76 UNITED STATES GEOLOGICAL SURVEY— TERTIARY FLORA. 



rugose than represented in those of the European species; fig. 3a is an 

 enlarged fragment of a branch, with male catkins and leaves. 



Habitat. — Castello's Ranch {Dr. F. V. Hayden), specimens figured in 

 pi. Ixv ; Elko Station {Prof. E. D. Cope), as represented in pi. vi, figs. 3-5. 

 These last fragments were doubtfully referred to Sequoia Langsdorffii, Brgt., 

 in Report, 1874, p. 410. 



The two cones (figs. 5 and 5«), which, flattened by compression, merely 

 show displaced apophyses somewhat similar to those of this species, are not 

 positively determined. The scales are distant, seemingly scattered, more 

 enlarged on both sides, bearing a central raamilla, from which numerous wrin- 

 kles, or strise, are diverging around to the borders. They resemble the scales 

 of Geiniizia fortnosa, Heer, of the Cretaceous flora of Quedlinburg ; a distant 

 likeness, however. The relation of these cones is still uncertain. They come 

 from the same group, the upper division of No. 4. 



Sequoia Langsdorffii, Brgt. 



Leaves close together, rigid, coriaceous, linear, obtusely pointed, flat, open, distichous, narrowed 

 and decurrent at base ; middle nerve strong ; cones broadly oval or subglobose ; scales numerous, peltate, 

 mucronate in the middle. 



Though I have seen, upon specimens from different localities, especially 

 from Black Butle, a number of detached leaves, apparently referable to this 

 species, I have been unable as yet to find a fragment distinct enough for 

 positive identification. It has been described by Dr. Newberry from numer- 

 ous specimens obtained by Dr. Hayden from the Yellowstone Lignitic. 

 Heer has it also described from very fine specimens, from the roof of the 

 coal mines of Nanaimo, Vancouver's Island, as well as from Greenland and 

 from Alaska. It is represented in Prof J. D. Whitney's collection of Mio- 

 cene plants of Oregon by specimens from John Day Valley, bearing branches 

 and cones, in connection \v\th Betula macrophylla, Gopp., Quercus pseudo-alnus, 

 Ett., Q. furcinervis, Heer, Platanus nobilis, Newby., Cinnamo7num lanceolatum, 

 Ung., Acer, etc.; therefore its presence in the Colorado and Wyoming 

 Lignitic may be admitted as more than probable. Even, as it has been 

 suggested by critical remarks, the two forms described here below, under 

 different specific names, may be mere varieties of it. In Europe, Sequoia 

 Langsdorffii is one of the more generally distributed plants of the Miocene, 

 and has been described, from numerous localities and under different names, 

 by most of the paleo-phytologists : first Taxites Langsdorffii, Brgt., 0. Webb.; 

 it is T. phlegetonteiis, T. Rosthorni, and Cupressites ta.xiformis, Ung., Cujrres- 



