230 UNITED STATES GEOLOGICAL SURVEY— TERTIARY FLORA. 



file upper part is gradually tapering upward, and then contracted to a slightly 

 obtuse acumen, as in the leaves of F. pubescens. Lam., and F. Americana, 

 Linn., to which this fossil species is related. 



Habitat. — Golden, Colorado; communicated in fine specimens by Rev. 

 A. Lakes. 



Fraxinus Brownellii, sp. nov. 



Leaf large, apparently oval, obtuse, obliquely truncate on one side at the top, and obtuse on the 

 other, rounded to the inequilateral base ; borders denticulate. 



The leaf, of which the point is apparently broken, is nine centimeters 

 long, and five centimeters broad in the middle, rounded to the base, and 

 descending deeper on one side than on the other. The borders are marked, 

 especially in the middle, by small sharp teeth, close and turned upward. By 

 this character and its shape, it greatly differs fronl the former species, as 

 also by its apparently thin texture; the nervation only is of the same type. 

 This leaf, perhaps deformed by compression, is irregular in its outlines; 

 contracted above the middle on one side, it seems obliquely cut at the top 

 on the other. Though much larger, it is comparable to F. Ulmifolia, Sap. 

 (Et., iii, p. 91, pi. ix, figs. 17-13), whose leaves, irregular, also have a similar 

 kind of nervation, and the borders sharply serrate. The teeth are longer 

 and more irregular in the European species than in. the one received from 

 the Miocene of the Rocky Mountains. 



Habitat. — Castello's Ranch, near South Park, Colorado {Prof. W. A. 

 BrownelP). 



DIOSPYRINEvE. 



ebenacej:. 



DIOSPYEOS, Linn. 

 The numerous species of this genus are now, with few exceptions, trop- 

 ical and equatorial, especially distributed in Asia and on the Eastern and 

 Western Indian Islands. Europe has none in its present flora; North Amer- 

 ica has only one, the well known Persim mow, Diospyros Virginiana, Linn., which 

 inhabits the Atlantic slope from Florida to Southern New York, middle of 

 Ohio, etc. Japan has one also, D. Kaki, Linn., whose fruits are extremely 

 pleasant to the taste. In the geological times, the genus was apparently 

 widely distributed in the northern hemisphere. From the Cretaceous for- 

 mations, already. Prof Heer has described one species from Greenland, and 

 another from the Dakota group of Nebraska, where two others still have been 

 recognized, and published in the Cretaceous Flora, vol. vi of the Reports of the 



