NO. 2 GENTRY : LAND PLANTS 73 



LITERATURE CITED 



Grayson, A. J. 



1871. Exploring expedition to the island of Socorro. Proc. Boston Soc. Nat. 

 Hist. 14:287-302. 



Hanna, G. Dallas 



1926. Expedition to the Revillagigedo Islands, Mexico, in 1925. Proc. Calif. 

 Acad. Sci. IV, 15:1-113. 



Johnston, I. M. 



1931. Flora of the Revillagigedo Islands. Proc. Calif. Acad. Sci. IV, 20:9-104. 



