364 GEOLOGICAL SURVEY OF THE TERRITORIES. 



Phyllites rhomboidetjs, Lesqx., Cret. Flora, p. 112, PL VI, fig. 8. 



Leaf rhomboidal, broadly cuneate to the base, more obtusely narrowed and 

 undulate from the middle to an obtuse short point ; nervation Jive-palmate 

 from the base, the tivo inner lateral veins curving up at a very acute angle 

 of divergence and aerodrome or nearly reaching the point of the leaf, branching 

 outside, the external veins following the borders up to the middle of the leaf, 

 ichere they anastomose with branches of the first pair. 



Phyllites cotinus, Lesqx. 



Bumelia marcouana, Heer (Lesqx.), Cret. Flora, p. 90, PL XXVIII, fig. 2. 

 Leaf membranaceous, broadly oval, entire, emarginate, rounded dowmcard 

 to a long slender petiole, penninerve. 



From information received of Professor Heer, this leaf positively 

 differs from the one which he examined and which is figured in 

 Dana's Manual of Geology. Though the likeness of this leaf to those 

 of Rhus cotinus is marked, its relation is not definite. 



Phyllites Vanonye, Heer,— Cret. Flora, p. 113, PI. XX, fig. 7: PI. 



XXVIII, fig. 8. 

 Leaves small, ovate-lanceolate, pointed, cuneiform to the base ; borders en- 

 tire, middle nerve thin, secondary veins few, scattered, camptodrome. 



Phyllites umbonatus, Lesqx., Cret. Flora, p. 113, PI. XIX, fig. 4. 

 Leaf quadrate in outline, truncate at the base, deeply notched at the top by 

 the splitting of the thick middle nerve, irregularly broadly undulate on the 

 borders ; secondary veins few, at irregular distances, nearly at right angle to 

 the middle nerve, camptodrome. 



Phyllites amorphus, Lesqx., Cret. Flora, p. 113, PI. XXII, figs. 3, 4. 

 Two fragments of coriaceous, obovate, entire leaves, narrowed to the base 

 (broleen) ; middle nerve deep and narrow ; secondary veins either in right 

 angle to the middle nerve or curved downward, or passing tip in an acute angle 

 of divergence, branching and anastomosing in various abnormal icays. 



Ptenostrobus nebrascensis, Lesqx., Cret. Flora, p. 114, PI. XXIV, 



fig. 1. 

 Cone oblong, cut in its length ; seeds oblong-oval, lenticular, obtuse at one 

 end, pointed at the other, winged, icings oval oblong, striated. 



Caulinites spinosa, Lesqx., Cret. Flora, p. 115. 



Stems or branches cylindrical, with rough surface marked by irregular, 

 close dots, or small cavities resembling the impressions of scale; bearing long 

 spines at right angles. • 



Carpolithes 1 , Cret. Flora, p. 114, PI. XXVI, fig. 5, PI. XXX, fig. 11. 



Fruit f large, oval-pointed at both ends, costate, marked at the lower end 

 by a small hollow surrounded by small semi-globular bolsters corresponding 

 with the end of the costce. 



The bodies represented by the figures are doubtfully referred to some 

 vegetable organism. 



It would, perhaps, seem advisable to close this review by a table of 

 comparison, exposing the relation of the species of the Dakota group 

 with those of the Cretaceous floras of other countries. A table of this 

 kind, however, would not offer any valuable information, and could be 

 of little interest, on account of the scantiness of the materials available 

 for comparison. The few points of affinity between our American Cre- 



