DESCRIPTION OF SPECIES— CDPULIFERiE. 157 



with tertiary intermediate veins, are also of the same character as seen in 

 Hear (Joe. cil., figs. 7 and 14). This species is related by some of its characters 

 to the two former ones. As Heer and d'Ettingshausen, also, have found and 

 described the fruits of this species, its relation to this genus seems sufficiently 

 established. 



Habitat. — Green River, Wyoming, with Ficus arenacea, F. Gaudini, 

 Populus arclica, etc., described hereafter {Dr. F. V. Hayden). 



Que re us drytneja, Ung. 

 Plate XIX, Fig. 14. 



Quercus drtjmeja, Uug., Cblor. Protog., p. 113, pi. sxxii, figs. 1-4. — Heer, FJ. Tert. Helv., ii, p. 50, pi. Ixxv, 

 figs. 18, 19, 20.— Uug., Fo88. Fl. v. Sotzka, p. 33, pi. ix, figs. 1, 2.— Gaud., Coutr., i, p. 17, 

 pi. vi, fig. 4; vii, fig. 4; ii, p. 44, pi. iv, figs. 1-10. — Ett., Foss. Fl. v. Bil., i, p. 58, pi. 

 xvi, fig. 9. — Massal., Stud., p. 186, pi. xxiv, fig. 7. — Sism., Mater., p. 46, pi. xvii.fig. 1, etc. 



Leaf linear, apparently acuminate; borders equally distantly dentate; lateral veins in an acute 

 angle of divergence, nearly straiglit to the borders, craspedodrome. 



There is perhaps no sufficient evidence of the reference to this species 

 of the fragment figured here. It has the form and size of the leaf of Un- 

 ger's Fl. V. Sotzka {loc. cit.), fig. 2; the nervation is of the same character, the 

 secondary veins passing up in an acute angle of divergence and nearly straight 

 to the point of the teeth, and also the subfalcate shape of the linear-lanceolate 

 leaf is similar. In fig. 9 of the Bil. Fl. (he. cit.), the linear leaf, the angle of 

 divergence, 30°, of the veins, and the distant teeth, are of the same character 

 also; and, indeed, I do not know any other species, either fossil or living, to 

 which this fragment might be more legitimately referred. The difference in 

 the form of the teeth, either very acute or somewhat obtuse, is remarked also 

 upon the fragment, as well as upon the leaves figured by European authors. 



Habitat. — Near Castello's Ranch, Colorado {Dr. F. V. Hayden). 



Quercus Haydeiiii, Lesq;s. 



Plato XIX, Fig. 10. 



Quercus Haijdenii, Lesqx., Annual Report, 1869, p. 196. 



Leaf lyrate, sharply dentate toward tbe enlarged base and at the abruptly narrowed point; 

 nervation palmato-pinnate ; lower lateral veins branching, open, the upper one distaut, parallel, all 

 craspedodrome. 



This leaf has no relation to any fossil ones known to me. Its general 

 outline is somewhat like that of the leaves of Liriodendron. Enlarged at 

 the nearly truncate base, and there round-lobed, with dentate borders, it is 

 narrowed or strangled in the middle, and still enlarged upward, with its top 

 broadly deltoid and sharply dentate. The middle part of the leaf only has entire 



