54 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 13 



Widely distributed around the upper half of the Gulf of California 

 in California, Arizona, Sonora, Baja California, and on intervening and 

 adjacent islands. This is a rather dense form of the usuall)^ more open 

 habit of the species, which is characterized by the 3 small very narrow 

 leaflets and the short spreading stipules. 



EUPHORBIACEAE 



Euphorbia bartolomaei Greene, Pittonia 1:290. 1889. 



Cannery Bay on east side of Cedros Island, March 14, Elmore 129^ 

 rocky sandy soil in dry wash ; flowers white. 



One of the small finely cut prostrate spurges inhabiting the arid 

 soils on Cedros Island and adjacent Baja California; type from San 

 Bartolome Bay. 



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



Euphorbia Benedicta Greene, Pittonia 1:263. 1889. 



Cannery Bay on east side of Cedros Island, March 14, Elmore A19, 

 gentle slope on sandy rocky alluvial fan. San Benito Islands, July 14, 

 15, Rempel 370, north side of West Island (flowering). 



Irregularly distributed through the deserts of southern California, 

 Baja California, and perhaps in the Thorn Forest of central Sinaloa 

 (Gentry 7001, near Culiacan) ; type from San Diego, California. 



Eastwood (1929:432) reported it tentatively as collected by Mason, 

 his material being too poor for certain identification. Elmore's number 

 agrees well with typical material from the peninsula. The San Benito 

 Island plants are apparently more succulent and dwarfed in stature, 

 and are perhaps worthy of varietal distinction. 



Buxaceae 



SiMMONDSiA CHiNENSis (Link) Schneider, 111. Handb. Laubholzk 

 2:141.1907. 



Simmondsia californica Nutt., Lond. Jour. Bot. 3:400, t. 16. 1844. 



Simmondsia pabulosa Kell., Proc. Calif. Acad. Sci. 2:21. 1860. 



Cannery Bay on east side of Cedros Island, March 14, Elmore A3, 

 dry wash. East side of Cedros Island, July 10, Rempel 331 (sterile). 



Widely scattered upon the arid slopes on the mountains and in the 

 canyons of the Sonoran Desert from southern California and southern 

 Arizona south into Sonora and through Baja California to the Cape 

 District; the type is probably from San Diego, California, although the 

 describer attributed it to China, due to error in labeling or sorting by 

 the collector who visited both California and China on the same voyage. 



