THE FLORA OF THE SAINT EUGENE SILTS 



421 



native in northern 8outh America and the West Indies, and may 

 be regarded as a strictly tropical type of vegetation. 



The genus F(igi(s includes three recognized species, all of 

 them limited in their distribution to the Northern Hemisphere. 

 F. grandifolia {~ F. americana Sweet) is the only species native 

 in America. It ranges from Nova Scotia westward to Wiscon- 

 sin, southward to Texas and eastward to the Atlantic coast. F. 

 sylvatica is a European species. 



Ficus is a cosmopolitan genus, widely distributed throughout 

 the tropical regions of both the Old World and the New. F. 

 Krugiana is native in the AYest Indies ; F. populnea extends as 

 far north as Florida; F. tecolutensis is a Mexican species; F. 

 popidoides is West Indian. 



Hicoria is a strictly North American genus, including one 

 Mexican species and about a dozen native in the eastern part of 

 the continent, from Quebec, Ontario, and Minnesota, southward. 

 F. glabra {=Carga porcina Nuttall) and F. ovata {=Carga 

 alba Nuttall) all have approximately the same range from Min- 

 nesota to Texas and eastward to the Atlantic coast. 



Passi flora is cosmopolitan in its distribution in tropical and 

 subtropical regions, a few species extending into the temperate 

 zones. P. incarnata is included among the latter, having a dis- 

 tribution in the eastern United States that extends from the 

 Gulf States to about the latitude of Virginia and Missouri. 



The genus Platanus is an element in the flora of the north 

 temperate regions of the Old World and the New, one species 

 extending southward, in the mountains, into Mexico. P. occi- 

 dentalis ranges throughout eastern North America from Maine 

 to Ontario southward, and eastward from Nebraska to Texas. 



The genus Quercus is subtropical to subboreal in its distribu- 

 tion, in Eurasia and North America, extending southward into 

 the Southern Hemisphere by way of the mountains of Mexico, 

 Central and South America. Q. Prinus is an eastern North 

 American species, ranging from Maine to Ontario and' south- 

 ward to Tennessee, Alabama, and Georgia. Q. tepicana, Q. 

 Galeottii, Q. insignis, and Q. cgclohalanoides are Mexican spe- 

 cies, and Q. odcarpa is a native of Central America. 



Tilia is a genus that is confined to the Northern Hemisphere 

 in both the Old World and the New. In North America one spe- 



