664 GEOLOGY OF THE YELLOWSTONE NATIONAL PARK. ■ 



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

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

 mentioned doubtful locality. 



Of the 8 species found at Mount Everts, 1 (^I'lira/jDiitcs fulcidct) is 

 described as new, and 2 species {Qiiercus ellisiana and Domheyopsls pJai- 

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

 Laramie. The 2 species reg'arded as doubtful (^3Ii/rica hoJundcri and 

 Mcdapoenna iveedianci) depend on a single fragment each and are obviously 

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

 higher liorizons Of the 3 remaining species. Sequoia reichenhacJii has 

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

 and abundantly in still older strata. Andromeda firaijaiia and Fraxim<s 

 denticidata have been found in both Larnmie and Livingston beds in the 

 Bozeman area. 



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

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

 Everts are of Laramie age. 



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

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

 does not ajipear to have any very close relatives in North America, lint 

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

 ceous of Greenland. Onoclea minima, on the other hand, is ver}- close indeed 

 to a fern from Point of Rocks, W3'oming, that has l)een described under the 

 manuscript name of Woodivardia crenata. 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 c[uite possi- 

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

 identical. Paliurus minimus is perhaps nearest to P. zizyphoidcs from Black 

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

 distributed as follows : Sequoia langsdorfii is represented b}' 1 small branch- 

 let, and the identification is ])robably correct, as it is an easily recognized 

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

 especially abundant in the lower Eort Union beds. Faliurus 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 



