496 Berry — Wngelhardtiafrom the American. Eocene. 



fossils to be decisive. The involucre is also markedly differ- 

 ent in the two genera. Carpinus involucres are usually 

 smaller with the median wing much wider and longer than the 

 lateral wings and with somewhat different venation. 



The margins are also toothed while in Engelhardtia they are 

 always entire. I have examined fruits of all of the existing 

 species of Carpinus and experience no difficulty in readily dis- 

 tinguishing them from those of Engelhardtia, the American 

 species of the former being especially different in appearance 

 from those of Engelhardtia. I have seen involucres of the old 

 world Carpinus hetulns from trees cultivated in this country 

 in which the wings had entire or nearly entire margins, 

 but the aspect of the specimens as a whole, because of 

 their different proportions and venation, was markedly unlike 

 Engelhardtia, and if they had been found as fossils no com- 

 petent paleobotanist would have been at a loss regarding their 

 botanical affinity for a single instant. 



Engelhardtia mississippiensis was collected from a locality 

 about one mile southeast of Early Grove in northeastern 

 Marshall County, Mississippi, a few miles from the Tennessee 

 border. The age of the beds is Wilcox Eocene, as indicated 

 by the large flora associated with the present species. 



Johns Hopkins University, Baltimore. 



