FLORA OF THE GREEN RIVER GROUP. 109 



species from Olea Americana, its nearest relative, from which it differs by 

 smaller leaves and larger flowers. No trace of secondary veins is discern- 

 ible on those leaves. / 



Nine fossil species of Olea are described by authors from the Miocene 

 of Europe, none of which have a marked relation to this. 



Hah. — Florissant. Princeton Collection, No. 641. 



"U. S. Geol. Rep.," vii, p. 228. 

 Ibid., p. 229, pi. xl, fig. 3. 



FRAXINUS. Tourn. 

 Praxiuiis pi-fedicta, Heer. 



Fraxiniis Heerii, sp. nov. 



Plate XXXIII, Figs. 5, 6. 



Leaflets more or less uneqnilateral, rounded or narrowed to the short petiole, and 

 equally so from the middle to the acuminate bluut apex ; borders undulate ; lower 

 secondary nerves at a more acute angle of divergence, all unequally distant, curving 

 and reticulate at a distance from the borders ; nervilles flexuoos, at right angles to the 

 medial nerve. 



The leaflets. 5 to 7 centimeters long, li to 2 centimeters broad, are. 

 evidently, part of a compound leaf, as seen from the lower lateral leaflet, 

 which is nearly sessile and very unequilateral, and the upper a terunual 

 one, equilateral, larger and petioled. The lateral nerves are thin, arched 

 toward the medial nerve at a distance from the borders, as in Fraxinus 

 prcedicta, Heer, "Fl. Tert. Helv.," pi. civ, figs. 12, 13, to which this species 

 is closely related ; indeed, it merely ditfers by the basilar nerves being at 

 a more acute angle of divergence, and those above with curves more dis- 

 tant from the margins which are merely undulate. No fruiting part has 

 been found. 



i^«5._Florissant. U. S. Geol. Expl. Dr. F. V. Hai/den. 



Fraxinus inespilifolia, sp. nov. 



Plate XXXIII, Figs. 7-12. 



Leaflets more or less unequilateral, ovate-lanceolate, obtusely acuminate, rounded 

 to a short petiole, obtusely serrate ; secondary nerves parallel, subequidistant, 8 or 

 pairs, much curved in passing to the borders and following them, connected with the 

 teeth by short anastomosing veiulets ; uerville.s oblique, very flexuous. 



This species is as clo.sely allied to F. jur/hmdina. Sap., "Et.," iii, p. 89. 



pi. ix. figs. 13-16, as is the preceding to F. })ra'dicta. Heer. The leaflets 



