58 THE FLOKA OF THE DAKOTA GROUP. 



represented by Fig. 19, in Debey, Feuilles qiiercifonnes, from A\hicli it 

 merely diffens iiv its slight!}^ greater breadth and le.ss distant secondaries. 

 It has also a mai-ked degree of relation, especially in tlu^ form of the leaf 

 and the nervation, to Quercus nevadensis Lesq.^ or to Dryojilij/llum aquamarum 

 Ward.^ 



Habitat: Ellsworth Connty, Kansas. No. 219 of the collection of Mr. 

 R. D. Lacoe. 



QUEBCUS (Dryophtllum) hieracifolia (Deb.) Hos. <& v. d. Marck. 

 PL III, Fig. 15. 



Hos. & V. d. Marck, Fl. d. Westf. Cret. Form., p. 166, PI. XXXI, Figs. 85-88 ; Heer Fl. 

 Foss. Arot, vol. 6, 2 Abth., p. 68, PI. xxv, Figs. 2b, c, 4. 



Leaves coriaceous, lanceolate, narrowed to the rounded base, sparingly 

 sinuate-dentate, primary nerve thick; secondaries at an acute angle of 

 divergence. 



This leaf, though fragmentary, well represents the species as figured 

 by Heer (loc. cit.), being especially like his Fig. 2c. The teeth are shorter, 

 more obtuse, and more oblique than in the figures given by Hosius, but the 

 nervation is identical ; the simple secondai'ies curve in traversing the blade 

 at an angle of divergence of 45° to .50°, reaching the teeth by their extrem- 

 ities. The areolation is obsolete. 



Hal)itat: Ellsworth County, Kansas. No. 726 of the museum of the 

 University of Kansas. Collected by E. P. West. 



Quercus (Dryophyllum) latifolia Lesq. 

 Cret. and Tert. Fl., p. 37, PI. iv. Figs. 1, 2. 



Quercus (Dryophyllum) Holmesii Lesq, 

 Cret. aud Tert. Fl., p. 38, PI. iv, Fig. 8. 



Galla quercina, sp. nov. 

 PI. VII, Fig. 2. 



Globular; surface smooth, polished; point of attachment transversely 

 aval, small, wrinkled around, at right angles to the ])<»int. 



'I'hese organisms appear to represent oak galls, being in tlieir characters 

 and appearance different from the round, ferruginous concretions found in 

 some localities of the Dakota Group, which are always rough on the sur- 



'FoHS. Plants of tlio Auriferous Gravel, p. .'i, PI. ii, Figs. 3 aud 4. 

 "Types of the Laramie Flor.a, p. •H\, PI. x, Figs. 2 and 3. 



