FLORA OF THE GREEN RIVER GROUP. 187 



pointed, are distant and variable in length, separated by obtuse sinuses; 

 the acumen is sharply pointed. 



The relation of this species is distinctly indicated to Ilex dryandrcefolia, 

 Sap., "Et.," i, 2, p. 89, pi. x, fig. 8, a leaf which is much like fig. 2 of our 

 plate, and which merely differs by the secondary nerves being at right 

 angles to the midrib, rather curved backward than upward, a difference 

 scarcely noticeable enough to authorize specific distinction. The Ilex 

 odora, Sieb. and Zucch., of Japan, has the leaves remarkably similar to 

 both these fossil species. 



Hal.— Florissant. U. S. Geol. Expl. Dr. F. V. Hayden. 



Ilex gra n di folia, sp. nov. 



Plate XXXVIII, Fig. 1. 



Leaves large, membranaceous, oblauceolate or obovate, irregularly dentate; lat- 

 eral nerves very oblique, more or less curved iu traversing the blade, camptodrome, 

 joiued to the borders and the teeth by anastomosing nervilles. 



The leaf seems to have been very large, the fragment preserved (the 

 upper half) being 8 centimeters long and 5 centimeters broad. It appears 

 to have been rounded at the apex and gradually narrowed to the base, the 

 lower lateral nerves being very oblique and following the borders in curves. 

 The nervation is irregular. The lateral nerves, diverging about 30°, are 

 distant, parallel, with few intermediate tertiary shorter thin veins, and in 

 their curves they generally ascend to near the borders, but also sometimes 

 curve in the middle of the areas, anastomosing with the divisions of the 

 first nerves above and sending strong outside branches toward the bor- 

 ders. The teeth are somewhat unequal but not as large as in the preceding 

 species, more or less inclined upward, acute. The subdivision of the 

 primary areas is by nervilles at right angles to the nerves, anastomosing 

 generally at right angles with the thinner tertiary veins, producing a large 

 irregularly quadrate areolation. 



Hab.— Florissant. U. S. Geol. Expl. Dr. F. V. Hayden. 



