148 allan hancock pacific expeditions vol. 13 



Cactaceae 



CocHEMiEA PosELGERi (Hildm.) Brit. & Rose, Cactaceae 4:22. 

 1923. 



Punta Frailes, Cape District, February 16, Daiuson 1111. Agua 

 Verde Bay, Baja California, March 10, Rempel 115, in wash. Frailes 

 Bay, Cape District, April 4, Re?npel 327. 



Cape District of Baja California and northward along the Sierra 

 Giganta scarp ; exact locality of type collection unknown. 



EcHiNOCEREUS GRANDis Brit. & Rose, Cactaceae 3:18. 1922. 



San Pedro Nolasco Island, February 6, Dawson 1037; San Esteban 

 Island, February, Dawson 1042. South end of San Esteban Island, 

 March 27, Rempel 294. 



Known only from San Pedro Nolasco, Las Animas, San Lorenzo, 

 and San Esteban Islands in the Gulf of Baja California; the ty^t from 

 San Esteban. Flowers March and April. 



ECHINOCEREUS MAMILLATUS (Engelm.) Brit. & Rose, Cactaceae 

 3:41. 1922. 



West Cove in Concepcion Bay, March 15, Rempel 172 (sterile), 

 hillside of east exposure. Frailes Bay, April 4, Rempel 323a (sterile). 



A short-bodied, long-spined species, the stems tapered at the base. 

 Ranges along the Sierra Giganta scarp and through the mountains of 

 the Cape District; type from "mountain sides south of Muleje, Lower 

 California." 



EcHiNOCEREUs sciURUS (K. Brge.) Purpus, Monatsschr. Kakteenk. 

 14:130. 1904. 



San Jose del Cabo, February 17, Dawson 1222. 



Known only from the Cape District of the peninsula. The tj^pe 

 locality is the hills near San Jose del Cabo, Dawson 1222 being a topo- 

 type. 



EcHiNOCEREus scopuLORUM Brit. & Rose, Cactaceae 3:31. 1922. 



Ensenada de San Francisco, Sonora, March 30, Rempel 315. Guay- 

 mas, January 23, Dawson 1008. 



Native of the coastal mountains of southern Sonora and northern 

 Sinaloa; type from near Guaymas, Sonora. 



EcHiNOCEREUs Websterianus G. Lindsa}^ Cact. Succ. Jour. 19: 

 153. 1947. 



San Pedro Nolasco Island, March 29, Rempel 301, 303; February 

 6, Dawson 1040. 



