74 UNITED STATES GEOLOGICAL SURVEY— TERTIARY FLORA. 



sometimes being very small and narrow, as in fig. 12, sometimes compara- 

 tively broad, as in fig. 13, with a distinct middle nerve. Fig. 14 represents a 

 branch with narrow leaves, and could be perhaps referred to T. angusti- 

 foUum, Heer (Arct. FL, p. 156, pi. xxx, fig. 1). But the lower part of fig. 

 13 is evidently of the same character, and therefore seems to be a form of 

 this variable species. The American specimens, like those described and 

 figured in the Arctic Flora, have generally linear, slightly obtuse leaves, 

 while those of the Baltic Flora have them slightly lanceolate. Fig. 14 a is 

 an enlarged representation of fig. 14. The leaves vary in length from four to 

 eleven millimeters, and in width from one-half to more than one and one- 

 half millimeters. 



Habitat. — Elko Station, Utah {Prof. E. D. Cope), in numerous very 

 fragmentary specimens. I found it also abundantly at Carbon, and it was 

 collected in profusion at Fort Fetterman by Lieut. Vogdes. We have one 



specimen from Evanston. 



GLYPTOSTROBUS, Endl. 



Olyptostrobus Europteus, Heer. 

 Plate VII, Figs. 1, 2. 



Glyptostrobus Europceus, Heer, FI. Tert. Helv., i, p. 51, pi. ix, xx, fij;. 1 ; Fl. Foss. Arct., p. 90, pi. iii, fige. 



2-5, pi. xlv, figs. 20-22; Mioc. Bait. Fl., p. 20, pi. iii, figs. 8, 9, etc.— Lesqx., Annual Eeport, 



1873, p. 409. 

 Glyptostrobus Ungeri, Heer, Fl. Tert. Helv., i, p 52, pi. xviii.— Ludw., Palseont., viii, p. 71, pi. xii, fig. 6. 

 Glypiostrobites (Enhigmsis, Al. Br. Stizen. Verz., p. 73. 



Branches irregularly pinnately divided ; branchlets variable in length, obtuse ; leaves squamiform, 

 imbricated, decorreut at base; male catkins ovate, single, sessile upon lateral branches; fertile catkins 

 ovate, comparatively large; scales imbricated, semicircular, obtusely dentate on the borders, costate in 

 the length ; seeds ovate, with alate borders. 



The fertile catkins of this species have not been found as yet in the 

 American specimens communicated to me, but only fragments of branches 

 and branchlets, like those figured here, some of them bearing male catkins, 

 The description of the fertile cone is made from European authors. The 

 shale bearing our specimens is, however, covered with remains of this species, 

 branchlets especially, together with, deep, oval impressions, which seem to 

 represent crushed cones, whose scales are deformed and undeterminable. 



Habitat. — On thin soft shale, near Castello's Eanch {Dr. F. V. Hayden); 

 near Florissant {Prof. E. D. Cope). 



