294 GEOLOGICAL SURVEY OF THE TERPaTORlES. 



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

 leaves conld scarcely authorize a specific separation but for the short 

 I)etiole which they bear, a character of rare occurrence in species of this 

 genus. 



JuGLANS EHAMNOIDES, sp. nov. Lcaves 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 1| inches broad. A fragment, with point and base of the leaf 

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

 toward the base. Veins thin but distiDCtly marked j secondary veins 

 equally' distant and parallel 5 10 pairs, oblique 40°, curving from the base 

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

 closely follow Id dividing; nervilles distinct, thick, more or less contiu- 

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

 referable to Juglans or to Rhammts. 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. Haydeo'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, wliere they ab- 

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

 straight secondarj^ veins his leaf should be considered a Juglans. Tliej'e- 

 fore these 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 iiglcDis; except, perhaps, Juglans acuminata^ Al. 

 Br., vrbich, in Fl., Alas. ; PI. 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 species. This new species is, 

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

 still tbe same relation to Juglans rugosa^ Lsqx., and Cornus acumi- 

 nata^ Xewby, these three species may be mere varieties of that ])oly- 

 morphous Juglans acuminata which has been found over the whole 

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

 known. 



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

 PI. XX, Fig. 0. Undoubtedly the same species reinesented by two speci- 

 mens. 



Carta antiquorum, jS'ewby. (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 I)r. Hayden some specimens of leaves of a 

 Carya^ G inches long, 3^ inches broad, broadly ovate-lanceolate, rounded 

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

 &c., Avhich diifers from the figures and description of the species by 

 a thick medial nerve, by secondary A^eius 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 merel}^ resulting from the position 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 

 primarj' nervation only distinguishable, details of structure obscured 

 b}' the coarseness of the stone. 



CINNAMOMU3I SciiEUZERi, Hccr. Same form of leaf as the variety 

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

 nervation as marked Fig. 5 of the same plate. 



