367 



too incomplete. It is, however, easily recognized by its peculiar 

 nervation, forming small, elevated, polygonal areolae, an areolation like 

 an embossed checker-board, resembling that of Asarum Europeum. The 

 fragments of Golden seem to be part of much larger leaves than those 

 of Ettinghausen, who described the species in Bilin Flora (p. 80, PI. 

 XXV, figs. 2-3). These ^:)er contra, from specimens of Point of Eocks, 

 are perfectly well and entirely preserved leaves, rather smaller, except 

 one, than the leaves of Bilin. They are also slightly more expanded 

 on the sides, or reniform, and the crennlations less distinct; bat these 

 border-divisions are, for their size, related to the areolation, which is 

 wider in proportion of the size of the leaves. Onr leaves, also, are 

 evidently peltate, at least in two of the figured specimens. One only 

 has the position of the thick petiole marked similarly to that of the 

 European leaves ; but even the representation of the species by the au- 

 thor seems to indicate peltate leaves, whose borders are erased at the 

 base or at the point of attachment of the petiole. The differences are 

 too nuimj)ortant to be considered as specific characters. These leaves 

 merely represent a local variety, or a var. minor. This species appears 

 to be rare in the Tertiary, of Europe, as it has till now been seen only 

 in the plastic clay-beds of Bilin. 



Habitat.— Point of Eocks, Br. F. V. Hayden. 



9. Ficus Dalmatica, Ett. 



Leaves narrowly ovate, obtusely pointed, narrowed to a short petiole; 

 middle nerve thick toward the base, thinning upward ; basilar lateral 

 nerves from above the border-base of the leaves, thin, ascending at an 

 acute angle of divergence of thirty degrees, to the middle of the leaf; 

 secondary veins more open, equidistant ; nervation camptodrome, joined 

 by transverse nervilles. 



In considering the figure of the author in Flora Promina (PL VII, 

 fig. 11), there is no difference whatever between the European form and 

 ours; but the description says that the secondary veins are branching 

 at the point, and there is no trace of divisions of veins observable upon 

 our specimens. As, however, the figured single leaf shows merely 

 transverse nervilles a.ud not real branches, and as these nervilles are 

 also visible on the American form, it is evidently identical. One of 

 the leaves represented in our plate seems rounded. This is caused 

 by its reversement into the stone ; the upper part of the leaf being 

 flat and the lower curved down in entering the stone, where the extreme 

 base and petiole are imbedded. 



Habitat. — Point of Eocks, JDr. F. V. Hayden. 



10. DiosPYROS BEACHYSEPALA, Al. Braun. 



This species has been described already in Dr. Hayden's Eeport for 

 1872 (p. 394) from specimens of Black Butte, and in Eeport for 1873 (p. 

 401) from specimens of Sand Creek, Colorado, a locality identified with 

 Golden by its flora. But none of the leaves found as yet is as well pre- 

 served and as well characterized as that of Point of Eocks, which is es- 

 pecially comi^arable -to the leaves in Heer's Fl. Tert. Helv. (PI. CII, 

 fig. 2). The species is not rare in the Miocene of Europe, especially 

 in the lower groups, and appears equally widely distributed in our 

 Lower Tertiar5\ 

 ' Habitat. — Point of Eocks, Br. F. V. Hayden. 



11. Ficus tili^folia, Heer. 



Like the former, it has been described previously in Dr. F. V. Hay- 

 den's Eeport for 1871 : p. 287, from specimens of Washakie station 

 mentioned in supplement to this report, p. 12, from Evanston ; p. 6, 



