NO. 2 GENTRY : LAND PLANTS 57 



and often forming dispersed pure stands over considerable area in some 

 localities. 



Cactaceae 



CocHEMiEA PoNDii (Greene) Walton, Cact. Jour. 2:51. 1894. 



East side of Cedros Island, July 10, Rempel 332 (sterile). 



Known only from Natividad and Cedros Islands, the type locality 

 being the latter. 



EcHiNOCEREUS MARITIMUS (Jones) Schuman, Gesambt. Kakteen 

 27. 1898. 



East side of Cedros Island, July 10, Rempel 333 (sterile). 



West coast of Baja California and adjacent islands; type from En- 

 senada. 



Ferocactus chrysanthus (Orcutt) Brit. & Rose, Cactaceae 3: 

 127. 1922. 



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



Northwestern Baja California and the adjacent islands; the type 

 from Cedros Island. The numerous, curved, light brown to gray, an- 

 nular spines in the closely set areoles identify this insular plant. 



Mammillaria Goodridgei Scheer in Salm-Dyck, Cact. Hort. Dyck. 

 1849:91. 1850. 



West San Benito Island, July 14, 15, Rempel 364. 



West coast of middle Baja California and the adjacent islands of 

 Cedros, San Benito, and Guadalupe; type from Cedros Island. Some of 

 the Rempel specimens are fruiting. The series show all low plants tend- 

 ing to be obovate in outline, 5-10 cm high, woody at base, and one plant 

 is branched. 



Opuntia sp. 



San Benito Islands, July 14, 15, Rempel 357, infrequent — mostly top 

 and north sides. 



This is a sterile Cylindr opuntia, showing affinities to the section 

 Imhricatae, The inflated straw-like sheaths of the spines suggest O. cal- 

 malliana, but the joints are too thick, the spines too few, too long, and 

 the areoles too remote for that species. It is neither O. tesselata nor O. 

 prolifera, the only two Opuntia which have been reported (Brandegee 

 1900:20) for the San Benito Islands. The collection probably repre- 

 sents an undescribed species, but is insufficient for diagnosis. 



