382 



2. JUGLAKS ALKALINA, SJ). IIOV. 



Leaves pinnately compound; Ipaflets lanceolate, tapering upward to a 

 long acumen, either narrowed or rounded to a short petiole; borders 

 crenulate; lateral veins distant, mostly alternate, parallel, separated by 

 short intermediate tertiary veins, curving in passing toward the borders 

 at an open angle of divergence, and ascending high along them in fes- 

 toons; nervillesin right angle to the veins, branching in the middle, and 

 forming by subdivisions irregularly quadrate or polygonal meshes. 



This species is represented by four leaves, and its characters distinct. 

 It is comparable to Jnglandites 2Jeramplus, Sap., and Juglandites cernuus^ 

 Sap., both of the Sezane flora, partaking of some of the characters of 

 both. It is, however, still more intimately allied to Juglans Bilinica^ 

 Heer (Flor. Tert. Helv., Ill, p. 90, PI. CXXX, figs. 5-19), from which it 

 merely differs by the position of the lateral veius at a more acute angle 

 of divergence following higher u^d along the borders, and by the thicker 

 and more numerous tertiary veins. 



Habitat. — Alkali station, ^Y^lliam CleJjurn. 



3. Carpites viburni, sjj. nov. 



Seeds or nutlets cordate obtuse, five to seven millimeters long, three 

 or four millimeters broad, convex, grooved in the middle from the point 

 to the base, surrounded by a membranaceous pellicle, the remains of an 

 apparently fleshy outer envelope. They resemble seeds of a similar kind 

 which I have found in great quantity at Golden, and referred to the 

 genus Viburnum. Their form is like that of the seeds of Viburnum 

 Whynqyeri, Heer (Spitz. Flor., p. 60, PI. XIII, figs. 23 and 27). 



Habitat. — Alkali station, William Clcburn. 



These three species do not authorize a conclusion in regard to their 

 geological age. As Mr. Cleburn informs me that a number of fragments 

 of palm-leaves have been found in connection with his specimens, I am 

 disposed to consider these plants as Eocene. None of these species has 

 any relation to Cretaceous types, and the serrulate borders of the leaves, 

 so marked in two species, is a character well defined in the leaves of the 

 Sezane flora, and scarcely if ever In those of the Cretaceous. 



XEW SPECIES OF TERTIAKY FOSSIL PLANTS BRIEFLY 



DESCEIBED. 



The following-described species have been discovered since the publi- 

 cation of the last annual report of Dr. F. V. Hayden's Geological Sur- 

 vey of the Territories. They are represented by specimens sent from 

 different localities. These are indicated, with each species, as well as 

 the name of the discoverer. All these species have been figured for the 

 second volume of the Contributions to the Fossil Flora of the Western 

 Territories. 



1. Spheria ehytismoides, sp. nov. 



The spots formed by this small fungus upon the bark of some stems 

 and the leaves of a Myrica are composed of circular j)erithecia, placed 

 five or six in a circle, forming thus a small crenulate ring. The 

 perithecia become connected sometimes, apparently by decomposition ; 

 they are, however, generally separated. The size of the spots varies 

 from one to two millimeters. 



Habitat. — Black Butte, upon Caulinites Sparganioides. 



