84 

 Cinnamomum HEERii, Lesqx., PI. xxviii, Fig. 11. 



Leaf tbickisb, snbcoriaceous, eutire, ovate, taper-pointed, rounded downward, three-nerved from tbo 

 base; lateral veins ascending to above the middle, branching outside. 



Cinnamomum heerii, Lesqx., Transactions of the American Philosophical Soci- 

 ety, vol. xiii, p. 431, PI. xxiii, Fig. 12. 



Our figure is a copy of this last, for, to my regret, and though I carefully 

 searched for specimens representing a leaf like this, I found nothing in the 

 Dakota group comparable to it. I have, therefore, nothing to add to my 

 former remarks. It is not possible to kuow, on account of the deformation of 

 the specimen by grinding it round from the middle to the base, if the bor- 

 ders are rounded or narrowed, and if, as in the Cimiamomum leaves, they 

 descend lower than the base of the primary nerves. If it is the case, the 

 species would be related very closely indeed to C. mississipiense, Lesqx., of 

 the same paper, (p. 418, PI. xix, Fig. 2,) a species abundantly found in the 

 Eocene of the Rocky Mountains and of the Mississippi. The same uncer- 

 tainty concerning its relation exists for the leaf of Vancouver, from which the 

 present species was named, (American Journal of Science and Arts, vol. xxvii, 

 p. 361.) The identity of both leaves is, therefore, uncertain. 



Habitat. — Fort Harker, Dr. Leconte. 



l » 



Oreodaphne cretacea, sp. nov., PL xxx, Fig. 5. 



Leaf elliptical, gradually curving to an obtuse point, narrowed in about the same degree to its base, 

 eutire; medial nerve tbick, secondary veins opposite. 



This leaf preserved entire, except the petiole, is a little more than 4 .J 

 centimeters long, l 1 centimeters broad, narrowly ovate-pointed, with four 

 pairs of opposite lateral veins on an acute angle of divergence 30° to 40°, 

 branching in the upper part, camptodrome, united together by thick nervilles. 

 The lower pair joins the middle nerve a little above the base of the leaf, and 

 follows up nearly parallel to the borders, anastomosing by its ramifications 

 with those of the veins above. The substance is thickish or subcoriaceous ; 

 the surface rough by the coarse nervation. 



This form is comparable to Oreodaphne heerii, Gaud., (Contributions, &c., 

 1st Mem., p. 35, PI. x, Figs. 4-9, and PL xi, Figs. 1-7.) The leaf is much 

 smaller, but except this there is not great difference of form and nervation. 

 Even the small inflation, like bulbs, seen in the axils of the veins of the Mio- 

 cene species, are also apparent, though not very distinct, in the Cretaceous leaf. 



Habitat. — Western Kansas, concretions, Mudge. 



