knowlton.] DESCRIPTION OF SPECIES. 39 
arising at an angle of from 25° to 45°, curving upward, camptodrome ; 
liner nervation not preserved. 
The leaf figured is the only specimen obtained of this species. With 
the exception of the petiole it is preserved entire, being 7.5 cm. in 
length and 2.5 cm. in width at the broadest portion, which is about the 
middle. 
I take pleasure in naming this species in honor of Mr. T. W. Stanton, 
by whom it was collected. 
Habitat.— Coalville, Utah. 
Salix sp. 
Pi. VII, fig. 2. 
Salix elongata, O. Web., Knowlton, Bull. IT. S. Geol. Survey No. 106, p. 42 (1893); 
Bull. Geol. Soc. Am., Vol. VIII, p. 150 (1897). 
In the papers above mentioned these forms were doubtfully referred 
to Salix elongata, but a reexamination shows that this determination is 
not satisfactory enough to warrant retaining them under this name. 
Hardly more than the outline is preserved, and it is impossible to go 
with certainty beyond the statement that they are probably leaves ot 
Salix. 
Habitat. — Coalville, Utah. 
Quercus Lesquereuxiana Kn. 
PL VII, fig. 1. 
Quercus Lesquereuxiana Kn., Bull. U.'S. Geol. Survey No. 152, p. 194 (1898). 
Quercus acroclon Lx., [non Massalongo 18531, Am. Jour. Sci., 2d ser., Vol. XLV, p. 205 
(1868); Tert. Fl., p. 158, PI. XIX, figs. 11-13 (1878). 
This species was originally described by Lesquereux in 1868 from 
specimens obtained by Dr. F. V. Hayden from " Kock Creek on the 
Laramie Plains." Of the three figured specimens (Tert. FL, 1. c), only 
two, the original of PI. XIX, fig. 13, and what appears to be the counter- 
part of fig. 12, are preserved in the United States National Museum, 
both bearing the number 178. The matrix is a hard grayish shale. 
In the annual report of the United States Geological and Geograph- 
ical Survey of the Territories for 1872, page 389, Lesquereux describes 
another leaf of this species from Carbon, Wyoming, but this specimen 
is not now, and appears never to have been in the collection of the 
National Museum. It is described as follows: "The ovate pointed leaf, 
wedge-shaped to the petiole, has the borders deeply cut into large, 
sharp teeth, with straight, mostly simple, secondary veins, passing 
at an acute angle to the point of the teeth. In this new specimen, 
the upper secondary veinsare slightly curved in ascending to the bor- 
ders." This agrees in the essential characters with the original descrip- 
tion, but in the absence of that specimen or of any since found at this 
locality, it is more or less open to question. The collections made at 
