FOSSIL FLORA. 705 



destroyed, but probably toothed or lobed; uiidrilj thick, straiglit; seconda- 

 ries nbout 18 pairs, ahernate, at various ang'k^s, cur\ii:g- upward, apparently 

 cainptodrome; finer nervation entirely effaced. 



The figured specimen is 1!) cm. in length, and was probably at least 22 

 cm. in length when entire. It is about 7 cm. broad in the widest part, which 

 is above the middle of the leaf". Unfortunately the margin, with the excep- 

 tion of a small portion near the l)ase, is destroyed, and consequently it is 

 impossil)le to jjroperh- cliaracterize this leaf. There is, however, a little 

 evidence to show tliat the margin was not entire for the whole distance, but 

 this is too vague to be of nmch value. 



1 have referred this leaf provisionally to the genus Quercus, from its 

 resemblance to certain liviny forms, but it will be necessary to .see additional 

 material before tlie correctness of this view can be tested. 



Habitat: Yellowstone River, one-half mile below mouth of Elk Creek, 

 at top of liluff; collected by F. H. Knowlton, August, 1888. 



Quercus flrcinekvis Americana Kn. 



PI. LXXXVIII, fig-. 5. 



Quercus ftircineri-is americuiid Kn.: Bull. U. S. Geol. Surv. Xo. 152, p. 192, 1898. 

 Quercus fur cineyvis Rossm. Lesqueieux: Cret. auil Tert. Fl., p. 21-1, PI. LIV, figs. I, 2. 



The specimen here figured is certainly the same as that figured by 

 Lesquereux (loc. cit., PI. LIV, fig. 1) for this species. 



Habitat: Fossil Forest Ridge, bed No. 5; collected by Ward and 

 Knowdton, August lH, 1887. 



Quercus weedii n. sp. 



PL LXXXVII, fig. 4. 



Leaves mendjranaceous, ovate, rounded at base, acuminate at apex, 

 margin strongly, irregularly tootlied, teeth minutely spiny-pointed; nerva- 

 tion pinnate; midrib straight; secondaries about 8 pairs, alternate, at 

 an angle of about 45°, flexuose, craspedodrome, entering the teetli or 

 forking near the margin and the branches passing into the teeth, or with 

 strong nervilles crossing between 2 secondaries and sending' a branch to 

 the intermediate teeth; nervilles numerous, strong, at various angles, 



MON XXXII, PT II 45 



