118 BROOKLYN BOTANIC GARDEN MEMOIRS 



Eugenia sessiliflora Vahl 

 Chrysophyllum Eggersii Pierre 

 Forestiera Eggersiana Krug & Urban 

 Salvia thomasiana Urban 

 Physalis Eggersii O. E. Schulz 

 Solanum conocarpiim L. C. Rich. 

 Wedelia cruciana L. C. Rich. 

 Phascum sessile E. G. Britton 

 Anthracothecium Breutelii Muell. Arg. 

 Lecania euthallina Riddle 

 Caloplaca suhseqiiestra (Nyl.) Riddle 

 Buellia prospersa (Nyl.) Riddle 

 Mycoporellum ellipticum Muell. Arg. 



The endemic elements are, then, only about 2.6 percent, of the 

 native flora. A few other species are almost endemic, being otherwise 

 known only on Porto Rico or on some other neighboring island. 

 There are a few endemic species known on Tortola, and one on Anagada, 

 but if the native species of these two islands, additional to those of St. 

 Thomas, St. Jan and St. Croix, were taken into account, the percentage 

 of endemism would not be increased. 



Porto Rico, with a very much greater area and much higher moun- 

 tains, has about 13 percent of its species of Spermatophyta and Pteri- 

 dophyta endemic. 



