190 DESCRIPTION OF SPECIES. 



TEREBINTHINE^E. 



JUGLANDEil. 



"U. S. Geol. Rep.," vii, p. 283. 



JUGLANS, linn. 



Juglans Schimperi, Lesqx. 



Ibid., p. 287, pi. lvi, figs. 5-10. 



Juglans denticulata, Heer. 



Ibid., p. 289, pi. lviii, fig. 1. 



Juglans Florissanti, sp. nov. 



Leaf large, lanceolate -acuminate from a rounded unequilateral base; lateral 

 veins thick, mucli curved in traversing the blade, camptodrome; borders dentate. 



The leaf is 11 centimeters long, 4J centimeters broad in the middle; 

 its surface is rough and altogether of coarse aspect — the primary and 

 secondary nerves being thick. The details of areolation and subdivisions 

 of the nerves are obsolete. It is comparable to a leaf of J. bilinica, 

 figured in Heer, "Fl. Tert. Helv.," p. 90, pi. cxxx, fig. 7, but it is thicker, 

 coarser, with more prominent nerves. 



Hub. — Florissant. Lacoe's Collection, No. 80. 



Jug-lans alkalina, Lesqx. 



"U. S. Geol. Rep.," Tii, p. 288, pi. lxii, figs. 6-9. 



Jug-lans costata, Ung-. 



Plate XXXIX, Fig. 5. 



Carya costata, Ung., "Syllog.," p. 41, pi. xxxix, fig. 16. 



Juglans costata, Ludw., "Palseontogr.," viii, p. 138, pi. lvii, fig. 7 (leaf); liv, fig. 15 (nut). 



Juglans (tcuminataf, Heer, Lesqx., Suppl. to Hayden's "Ann. Rep.," 1871, p. 8. 



Leaflets broadly oval, obtuse, slightly mucronate, somewhat unequilateral or turned 

 to one side, rounded at base to a short petiole; nervation camptodrome. Nut round- 

 ovate, short-pointed ; lobes of the seed simple, oblong. 



In the short description of the leaflet as J. acuminata?, loc. cit., I 

 remarked that it has exactly the same characters as the one figured by 

 Heer, "Fl. Tert. Helv.," pi. cxxix, fig. 6, which appears far different from 

 any other forms of this species, and that it is comparable to J. costata, 

 Ung., as figured by Ludwig, I. c. As one of the specimens of Florissant 

 has a nut very much like that published by the same author, I. c, the- 



