154 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 13 



Spines, either whitish or yellow, characterize this species among the 

 platyopuntia of the peninsula. 



Opuntia aff. fulgida Engelm., Proc. Am. Acad. Sci. 3:306. 1856. 



San Pedro Nolasco Island, March 29, Rempel 304a. 



Doubtfully referred here, the specimen also shows relationship to O. 

 ciribe Engelm., a peninsular species (see Maps 1 and 2). 



Opuntia Gosseliniana Weber, Bull. Soc. Acclim. France 49:83. 

 1902. 



Ensenada de San Francisco, Sonora, March 30, Rempel 313. 



Reported by Britton and Rose from *'Sonora and Lower California, 

 Mexico;" type locality, ''Coast of Sonora on the Gulf of California." 

 Rempel's collection is flowering and typical except that the joints are 

 suborbicular being broader than long. 



Opuntia invicta Brge., Proc. Calif. Acad. Sci. II, 2:163. 1889. 



Los Angeles Bay, March 19, 20, Rempel 233 (fruiting), in wash 

 on fan. 



Central part of the peninsula, the t^^pe from San Juanico Bay. A low 

 plant with trailing stems, short thick joints with high tubercles, large, 

 3-cornered, whitish, sheathless spines, and bristly fruits. 



Opuntia leptocaulis DC, Mem. Mus. Hist. Nat. Paris 17:118. 

 1828. 



Tiburon Island, January 25, Dawson 1020. 



Widely distributed in both the high and low deserts of the south- 

 western United States and Mexico ; type locality in Mexico. 



Opuntia ramosissima Engelm., Am. Jour. Sci. II, 14:339. 1852. 



Los Angeles Bay, March 19, 20, Rejnpel 231 (flowering), in wash. 



Widely distributed in the southwestern United States and adjacent 

 Mexico west of the continental divide; type from near the Colorado 

 River in California. This appears to be the first cited collection from 

 Baja California, although the species has long been known to occur there. 



Opuntia versicolor Engelm. in Coulter, C.N.H. 3:452. 1896. 



Ensenada de San Francisco, Sonora, March 30, Rew.pel 312. South 

 end of San Esteban Island, Rempel 291. 



Widely distributed in the northern part of the gulf region on the 

 mainland from southern Arizona to southern Sonora ; type from Tucson, 

 Arizona. I have seen no specimens nor records referrable to the peninsula 

 and the above citation from San Esteban Island is the first for the gulf 

 islands ; fruiting, it compares favorably with mainland material. 



