178 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 13 



Middle Baja California and the adjacent islands of San Marcos and 

 Tortuga; type from Santa Rosalia, Baja California. The plant has a 

 limited distribution, has been little collected, and may be a postinsular 

 relic from the mountains south of Santa Rosalia, now migratory upon 

 Quaternary lands. The Tortuga Island collection shows a plant signifi- 

 cantly different in its more robust and diffusive growth, the leaves larger, 

 coarser, and more deeply lobed, and in bearing 20 to 50 rather than only 

 2 to 10 heads as typical of the mainland forms. 



Perityle cuneata Brge., Zoe 1 :54. 1890. 

 Punta Frailes, February 16, Dawson 1118. 

 Southern Baja California; type from Sierra Laguna, Cape D 

 Apparently a postinsular endemic. 



istrict. 



Perityle Emoryi Torr. in Emory, Mil. Reconn. 142. 1848. 



San Carlos Bay, February 8, Dawson 1068, 1073b. Canyon above 

 Puerto Escondido, Sierra Giganta, March 13, Rempel 147, canyon bot- 

 tom. 



Southern California, Baja California, Arizona, and Sonora; ty^t 

 from ^'Cordilleras of California." A common winter-spring annual, abun- 

 dant in many localities of the Sonoran Deserts. 



Perityle incompta Brge., U. C. Publ. Bot. 6:503. 1919. 



Agua Verde Bay, Baja California, March 10, Retnpel 134, beach 

 dunes; Rempel 130, wash. Ensenada de los Muertos, Cape District, 

 March 5, Rempel 77, among rocks close to shore. 



Southern part of the peninsula from San Ignacio south mostly along 

 outer coast; on Santa Magdalena and Santa Margarita Island; type 

 from Los Dolores, Baja California, probably in the Cape District. 



Resembles P. crassifolia somewhat, but lacks the dense glandular pub- 

 escence of that species and the leaves of P. inco?npta are more intricately 

 dissected. 



Perityle Palmeri Wats., Proc. Am. Acad. Sci. 24:57. 1889. 



Guaymas, January 23, Dawson 1003. 



Coastal cerros in southern Sonora; type from Guaymas. Low cespi- 

 tose pilose perennial herb with relatively large radiate heads with yellow 

 rays. 



Porophyllum crassifolium Wats., Proc. Am. Acad. Sci. 24:57. 

 1889. 



West cove in Concepcion Bay, March 15, Rempel 183. 



