CONTRIBUTION TO THE MIOCENE FLORA OF ALASKA." 



CEYPTOGAME^. 



EQUISETACEiE. 

 Equisetuni globulosum, Bp. nov. 



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



FILICES. 

 Osmunda Torellii, Heer. 



"fflioc. Fl. V. Sachalin," p. 19, pi. i, figs. 4, 46. 

 Pecoptei-is Torellii, Heer, " Fl. Arct.," i, p. 88, pi. i, fig. 15. 

 HemHelites Torellii, Heer, ibid., ii, p. 462, pi. xl, figs. l~5a; \v, 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. 



Hub. — Coal Arbor, Unga Island. 



CONIFEEJE. 

 Tliuites (Cbanisecyparis) Alaskensis, sp. nov. 



Brauchlets alternate, flatteued, oblique ; leaves imbricate ou four ranks, the facial 

 squatniform, compressed, broadly rhotnboidal-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 lace 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 Thuites 

 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 

 ihe 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 llie Miocene flora of North America. 



C F 17 207 



