NO. 2 GENTRY : LAND PLANTS 41 



Perityle Emoryi Torr. in Emory, Rep. N. Mex. Bound. Sur. 142. 

 1848. 



San Clemente Island, February 18, 19, Elmore 414, 385. 



Widespread from southern California to Arizona south in Mexico 

 to southern Sonora and throughout Baja California; also on Santa Cata- 

 lina, Santa Rosa, Santa Cruz, San Clemente, and Cedros Islands. It 

 is an aggressive winter annual with white rays in the arid maritime 

 climates. 



Senecio Lyonii Gray, Syn. Fl. I, 2:456. 1886. 

 San Clemente Island, February 18, 19, Ehnore 404, 399. 

 On the Channel Islands of San Clemente, Santa Barbara, Santa 

 Cruz, and in Baja California. 



SiLYBUM Marianum (L.) Gaertn., Fruct. 2:378. 1791. 

 Santa Cruz Island, August 2, Ehnore 264. 



Common weed in California naturalized from Europe; also on Santa 

 Catalina Island. 



SONCHUS OLERACEUS L., Sp. PI. 794. 1753. 

 Santa Barbara Island, August 12, Elmore 304, dry hillside. 

 Common weed in wasteland, naturalized from Europe; widespread 

 on the islands and probably on all of them. 



