156 UNITED STATES GEOLOGICAL SURVEY— TERTIARY FLORA. 



Quercns Pealei, Lesqx. 

 Plate XX, Fig. 6. 

 Quercus Pealei, Lesqs., Anuiial Report, 1871, p. 297; 1872, p. 406. 



Leaf coriaceous, small, cuneate, and entire from the middle to the base (petiole broken), more 

 abruptly narrowed to an obtuse point, and uudulato-dentate in the upper part; lower pair of secondary 

 veins from the base of the leaf, opposite, at a more acute angle of divergence, and camptodrome ; upper 

 pair alternate, distant, sparingly branching, craspedodrome. 



This small leaf, four centimeters long and two centimeters broad in the 

 middle, may be referable to the former species. The character of the 

 nervation appears at first very different; but, comparing fig. 4 to fig. 6 of 

 the same plate, the analogy in the position and direction of the secondary 

 veins becomes more evident, for in fig. 6, as indicated by the festoons of 

 the tertiary veins or branches along the borders above the broken part, 

 the leaf has, like that of fig. 4, a marginal vein, whose place is taken on 

 the other side by a camptodrome secondary vein. The more marked differ- 

 ence which induced me to separate this species is the more evidently 

 coriaceous substance of this leaf and the discernible nervilles. It appears 

 intimately related to Quercus fagifolia and Q. triangularis, Goepp. (Schoss. 

 Tert. FL, pp. 14 and 15, pi. vi, figs. 9-17), — two species described by Schimper 

 as Parrotia fagifolia. 



Habitat. — Six miles above Spring Caiion, Montana {Dr. A. C. Feale). 



Near Fort Ellis, Montana {Jos. Savage). 



<tiierciis Haidiiig^eri, Ett 



Plate XX, Figs. 9, 10. 



Quercus Haidingeri, Ett., Foss. Fl. v. Vieu., p. 12, pi. ii, fig. 1.— Heer, Fl. Tert. Helv., ii, p. 53, pi. Ixxvi, figs. 

 5, 7, 8, 10, 14.— Gaud., Contr., ii, p. 42, pi. iii, fig. 6.— Lesqx., Annual Report, 1874, p. 313. 



Leaves snbcoriaceous, broadly lanceolate, acuminate, narrowed to the base; borders creuulato- 

 serrate; lateral nerves nnequidistant, sparingly branching, effaced toward the borders, camptodrome. 



The American leaves representing this species are slightly larger than 

 those of the European Tertiary, especially that of our fig. 10. They agree, 

 however, so well by all their characters with those described under this name, 

 that I consider the identity as undeniable. The size is from ten to fourteen 

 centimeters long, and three and a lialf to five centimeters broad below the 

 middle. The largest leaf in Heer {loc. cit., fig. 4) is as long as that of our fig. 

 9, and slightly narrower. The narrowly ovate-oblong shape of the leaves, 

 tapering upward to an acumen and slightly more rapidly narrowed incurving 

 to the base, the crenulate or dentate borders, are the same, and the inequi- 

 distant secondary nerves, some of them simple, some sparingly branching, 



