CONTRIBUTION TO THE MIOCENE FLORA OF ALASKA. 1 



CKYPTOGAME./E. 



EaUISETACE.ZE. 

 Equisetum globulosum, sp. nov. 



The species is described above, p. 222, from the Bad Lands. 



FILICES. 



O s m u 11 <l a T o r e 1 1 i i , Heer. 



" Mioc. Fl. v. Sacbalin," p. 19, pi. i, figs. 4, 46. 



Pecopteris Torellii, Heer, " Fl. Arct.," i, p. 88, pi. i, fig. 15. 



Bemitelites Torellii, Heer, ibid., ii, p. 462, pi. xl, figs. l-5a; lv, fig. 2. 



The species is represented by a very large number of specimens, 

 mostly separate leaflets, imbedded in boulders of carbonate of iron. Most 

 of the leaflets are simple, not lobate, oblong or ovate-lanceolate, entire 

 or merely crenulate on the borders by the impressions of the veins. These 

 leaflets are rarely preserved entire ; the borders are often lacerated ; they 

 vary from 3i to 6 centimeters long and 1 to 2J centimeters broad. They 

 evidently represent leaflets of an Osmunda. 



Hab. — Coal Arbor, Unga Island. 



C0NIFER2E. 

 Tliuites (Cliamsecyparis) Alaskensis, sp. nov. 



Branculets alternate, flattened, oblique ; leaves imbricate on four ranks, the facial 

 squainiforra, compressed, broadly rhomboidal-quadrate, slightly narrowed to the base, 

 inflated on the borders and in the middle toward the apex, the lateral flattened by com- 

 pression, exposing half their face and thus triangular, exactly filling the space between 

 the base and the top of the facial leaves, all thick. 



I find no distinct relationship of this species except with Tkuites 

 Meriani, Heer, "Fl. Arct.," iii, p. 73. pi. xvi, figs. 17, 18, a cretaceous species, 

 differing by the facial leaves ovate, narrower toward the apex. 



Hab. — Same as the preceding. 



■The following species of fossil plants from Alaska have been already described in the "Proceedings of 

 the United States National Museum," vol. v, 1882, pp. 443-449. They are reproduced here in order to include 

 in this volume all the extant literature on the Miocene flora of North America. 



CF 1? 257 



