138 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 13 



subshrub with purplish stems 1 to 2 m tall with regularly lanceolate, 

 remote, finely serrate leaves. 



DiTAXis LANCEOLATA (Benth.) Pax & Hoffm. in Pflanzenr. IV, 

 147:64. 1912. 



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

 1032. San Jose del Cabo, February 17, Daivson 1215. 



Open situations in the California Gulf Region, Sonora and Baja 

 California; ty^t from Magdalena Bay, Baja California. A low suffru- 

 tescent plant with pale, linear-lanceolate, cinereus leaves. Also related to, 

 but not conspecific, is Dawson 1150, from San Jose del Cabo. 



DiTAXis NEOiMEXiCANA (Muell. Arg. ) Heller, Cat. N. Am. PI. 5. 

 1898. 



North end of Los Angeles Bay, March 19, 20, Re?npel 257, washes 

 and sandy benches. 



Arid and semi-arid climates from Texas to southern Arizona, Sonora, 

 and middle Baja California. 



Euphorbia californica Benth., Bot. Voy. Sulph. 49, pi. 23B. 

 1844. 



San Jose del Cabo, February 17, Dawson 1170. 



Southern part of the gulf region in Baja California, Sonora, and 

 Sinaloa; type from Magdalena Bay, Baja California. 



The specimen is unusually robust, reflecting better soil moisture con- 

 ditions than commonly obtained in other parts of its range. Questionably 

 referred here also is Rejnpel 70 from Cabeza Ballena, Cape District, a 

 shrub having unusually thin, long petiolate, obcordate leaves, and exfoli- 

 ating bark. 



Euphorbia eriantha Benth., Bot. Voy. Sulph. 51. 1844. 



Los Angeles Bay, March 19, 20, Rempel 248. San Juanico Bay, 

 outer coast, March 2, Re?npel 34. San Jose del Cabo, February 17, Daw- 

 son 1221. 



Throughout the deserts of the California Gulf Region in sandy soils, 

 east to Texas; type from Magdalena Bay, Baja California. 



An erect winter annual with single stem and ascending branches, 

 long linear leaves, and terminal capitate inflorescences, the erect gray- 

 green fruits usually conspicuous. Commonly scattered in dispersed colo- 

 nies over sandy areas. 



Euphorbia leucophylla Benth., Bot. Voy. Sulph. 50. 1844. 

 Punta Frailes, February 16, Dawson 1127. 



