232 UNITED STATES GEOLOGICAL SURVEY— TERTIARY FLORA. 



Diospyros bracbysepala, Al. Br. 



Plate XL, Figs. 7-10 ; Plate LXIII, Fig. 6. 



Diospiir03 hrachrjsepala, Al. Br., Bronn &Leon., Jahrb. f. Mineral., 1845, p. 170. — Ung., Blattabdr. v. Svros- 

 zowice, pi. xiv, tig. 15. — Heer, Fl. Tert. Helv. iii, p. 11, pi. cii, figs. 1-14; cliii, fig. 39 6; Fl. 

 Foss. Arct., p. 117, pi. xv, figs. 10-12; xvii, figs. 5, A, i ; xlvii, figs. 5-7; Mioc. Bait. Fl., p. H4, 

 pi. xxvii, figs. 1-6 ; xxviii, fig. 1 ; Fl. v. Bornst., pi. iii, figs. 7-8. — Sism., Mater., p. 55, pi. xvi, 

 fig. 5; xix, fig. 3.— Ett., Foss. Fl. v. Bil., ii, p. 232, pi. xxxviii, fig. 28; xxxix, fig. X. — Lesqx., 

 Annual Report, 1872, p. 394 ; 1873, p. 401. 



Diospyros latifulia, Al. Br., in Bruckm. Verz., p. 232. 



Diospyros longifoUa, Al. Br., in Stizenb. Verz., p. 83. 



Tetrapleris Harpijarum, Uug., Foss Fl. v. Sotzka, pi. xxix, figs. 9, 10 (folia). 



Getonia macroptera et petrew/olia, Ung., Hid., pi. xxxiii, figs. 2,3,4,8 (folia). 



Getonia truncata, Gopp., Foss. Fl. v. Schossnitz, p. 37, pi. xxv, fig. 11. 



Leaves petioled, elliptical, narrowed to a point or a short acumen, rannded and attenuated to the 



base, very entire; secondary nerves alternate, inequidistant, on an acute angle of divergence, more 



open toward the point. 



The leaves of this species, though somewhat thick and membranaceous, 

 are not as thick nor as coarsely veined as those of the former. They are 

 as variable in form as those of the living D. Virginiana, either rounded or 

 narrowed to the base, and far different in size. All the fragments which 

 I consider as referable to the species represent it in some of ils characters, 

 even the point of fig. 8 in pi. xl, though it indicates a leaf smaller than any 

 described from Europe; for the form agrees with figs. 4 and 5, pi. x.wii, of 

 the Baltic Flora. As seen in our figs. 7 and 9, the base is attenuated or 

 rounded, as represented by the leaves referred to this species by European 

 authors. 



Habitat. — Golden, Colorado, and Black Buttes and Point of Rocks, 



Wyoming. 



Diospyros Copeana, Lesqz. 



Plate XL, Fig. 11. 



Diospyros Copeana, Lesqx., .Annual Report, 1873, p. 414. 



Leaf very entire, obovate, gradually narrowed downward to a short petiole, rounded upward to 

 an obtuse point ; midrib thick, scarcely thinning upward ; secondary veins thin, camptodrome. 



The leaf is of small size, seven centimeters long and half as wide, not 

 thick; the lateral veins, distinct though thin, at an open angle of divergence, 

 are more or less curved in passing to the borders, where they form, by anas- 

 tomose of the nervilles, a double series of bows; the intermediate tertiary 

 veins are distinct; the areolation obsolete. By its gradually narrowed base, 

 this leaf is different in form from the fossil species of this genus. In pi. iii, 

 fig. 8, of the Bornstadt Flora, Heer represents, however, as D. hrachysepala, 

 one leaf whose base is narrowed as it is in this one. The characters of the 

 nervalion refer this new species to DioKpyro-t. 



Habitat — Elko, Nevada {Prof. E. D. Cope). 



