68 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 13 



habitats, associates, flower-color, etc., of the various plants of the islands. 

 Few, if any, notes have been made which would permit the botanists 

 who have not visited the islands to visualize the living plant and see it 

 in relation to its environment. The plant ecology of the islands is an 

 untouched subject." That is as true today as it was when Johnston 

 wrote it. 



Elmore's collection of 11 numbers is annotated below along with 

 those of Clarion. 



Catalogue of Collections 



polypodiaceae 



Cheilanthes peninsularis insularis Weatherby, Am. Fern 

 Jour. 21:25. 1931. 



Braithwaite Bay, Socorro Island, March 18, Elmore C8, elev. 100 

 feet. 



This variety is endemic to the Revilla Gigedo Islands, where it has 

 been collected from Socorro and Clarion. Elmore reports it growing in 

 shaded crevices of lava rocks in the side of a canyon. 



Gramineae 



Cenchrus mysuroides H.B.K., Nov. Gen. & Sp. 1:115, t. 35. 

 1816. 



Braithwaite Bay, Socorro Island, March 18, Elmore CI, among 

 boulders on upper beach. 



Widely distributed in the warmer parts of North America. 



JouvEA PiLOSA (Presl) Scribn., Bull. Torn Bot. Club 23 :143. 1913. 



Braithwaite Bay, Socorro Island, March 18, Elmore C4, among 

 lava rocks on steep slopes, elev. 10 feet. 



Widely scattered along the coast from southern Baja California to 

 Nicaragua. 



Sporobolus argutus (Nees) Kunth., Enum. PI. 1.215. 1833. 

 Sulphur Bay, Clarion Island, March 16, Elmore B12, on edge of 

 fresh water lagoon. 



From Kansas to Arizona and south through tropical America. 



MORACEAE 



Ficus cotinifolia H.B.K., Nov. Gen. & Sp. 2:49. 1817. 

 Braithwaite Bay, Socorro Island, March 18, Elmore C6, elev. 20 

 feet. 



