kNowLTON.] DESCRIPTION OF SPECIES. 85 



PlIYLLITES sp. 

 PI. XVII. 



The recent material from Cherry Creek contains the single frag- 

 ment figured, which is just sufficient to show that a leaf of immense 

 size was present in these beds. It is a segment, evidently from near 

 the middle of the l)lade, showing a width of at least 22 cm. Apparent]}^ 

 little or none of the margin is retained. 



So little of this leaf is preserved that it is impossible to conjecture 

 as to its affinit}". 



Locality. — Cherry Creek, Crook County, Oregon. Collected by 

 Knowlton and Merriam, July, 1901. 



Phyllites oregonianus n. sp. 



PI. XVI, fig. 1. 



Fln/HUffi n. sp., Knowlton in Mevriam, Univ. Cal., Ball. Dept. GeoL, Vol. II, No. 9, 

 p. 30.3, 1901. 



Leaf of firm texture, lanceolate, narrowly wedge-shaped at base, 

 acuminate at apex; margin perfect!}' entire; midrib very thin; sec- 

 ondaries very thin, about eight pairs, alternate, ari 'ing at an acute 

 angle and much curving upward, camptodrome; nervilles few, obscure; 

 finer nervation not preserved. 



The example figured is about (5.5 cm. long and about 1.5 cm. wide. 

 Another much- broken example was apparently about the same length, 

 but was nearh' 3 cm. broad. It has the same kind of secondaries and 

 has the nervilles ])etter preserved, these being usually broken. 



I am uncertain as to the affinities of this little leaf, although in some 

 respects it suggests Cornus. 



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

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

 Univ. CaL, No. 1334). 



Phyllites bifurcies n. sp. 



PL XVI, fig. 2. 



Leaf coriaceous, ovate or ov^ate-elliptical in shape, abruptly rounded 

 at ])ase (apex destroyed), with a single triangular-lanceolate, acuminate 

 basal lobe; margin otherwise coarsely toothed, the teeth sharp, point- 

 ing upward; petiole short, strong; midril) ver}' strong below, becom- 

 ing very thin above; secondaries numerous, thin, somewhat irregular, 

 ending in the lobe and marginal teeth; finer nervation not retained. 



The curious leaf figured is apparently all that is represented of this 

 form. It was apparently between T and 8 cm. in length, exclusive of 

 the petiole, nearl}' 1 cm. long, and is -4.5 cm. broad between the tip of 



