THE FLORA OF THE SAIZSTT EUGENE SILTS 



403 



Gaiidin and Strozzi^^ and referred to Fagus dentata Goeppert;-* 

 but a comparison between the two figures shows the latter to be 

 much more sharply dentate. The Italian specimen appears to 

 represent a Quercus rather than a Fagus, and to represent the 

 same general type of leaf as ours. Recently, also, a leaf that 

 appears to be closely comparable with the latter species, from 

 the Tertiary of Silesia, was described and figured by Krausel," 

 and referred to Castanea atavla Unger,^® Specific identity with 

 linger 's species does not appear to be very striking, but the re- 

 semblance of Krausel's specimen to ours appears to be very 

 close. Foliar distinctions, in many instances, between fossil 

 specimens representing the genera Quercus, Fagus, and Casta- 

 nea are, however, not very obvious and, in connection Avith im- 

 perfect specimens it is, in certain instances, difficult to differen- 

 tiate between them with certainty. 



Quercus Schofieldii n. sp. 



Plate 33 



Leaf apparently obovate in shape, approximately 17 centi- 

 meters in length by 8.5 centimeters in maximum width ; margin 

 finely and remotely dentate above, undulate below; nervation 

 sim])ly pinnate; midrib slender; secondaries alternate, subpar- 

 allel, slightly flexuous, subtending uniform angles of approxi- 

 mately 45° with the midrib, each of the upper ones terminating 

 in one of the marginal dentitions, just below which, from the 

 upper side of each secondary, a branch extends upAvard in a 

 series of irregular angled loops to the distal end of the secon- 

 dary next above; tertiary nervation fine, close, uniform, ap- 

 proximately at right angles to the supporting secondaries 

 throughout, mostly flexed, bent, or forked and connected, form- 

 ing a network of irregular quadrilateral areola. 



This specimen represents an oak that is manifestly of a dif- 

 ferent type from any of the species that are in existence in the 



23 Gaudin, C. T., & Strozzi, Carlo. Cont. flor. foss. Ital., Mem. 1 (Memoire sur 

 quelques gisements de feuilles fossiles de la Toscane), p. 32, pi. 6, fig. 5. 1858. 



2-* Goeppert, H. R. Beitrage zur Tertiarflora Schlesiens, p. 18, pi. 2, fig. 3. 1852. 



25 Krausel, Eichard. Die Pflanzen des Schlesischen Tertiars. Preuss. Geol. 

 Landesanst., Jahrb. f. 1917 (vol. 38, pt. 2, no. 1/2), p. 130, pi. 12, fig. 14. 1919. 



26 Unger, Franz. Die fossile Flora von Sotzka. K. Akad. Wiss. [Wien], math.- 

 naturwiss. CI., Denksehr. vol. 2, p. 164 (34), pi. 31 (10), figs. 5-7. 1850. 



