DESCRIPTIONS OF SPECIES. 77 



the one figured being the best. The texture was evidently thick and 

 leathery. The apex is erroneously represented in the figure, as subsequent 

 development of the specimen shows that it terminates in a long-drawn acute 

 point. Among described species this may be compared with Q. Nimrodis 

 Ung. (Foss. Fl. Sotzka, p. 163 [33], PL XXXI [X], figs. 1-3), and Q. 

 Meriani Heer (Fl. Tert. Helv., Vol. II, p. 53, PL LXXVI, fig. 12), but 

 in those species the marginal teeth are stronger and are not, as in this, 

 confined to the summit. The substance of the leaf of the specimens before 

 us was evidently very thick and leathery. 



Formation and locality : Tertiary (Miocene). Bridge Creek, Oregon. 



Quercus salicifolia Newb. 



PL I, fig. 1. 



Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1868), p. 24; Ills. Cret. and Tert. PL 

 (1878), PL II, fig. 1. 



"Leaves petiolate, smooth, thick, entire, lanceolate, abruptly pointed 

 at both ends; medial nerve strong, straight, or more or less curved; 

 secondary nerves of unequal size, strong near their points of origin, 

 becoming fine, flexuous, and branching as they approach the margins of 

 the leaf, where some of them inosculate by irregular curves, while others 

 terminate in the margins." 



Collected by Dr. F. V. Hayden. 



This species differs considerably in its general aspect from the willow- 

 like leaves with which it is associated, and must have been much thicker 

 and smoother. The midrib is very strong, terminating below in a thick, 

 but short, petiole. The lateral nerves are much less uniform and regular 

 than those of the leaves to which I have referred. They are at first strong, 

 but soon diminish, and many of them extend but halfway to the margin, 

 the others being unequally curved and branching irregularly or anas- 

 tomosing with each other. The finer details of nervation are not given 

 in the specimens before me, and perhaps more ample material will show 

 that our fossil should not be regarded as a Quercus, but, as far as its 

 characters are given, they agree best with those of that genus. The 

 texture of the leaf was evidently thick and its surface glossy, more so than 

 in any Salix now living; the nervation, too, is more of the oaks than 

 willows; the alternation of larger with smaller secondary nerves, all 



