NO. 2 gentry: LAND PLANTS 123 



1030', March 20, Rcmpd 274. Tortuga Island, March 17, Reinpel 228. 



Known only from the Colorado Desert, northern Baja California, 

 and the adjacent islands of San Marcos, Angel de la Guardia, and Tor- 

 tuga; type from the Colorado Desert, California. This variety differs 

 from the species in the tendency to produce more numerous and nonin- 

 flated stems. The March specimen from Tortuga is less advanced than 

 the January one of a later year, indicating a broad seasonal tolerance in 

 harmony vi^ith the irregularity of winter rain in the region. 



Chenopodiaceae 



Allenrolfia occidentalis (Wats.) Kuntze, Rev. Gen. PI. 1 :546. 

 1891. 



Agua Verde Bay, Baja California, March 10, Rempel 116, forms 

 mounds on the crescentic dunes. San Francisco Island, March 9, Rempel 

 111, (both sterile). 



In moist saline soils of arid southwestern United States and north- 

 western Mexico from Oregon and Utah south to the Cape District; 

 type from about Great Salt Lake, Utah. A low succulent shrub with 

 brittle short branches and caducous leaves common to the halophytic 

 associations around the lagoons and estuaries of the gulf and western 

 peninsular shores. 



Atriplex Barclayana (Benth.) Dietr., Synop. 5:537. 1852. 



Puerto Refugio, Angel de la Guardia Island, January 26, Daiuson 

 1031. Guaymas, Sonora, January 23, Dawson 1007. Tortuga Island, 

 March 17, Rempel 219, 220. 



A common and widespread bush on salty or nonsalty soils through- 

 out the gulf area in Baja California and western Sonora; type from 

 Magdalena Bay, Baja California. Goldman (C.N.H. 16:326. 1916) 

 reports it as an abundant low shrub 90 to 120 cm high between Calmalli 

 and San Ignacio. In its several varieties it is an abundant and wide- 

 spread plant, either as low decumbent perennial herbs or more erect 

 bushes which may become woody. 



Atriplex polycarpa (Torr.) Wats., Proc. Am. Acad. Sci. 9:117. 

 1874. 



Puerto Refugio, Angel del la Guardia Island, March 20, Rempel 

 271. Los Angeles Bay, Baja California, March 19, 20, Rempel 246. 



Widely distributed in the arid southwest from southern Utah and 

 central California south to Sonora and southern Baja California; type 

 from the Gila River Valley, Arizona. While abundant around the 



