PLANTS FROM CURRY COUNTY, OREG. 149 



adapted for determination, and the amount of material is too small. This 

 fern occurs quite commonly in the Buck Mountain Jurassic. 



PL XXXVIII, Fig. 3, shows the specimen natural size, and Fig. 4 



enlarged. 



Cladophlebis vaccensis Ward." 



PI. XXXVIII, Figs. .5, 6. 



The fossil from Curry County, regarded as probably a specimen of 

 Cladophlebis vaccensis, consists of a single detached pinnule. It agrees 

 exactly with some of the pinnules of that fern. Of course a positive 

 identification can not be made with so small an amount of material. 



PL XXXVIII, Fig. 5, shows the specimen natural size, and Fig. 6 



enlarged. 



Ctenis sulcicaulis (Phillips) Ward?* 



Pi. XXXVIII, Figs. 7, 8. 



Two fragments of leaflets are found in the Curry County fossils that 

 seem to belong to Cteyiis sulcicaulis. They are detached and show 

 neither base nor tips, so that the true position of the fragments can not 

 be determined. C. sulcicaulis is an important fossil in the Buck Mountain 

 Jurassic strata. In these small fragments the texture and the slender 

 nerves agree well with those features in the Buck Mountain fossil. The 

 mode of anastomosis of the nerves in both is exactly the same. 



PL XXXVIII, Fig. 7, gives the most complete fragment. The 

 nerves are so fine that they can be made out only with the help of a lens. 

 They are shown enlarged in Fig. 8. 



Ctenophyllum ? sp. Fontaine n. sp.? 



PL XXXVIII, Figs. 9, 10. 



On the rock specimens of the collection there are several strap- 

 shaped fragments of leaves that indicate the presence of a Ctenophyllum of 

 the type of C. densifolium ' of the Oroville flora. If it is a Ctenophyllum it 

 is probably a new species, but the material is too imperfect and too small 

 in amount to permit a full and accurate diagnosis to be given. The 



a For the description of this species see pp. 66^68. — L. F. W. 



6 For the synonymy of this species see p. 113. — L. F. W. 



« Twentieth Ann. Rep. U. S. Geol. Surv., Pt. II, 1900, pp. 358-359, pi. Ixi. 



