152 DESCRIPTION OF SPECIES. 



CARPINUS, Linn. 

 " IT. S. Geol. Rep.," vii, p. 142. 



Carpinus grandis, TJng. 



Ibid., p. 143, pi. xix, fig. 9; lxiv, figs. 8-10. 



Carpinus attenuata, sp. nov. 



Plate XXVII, Fig. 10. 



Leaf large, narrowed downward from the middle and upward to an acuminate 

 point, slightly unequilateral at base ; borders doubly dentate ; lateral nerves oblique, 

 straight, or slightly curved in passiug up to the borders, branching near the borders, 

 entering the primary teeth by their ends and the intermediate ones by their branches. 



This leaf, 11 centimeters long, 5£ centimeters broad in the middle, its 

 widest part, is equally narrowed upward and downward, with borders 

 cut by large teeth entered by the secondary nerves, and generally two 

 smaller ones intermediate or on the lower side of the primary teeth. Tbe 

 leaf appears to have been somewhat unequal at the base, but the broader 

 side is lacerated ; the veins are, however, equally oblique at the base and 

 not more open on one side. The leaf closely resembles Carpinus alnifolia, 

 Goepp., "Schoss. Fl.," p. 19, pi. iv, fig. 11, merely differing by the border 

 teeth being a little larger, and by the more distinctly narrowed and elon- 

 gated base. Schimper unites this last species to C. ostryoides of Goepp., 

 /. c, figs. 7-10. Fig. 7 represents a much smaller leaf, but it is narrowed 

 to the base nearly in the same degree as in that of Florissant. 



Hah. — Florissant. Princeton Museum, No. 258. 



Carpinus fraterna, sp. nov. 

 Plate XXVII, Figs, 12-14. 



Leaves small, lanceolate, rounded to the short petiole ; borders minutely, sharjily, 

 doubly serrate ; lateral nerves close, numerous, oblique and straight to the borders, 

 branching near the borders. 



The species is of the same type as Carpinus Americana, Linn., some 

 of its varieties having leaves as small and of the same pattern. They are 

 generally more coarsely or distinctly serrate than in the fossil species; the 

 leaves are also generally larger. 



#^._Florissant. U. S. Geol. Expl. Dr. F. V. Hayden. 



