FLORA OF THE GREEN RIVER GROUP. 163 



CELTIDE.E. 



CELTIS, Touri 

 "IT. S. Geol. Rep.," vii, p. 191. 



Celtis McCosliii, sp. nov. 



Plate XXXVIII, Figs. 7, 8. 



Leaves loug-petioled, narrowly ovate, lanceolate-acuminate, more or less unequi- 

 lateral at base; lower lateral nerves at a more acute angle of divergence, ascending 

 higher across the borders, curved like the upper (4 to 6 pairs), all camptodrome, attached 

 to the borders by anastomosing veiulets. 



The leaves, 5 to 6£ centimeters long, 2 to 2k centimeters broad below 

 the middle, where they are widest, are not very but distinctly unequi- 

 lateral at the rounded base, at least in fig. 7. By the form of the leaves 

 the species is closely allied to Celtis jprimigenia, Sap., "Et.," ii, 2, p. 263, 

 pi. vi, fig. 7. The nervation and the denticulation of the leaves are of the 

 same character. The leaves are also remarkably similar to those of C. 

 occidentalis, Linn., var. Texana, a form whose leaves, nearly equilateral at 

 base, are minutely serrate. The Texas leaves are subcordate at base or 

 round, as in fig. 8. 



Hab. — Florissant and Randolph Co., Wyoming. Princeton Collection, 

 No. 794, U. S. Geol. Expl. Dr. F. V. Hayden. 



MORE.E. 



FICUS, Tourn. 

 Ficus lauceolata, Heer. 



Fie us Jynx, Ung. 



Fie us niultinervis, Heer. 



Ficus arenacea, Lesqx. 



" U. S. Geol. Rep.," vii, p. 191. 

 Ibid., p. 192, pi. xxviii, figs. 1, 5. 

 Ibid., p. 193, pi. xxviii. fig. 6. 

 Ibid., p. 194, pi. xxvii, figs. 7, 8. 

 Ibid., p. 195, pi. xxix, figs. 1-5. 



Ficus Ungeri, Lesqx. 



Plate XLIV, Figs. 1-3. 

 Ibid., p. 195, pi. xxx, fig. 3. 



This species is finely represented by the three figures of our plate. 

 They show not merely the variable size of the leaves, but their true shape 

 and the short petiole abruptly thickened at base. The leaves, are oblong 



