36 FOSSIL FLORA OF THE JOHN DAY BASIN, OREGON. [bui.i.. :j04. 



flUGLANS CRASSIFOLIA II. sp. 



PI. IV, %. .3. 



Juglans n. sp., Knowlton in Merriaiii, TJniv. Cal., Bull. Dept. Geol., Vol. II, No. 9, 

 p. 303, 1901. 



Leaflets thick in texture, lanceolate-acuminate in shape, rather 

 abruptly narrowed at base; niaro-in perfectly entire; niidril) thick, 

 rather strong; secondaries 9 to 12 pairs, strong, mainly alternate, at 

 an angle of about 45°, much curving upward, camptodrome, passing 

 near the margin and often joining the one next above; finer nervation 

 nearly or quite obsolete. 



This species is represented by a large number of leaflets, all more 

 or less broken, jDreserved in a tangled mass on two or three pieces of 

 matrix. The length is from 9 to 11 cm. and the width about 2.5 cm., 

 with occasionally one somewhat smaller. 



The affinity of this species is undoubtedly with certain of the forms 

 of J. Selirmper'h Lesq.," of the Green River group, being of the same 

 size and shape as the figures quoted above, but different in having a 

 less number of secondaries and a distinct finer nervation. These 

 species are closel}^ related and a larger series might show them to be 

 identical. 



Loadlti/. — Three and one-half miles south of Lone Rock, Gilliam 

 County, Oregon. Collected by Merriam's expedition of 1900 (Mus. 

 Univ. Cal., Nos. 1326-1331). 



Juglans oregoniana Lesq. 



Juglans oregoniana Lesq., Foss. PL Aurif. Gravel, p. 35, PI. IX, fig. 10, 1878. 

 Rhus Bendlrel Lesq., Proc. U. S. Nat. Mus., Vol. XI, p. 15, 1888. (The small leaflet 



described.) 

 Juglans hesperia Knowlton, Eighteenth Ann. Kept. U. S. (ieol. Survey, Pt. Ill, p. 723, 



PI. XCIX, fig. 8, 1898. 



This species was described by Lesquereux in his Flora of the Aurif- 

 erous Gravels. As to the localit}" whence the type specimen came he 

 says: "On soft laminated clay with AraliaWhit?ieyi, evidently of the 

 same age as the Chalk Bluffs of California, without definite localitj'^ 

 but Oregon." From these remarks it has been assumed that the speci- 

 men actually was from the Auriferous gravels, and that the label on it 

 was wrong. Fortunately this type is preserved in the paleontological 

 collection of the University of California (No. 179S), where I recently 

 had opportunity of seeing it. It was at once seen that it was on the 

 characteristic matrix of the Van Horn's ranch locality, and indeed the 

 obscure labeling on the back of the specimen so indicates. 



Jn both the older and more recent collections from Van Horn's 

 ranch and vicinity I find a number of specimens, which I refer with 



aTert. Fl., p. 287, PI. LVI, fig. 6, 1878. 



