294 GEOLOGICAL SUEVEY OF THE TEEEITORIES. 



very variable in size and form, the difference remarked in the form of our 

 leaves could scarcely authorize a specific separation hut for the short 

 petiole which they bear, a character of rare occurrence in species of this 

 genus. 



JuaLANS EHAMNOiDES, sp. nov. Lcavcs oval, tapering nearly 

 equally upward to a point and downward to a short petiole, entire, 

 varying in size. Two leaves preserved in their whole are 4 inches long 

 and If inches broad. A fragment, with point and base of the leaf 

 broken, is nearly 4 inches broad, with borders apparently rounded 

 toward the base. Yeins thin but distinctly marked ; secondary veins 

 equally distant and parallel ; 10 pairs, oblique 40°, curving from the base 

 in going to the borders, and more still near the borders, which they 

 closely follow in dividing; nervilles distinct, thick, more or less contin- 

 uous and branching. It is difficult to decide if these leaves of ours are 

 referable to Jtiglans or to Bhamnus. Professor Heer, in his Arctic Flora, 

 I, p. 123, PI. xlix, Fig. 10, has a leaf so much like the best preserved 

 one of Dr. Hayden's specimens that it looks like a copy of it; except, 

 however, that in Heer's figure the secondary veins oblique to the me- 

 dial nerve, ascend nearly straight to near the borders, where they ab- 

 ruptly curve and divide. The author says that but for the more 

 straight secondarj^ veins his leaf should be considered a Jiiglans. TJiere- 

 fore tliese curved secondary veins of our species identify it to this genus. 

 But in the leaves which represent it, the secondary veins are closer 

 to each other, more exactly parallel, running also nearer to the borders 

 than in any species of J loglans ; except, perhaps, Juglans acuminata^ Al. 

 Br., wbichj^ in FL, Alas. ; PL ix, Fig. 1, is represented by Heer with leaves 

 of a more regular nervation, and secondary veins going nearer to the 

 borders than in any other figures of this siiecies. This new species is, 

 therefore, closely related to Juglans acuminata^ Al. Br. As it bears 

 still the same relation to Jtiglans rugosa, Lsqx., tmd Cornus acumi- 

 nata, Newby, these three species may be mere varieties of that poly- 

 morphous Juglans acuminata which bas been found over the whole 

 extent of the Tertiary formation of both continents as far as they are 

 known. 



Juglans appressa, Lsqx., (Trans. Am. Phil. Soc, vol. 13, p. 420, 

 PI. XX, Fig. G. Undoubtedly the same species represented by two speci- 

 mens. 



Carya antiquoeum, ISTewby. (Extinct Fl. K A., p. 72, PI. xxiii, 

 Figs. 1 to 4, ined.) Two large leaves referable to this species. There 

 are still in the collection of Dr. Hayden some specimens of leaves of a 

 Carija, Q inches long, 3^ inches broad, broadly ovate-lanceolate, rounded 

 and narrowed downward to a thick,\long petiole, with serrulate borders, 

 &c., which differs from the figures and descrii^tion of the species by 

 a thick medial nerve, by secondary veins much more open near the base, 

 by the borders rounded to the base, and by the broader size of the 

 leaves. The differences may be merely resulting from the jposition of 

 the leaves, as lateral or terminal leaflets of a compound leaf. 



15. EvANSTON, Utah, (above coal.) 



Shaly, whitish sandstone, with few remains of leaves ; outlines and 

 primary nervation only distinguishable, details of structure obscured 

 l3y the coarseness of the stone. 



CiNNAMOMUM ScHEUZERi, Heer. Same form of leaf as the variety 

 figured by the author in Fi. Ter. Helv., PI. xciii, Fig. 2, with details of 

 nervation as marked Fig. 5 of the same plate. 



