84 UNITED STATES GEOLOGICAL SUKVEY— TERTIARY FLORA. 



longer and more slender branch, with scars of the same form, is, however, 

 referred to Pinuspalceostrohus by Saporta (fit., 2, pi. iii, fig. 1 d). The species is 

 described by d'Ettingshausen {loc. cit.) for leaves of the same form as ours, 

 apparently flexible or soft, many being broken or curved, Saporta gives, besides 

 the leaves and branches, a cone referable to it. As we have leaves only, the 

 identification of our specimens to the European species is not positive. I have 

 been unable also to see these leaves either square or triquetrous, as shown by a 

 cross-section in Flor. Tert. Helvet., pi. xxi, fig. 6 e, and Flor. Bait., pi. xiii, fig. 1 b. 

 They seem merely flat or canaliculate, and therefore keeled on the back. The 

 specimens bearing fragments of this Pine have numerous seeds of Conifers, one 

 of which, represented in fig. 3-3, does not bear any likeness to that referred to 

 this species by d'Ettingshausen in Har. FL, pi. vi, fig. 22, but rather resembles 

 those of Pinus polaris, Heer (Spitzb. Fl., pi. v, figs. 9 and 10). The same 

 shales have also large scales of cones in fragments, like that in fig. 32, with 

 broad rhomboidal apophyses, rough and wrinkled lengthwise on the borders, 

 and a large, deep, central cavity of the same form. Though these fragments 

 may be compared to some species of Pines, they are undeterminable, and 

 have been figured here as points of comparison for future researches. 



Habitat. — Near Castello's Ranch {Dv. F. V. Hayden); near Florissant 

 {Prof. E. D. Cope). 



TAXINE^. 



SALISBURIA. 

 Salisburia polymorph a, Lesqz. 



Plato LX, Figs. 40, 41. 



Saliahuria polymorpha, Lesqx., Am. Journ. Sci. and Arts, 2d ser., No. 81, May, 1859, p. 362 ; Annual 

 Report, 1872, p. 404. 



Leaves coneiform, gradually enlarging from the base upward, irregularly more or less deeply cut in 

 obtuse lobes; middle nerve distinct to half the length; veins very thin and close, slightly curving in 

 asceHding, many times dichotomous. 



The leaves of this species, first described from Vancouver's specimens, 

 are extremely variable. Cuneiform to the base, or enlarging upward, their 

 borders are variously divided in more or less deep, generally obtuse lobes, 

 sometimes split to the middle, sometimes merely wavy around the top, and 

 marked downward by folds along the veinlets, which thus inflated are like 

 multiple primary nerves, as seen in fig. 40, which is, however, made from an 

 obscure specimen. In one of the Vancouver's .specimens, the leaf of about 



