144 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 13 



tose, the old glabrous. The flowers are lavender and with only light 

 winter rains the plant will persist in flowering from late winter months 

 through the spring. 



HoRSFORDiA ALATA (Wats.) Gray, Proc. Am. Acad. Sci. 22:297. 

 1887. 



Puerto Escondido, February 11, Dawson 1086. 



California Gulf Region on both the peninsula and the mainland; 

 type from northwestern Sonora, Mexico. The genus is distinguished by 

 its winged carpels ; this species is distinguished from H. Newberryi, the 

 only other Sonoran Desert species, by its relatively large, thickish, ovate 

 leaves and pink petals drying purplish or blue. 



HoRSFORDiA Newberryi (Wats.) Gray, Proc. Am. Acad. Sci. 22: 

 297. 1887. 



West Cove in Concepcion Bay, March 15, Rempel 179, foot of 

 rocky slope. Island in Concepcion Bay, March 16, Rempel 191, in wash. 



Rather infrequently scattered in the lower elevations of the Cali- 

 fornia Gulf Region. It is uncommon or lacking along the outer coast 

 of the peninsula and has a smaller range than H. data. 



SiDA Xantii Gray, Proc. Am. Acad. Sci. 22:296. 1887. 



San Jose del Cabo, February 17, Dawson 1190. 



Known in Baja California and listed also by Standley (C.N.H. 23: 

 765. 1920-26) as occurring in Sinaloa. The type locality is from Cape 

 San Lucas, Baja California. The pale flowers are unusually large for 

 the genus, the petals may be as much as 1.5 to 2 cm long. 



Sphaeralcea Coulteri (Wats.) Gray, Proc. Am. Acad. Sci. 22: 

 291. 1887. 



San Carlos Bay, Sonora, February 8, Dawson 1050. 



In sandy and coarse detrital soils of the Sonoran Desert from the 

 Colorado Desert, California south and in the Sinaloa Thorn Forest 

 south to Mazatlan; type apparently from southwestern Arizona or ad- 

 jacent Sonora. It is a leafy annual, single-stemmed or polj^podial, rather 

 showy with salmon-colored flowers through the arid spring. 



Sphaeralcea Coulteri californica (Rose) Kearney, U. C. Publ. 

 Bot. 19:32. 1935. 



Puerto Escondido, February 11, Dawson 1091. 

 Southern half of Baja California; type from La Paz. 



