202 BERRY— LOWER EOCENE FLORA OF [April 25, 



rope to which continent their discovery has thus far been confined. 

 There are over 30 Miocene species found throughout southern Eu- 

 rope, in eastern Asia, and in North America (Colorado, Oregon and 

 Yellowstone Park). The eight or ten Pliocene species are confined 

 to southern Europe. 



In addition to the genus Sapindiis there are several form-genera 

 derived from the same root. Thus Sapindophylliim has been ap- 

 plied to two species from the Albian of Portugal (?). To it are 

 also referred a Cenomanian and a Chattian species from Bohemia 

 and a Tertiary species from Japan. The term Sapindoides has been 

 used by Perkins for Sapindus-Wko. fruits preserved in the early Ter- 

 tiary lignites of Brandon, Vermont, from which eight species have 

 been described. In some respects the most interesting genus is Sap- 

 indopsis Fontaine represented by three abundant and well preserved 

 species in the Patapsco formation (Albian) of Maryland and Vir- 

 ginia one of which is also present in the Fuson formation of the 

 Black Hills, and which I have shown"**^ to be very probably ancestral 

 forms of the genus Matayba Aublet (Cupaniese) which has upwards 

 of two score existing species in the tropical and subtropical regions 

 of America. This well-marked type suggests the interesting ques- 

 tion of how early in the Mesozoic the ancestors of many modern 

 genera may have been present in equatorial America. 



The genus Patdlinia Linne which has about 122 existing species 

 mostly confined to the American tropics but sparingly represented in 

 Africa and ]\Iadagascar, has an Oligocene species in Prussia and 

 two early Miocene species in southeastern France and Bohemia. 



The genus Thouinia Poit, which in the modern flora has about 

 15 species confined to the West Indies and Mexico, is represented 

 by an early Tertiary, probably Eocene species, in Chili. The genus 

 Nephcliiim Linne with over a score of existing species in southeast- 

 ern Asia is recorded by Unger from the Aquitanian of Greece and 

 by Geyler from the Tertiary of Borneo. 



The genus Koclreiiteria Laxm. is represented by two Chinese spe- 

 cies in the existing flora. In the fossil state it is recorded from the 

 Tertiary of the Island of Sachalin, from Spitzbergen and from 



3G Berry, Md. Geol. Surv., Lower Cretaceous, pp. 467-474, PI- 83-88, 191 1. 



