NO. 3 dunkle: plant ecology, channel islands 331 



Helenieae 



Perityle Emoryi Torn Cliff Daisy. 



Annual. Common on talus slope of southern bluffs and at upper edge of 

 splash zone. On all the islands, Except San Nicolas; mainland to Mexico. 

 Closely related forms on Guadalupe Island. Indigenous. 



Baeria chrysostoma F. & M. var. gracilis (DC) Hall. Gold Fields. 



Annual. Occasional in shallow soil of exposed ridges. On all the islands, 

 including Guadalupe; mainland throughout California to edge of desert. 

 Indigenous. 



Baeria hirsutula Greene. Succulent Gold Fields. 



Annual. Abundant on rounded, windy breaks and headlands. Also on Santa 

 Catalina, Santa Rosa, Santa Cruz, and San Miguel islands; coastal central 

 California. Endemic to areas of California maritime climate. 



Eriophyllum Nevinii Gray. Island Dusty Miller. 



Low suffrutescent shrub. Occasional on upper part of splash zone; also on 

 the two adjacent islets. Also on Santa Catalina and San Clemente islands, 

 with a related form on Guadalupe Island. Insular endemic. 



Amblyopappus pusillus H. & A. Coquimbo. 



Annual. Abundant on southern bluff breaks, the central ridge, and eastern 

 terrace. On all the islands, including Guadalupe; adjacent mainland coast; 

 South America. Origin uncertain, possibly a very early introduction. 



Anthemideae 



Achillea millefolium L. var. lanulosa (Nutt.) Piper. Yarrow. 



Suffrutescent perennial. Common and widespread on terraces and northern 

 exposures. On all the islands; mainland from Mexico to British Columbia. 

 Closely approaches var. mariiima Jepson, and taxonomic status in view of 

 later revisions of species. Maritime variant of a cosmopolitan complex. 



Artemisia calif ornica Less var. insularis (Rybd.) Munz. Island Sage Brush. 



Suffrutescent woody shrub. Common and widespread on eastern terraces, 

 southern exposures of canyons, and southern bluffs. Also on San Nicolas 

 and San Clemente islands. 



Cichorieae 



Malacothrix foliosa Gray. Lava Daisy. 



Annual. Abundant on windy breaks and headlands. Also on Santa Cruz 

 and San Clemente islands. Insular endemic. 



Sonchus oleraceus L. Sow Thistle. 



Annual. Common and widespread in all parts of the island. On all the 

 islands; mainland. Introduced from Europe. 



