[PEeNHALLOwW] CRETACEOUS AND TERTIARY PLANTS OF CANADA 57 
From this it appears that there is a very close resemblance 
between the fossil and the leaves of existing Clintonias, a resemblance 
so close not only with respect to general features, but with respect 
also, to details, that I do not hesitate to assign the fossil to the genus 
under the name of C. oblongifolia. 
POPULUS UNGERI, Lesq. 
Lesquereux, Tertiary Flora, VII., 175, 12) GO Yay 
LL 
Denver Group, Golden, Colorado. 
Eocene of the Red Deer River (Paskapoo Series), N.W.T. 
One nearly perfect specimen evidently identical with Populus 
ungeri of Lesquereux, originally described by him from the Denver 
Group of Golden, Colorado. 
PoPULUS OBTRITA, Dn. 
Dawson, Trans. R. Soc. Can., VIII., iv., 82 (1890). 
Lower Miocene of the Similkameen Valley, B.C. 
Eocene of the Red Deer River (Paskapoo Series), N.W.T. 
The original description of this species was based upon material 
from the Lower Miocene of the Similkameen Valley, B.C., and the 
diagnosis is supplemented by a figure of a very complete specimen. 
The peculiarities of the species are to be found in the broadly ovate, 
or almost reniform shape of the leaf, its dentate margin and especially 
the venation which embraces two strongly defined veins curving 
strongly upward from the summit of the petiole, thus giving rise to 
one strong lateral in each case. 
The material from the Red Deer River embraces several specimens, 
three of which are very perfect and admit of determination beyond 
all doubt. 
PoPULUS DAPHNOGENOIDES, Ward. 
Ward, Bull. U.S. Geol. Surv., No. 37, p. 20. 
Dawson, Trans. R. Soc. Can., VIII., iv., 83 (1890). 
Fort Union Group of Seven ‘Mile Creek, Montana. 
Lower Miocene of the Similkameen Valley, B.C. 
Eocene of the Red Deer River (Paskapoo Series), N.W.T . 
Represented by one small specimen, evidently a young leaf not 
more than 2-5 em. broad, from which the upper third has been removed. 
The base, margin and venation, so far as they appear, are quite perfect 
