 



Collected by T. C. W. at Mill Creek. 



Magnolia magnifica, Daivson. 



Dawson, Trans. Eoy. Soc. Can., Vol. I. Sec. IV. 



A large leaf in Mr. "Weston's collections from Mill Creek is similar in form to the leaf 

 of the Peace River siiecies above named, but the venation is not preserved. 



Paliurus montanus, S. N. 



Leaf large, about 8 centimetres long, membranous, oblong or long-ovate, entire, three- 

 ribbed, but middle rib greatly dominant and sending off curved veins toward apex ; lateral 

 veins slender, near the margin and curved parallel with it. 



This genus is represented by species different from the above in the Dakota group 

 and in Greenland. It seems difficult to distinguish fossil leaves of this type from those of 

 the allied genus Ceanothvs. 



Collected by G. M. D. at Middle Branch, North Fork, Old Man River. 



Paliurus ovalis, S. N. (Plate IV. Figs. 4 and 8.) 



Ordinary leaf five centimetres long, and 2.5 wide, almost perfectly elliptical, but a little 

 more obtuse at apex than at base. Mibrib strong, lateral veins very faint, in some speci- 

 mens obsolete. 



These leaves difll-r little in form from P. memhmnacevs, Lesquereux, from the Dakota 

 group, but are more coriaceous. 



Collected by T. C. "W. at Mill Creek. 



JUGLANDITES ORETACEA, S. N. 



Leaf small, oval, crenate or bluntly toothed, membranous, with four pairs of veins, 

 curving in a camptodrome manner. Surface rough, ordinary length 4.5 centimetres. 



