664 GEOLOGY OF THE YELLOWSTONE NATIONAL PARK. 



This flora embraces only 18 species, of which number 8 are confined 

 to the Mount Everts locality, 7 to Wolverine Creek, and 3 to the above- 

 mentioned doubtful locality. 



Of the 8 species found at Mount Everts, 1 (Ph rag mites falcata) is 

 described as new, and 2 species (Quercus ellisiana and Dombeyopsis plat- 

 anoides) have never before been found outside of the so-called Bozeman 

 Laramie. The 2 species regarded as doubtful (Myrica bolanderi and 

 Malapoenna weediana) depend on a single fragment each and are obviously 

 of no value in determining the age. They are found normally in much 

 higher horizons Of the 3 remaining species, Sequoia reichenbachi has 

 been found in the Livingston beds, but is also found in the true Laramie, 

 and abundantly in still older strata. Andromeda grayana and Fraxinm 

 dentictdata have been found in both Laramie and Livingston beds in the 

 Bozeman area. 



The evidence of the fossil plants confirms that derived from the study 

 of the stratigraphy, namely, that the beds near the summit of Mount 

 Everts are of Laramie age. 



Of the 7 species from Wolverine Creek, 3 — Asplenium haguei, Onoclea 

 minima, and Paliurus minimus — are described as new. The first of these 

 does not appear to have any very close relatives in North America, but 

 apparently finds its nearest analogue in certain species from the Creta- 

 ceous of Greenland. Onoclea minima, on the other hand, is very close indeed 

 to a fern from Point of Rocks, Wyoming, that has been described under the 

 manuscript name of Woodivardia erenata. The Wyoming plant depends on 

 two or three small fragments, which, as pointed out under the diagnosis of 

 Onoclea, are hardly sufficient to properly characterize it. It is quite possi- 

 ble that when new material shall be obtained these two plants will be found 

 identical. Paliitrtis minimus is perhaps nearest to P. sizyphoides from Black 

 Buttes, Wyoming, and Erie, Colorado. The 4 remaining species are 

 distributed as follows : Sequoia langsdorfii is represented by 1 small branch- 

 let, and the identification is probably correct, as it is an easily recognized 

 species. It has a wide geological and geographical distribution, being 

 especially abundant in the lower Fort Union beds. Paliurus minimus is 

 doubtfully identified in this material. As stated above, it is a true Lara- 

 mie species. Viburnum rotundifolium is also a Laramie species. It has 

 never before been found outside of the type locality, which is Point of 



