NO. 2 GENTRY : LAND PLANTS 179 



Southern Baja California mainly along the gulf coast and adjacent 

 islands; type from Carmen Island. Suffrutescent with linear succulent 

 leaves having a large gland at the apex below the claw-like tip ; the in- 

 volucre bracts are 5 or 6, rounded, with a single large gland above the 

 middle. Related to P. tridentatum and, as Johnston suggests (I.e. p. 

 1211), may be only a variety of it. 



PoROPHYLLUM GRACiLE Benth., Bot. Voy. Sulph. 29. 1844. 



Punta Frailes, Cape District, February 16, Dawson 1115. San Jose 

 del Cabo, February 17, Dawson 1218. Puerto Refugio, Angel de la 

 Guardia Island, March 20, Rempel 266. 



Widely distributed in the California Gulf Region and adjacent area 

 in southeastern California and Arizona as far north as the Grand Can- 

 yon, south into Sinaloa; type from Magdalena Bay, Baja California. 



A shrubby herb with purplish, slender stems, small linear leaves, 

 rather colorless or purplish flowering heads, and a pleasant pungent odor 

 when crushed. It is not infrequent through southern Sonora, where it 

 often grows up under shrubbery. 



PoROPHYLLUM PORFYREUM Rose & Standi., N. Am. Fl. 34:191. 

 1916. 



San Jose del Cabo, February 17, Dawson 1166, 1153a. 



Known only from the Cape District; type from San Jose del Cabo. 

 Another linear-leaved species, but characterized by its short, thick, 

 purplish flowering heads. 



Senecio mohavensis Gray, Syn. Fl. 12:446. 1884. 



North end of Los Angeles Bay, March 19, 20, Rempel 261. 



General through the Sonoran Desert. A diminutive winter annual 

 2-3 dm tall, the leaves auriculately clasping, coarsely dentate, both leaves 

 and stems purplish. Sometimes found on shady talus slopes. 



Trixis californica Kell., Proc. Calif. Acad. Sci. I, 2:182, f. 53. 

 1863. 



San Carlos Bay, Sonora, February 8, Dawson 1072. Guaymas, Feb- 

 ruary 9, Dawson 1077. San Jose del Cabo, Cape District, February 17, 

 Dawson 1161. Tortuga Island, March 17, Rempel 216. Puerto Refugio, 

 Angel de la Guardia Island, March 20, Rempel 264. 



A low spreading shrubby bush, long flowering through the spring 

 with numerous heads on short erect branchlets. It is common in arroyos 

 and also on slopes throughout the gulf region and adjacent territory, 

 southern California, southern Sonora; type from Cedros Island. 



