OF THE LARAMIE FORMATION OF CANADA. 31 
JUGLANS RHAMNOIDES, Lesquereux. 
Lesquereux, Tertiary Flora. 
This species is thus described by Lesquereux :—“* Leaves oval, narrowed in a curve 
or rounded to the petiole, very entire; lateral veins thin, distant, curved in passing to the 
borders, camptodrome.” 
Lesquereux’s specimens were from Spring Cañon, Montana, also Black Butte, 
Wyoming, and Point of Rocks, Wyoming, all belonging to his Lower Lignitic or Laramie 
group, and he regards Newberry’s species from the Fort Union group, Cornus acuminata, 
as the same. The species is closely related to, if not identical with, Juglans acuminata, 
Brongt., of the European Tertiary. My specimens are from the Upper Laramie, Porcupine 
Creek. 
Collected by G. M. D. 
TRAPA BOREALIS, Heer. (Plate II, Fig. 19). 
TRAPA MICROPHYLLA, Lesquereux. 
Heer, Flora Alaskana. Dawson, Report on 49th Parallel, 1875. Lesquereux, Tertiary 
Flora. 
Fruits of Trapa, or water chestnut, referred by me to Heer’s Alaska species, were 
recognized in 1876 in the collections of Dr. G. M. Dawson from the 49th parallel, from 
beds belonging to the Lower Laramie group. More recently, Lesquereux has found, in 
beds probably of Laramie age at Point of Rocks, leaves which he has named Trapa micro- 
phylla, and attributes to this genus. In Mr. Tyrrell’s collections from the Red Deer and 
Rosebud Rivers, there are fruits similar to those of Heer’s species, and leaves not dis- 
tinguishable from those described and figured by Lesquereux. We have thus a probability 
that the fruits and leaves belong to the same species. 
Lesquereux’s description of the leaves is as follows :—‘“ Leaves small, (round ?) or 
broadly ovate and obtusely rounded to the petiole, borders denticulate from below the 
middle upward, nervation ternate from the top of the petiole, or irregularly pinnate, 
lateral nerves at an acute angle (15° to 20°), flexuous with dichotomous branches, all 
craspedodrome, areolation distinct, polygonal, minute, by subdivisions of the veinlets at an 
acute angle.” Heer’s description of the fruit is as follows :—“* Nuts two-horned, narrowed 
at base, striate longitudinally, widened in the middle, with two spines which are long, 
divergent and acute; the apex exsert and narrowed.” 
These fruits and leaves are all from the Lower Laramie, with the exception of one 
doubtful example from the Upper Laramie of Great Valley. The localities are Bad Lands. 
(G. M. D) Red-deer and Rosebud Rivers (Tyrrell), and Pincher Creek (Weston). In some 
of these localities the leaves and fruits oceur together, and in some they are associated with 
Lemna scutata and Phragmites. 
The leaves seem to be very variable in form and dimensions, and in Mr. Tyrrell’s col- 
lections there are fragments of much larger leaves than any figured by Lesquereux. 
PHYLLITES VENOSUS, Newberry. 
Newberry, loc. cit. 
A leaf of very uncertain affinities; but it furnishes another point of accordance 
between the Canadian Laramie and the Fort Union group, Upper Laramie, Porcupine 
Creek. Collected by G. M. D. 
