NO. 3 DUNKLE : PLANT ECOLOGY, CHANNEL ISLANDS 307 



TABLE 7 (continued) 



ASSS SSSSGM 

 nCRM NBCCIIM 



CUCURBITACEAE (Gourd Family) 

 Echtnocystis guadalupensis 



(Wats.) Dunkle n.c X x x X 



COMPOSITAE (Composite Family) 



Aplopappus canus Blake XXX XX 



Aplopappus *venetu$ Blake 



var. sedoides Munz x x 



Corethrogyne filaginifolia Nutt 



var. robusta Greene X X X x 



Erigeron glaucus Ker X X x x X 



Coreopsis gigantea Hall xxxx xxxxxx 



Hemizonia Clementina Brandg X xxxx 



Eriophyllum Nevinii Gray XXX 



Eriophyllum staechadifolium Lag 



var. depressum Greene x X X 



Artemisia californica Less 



var. insularis Munz XX X 



Senecio Lyonii Gray X XXXX 



Stephanomeria tomentosa Greene X X 



Malacothrix indecora Greene X XX 



Malacothrix Blairii Munz & Jtn X 



Malacothrix saxatilis T. & G 



var. implicata Hall XXX X 



Hieracium argutum Nutt XX X 



islands in the southern group and only nine limited to single islands 

 in the northern group. San Clemente has eleven local endemics, Santa 

 Catalina seven, and Santa Cruz five. 



The distribution of the endemics shared vi^ith Guadalupe is most 

 interesting. Eighteen plants are common to Guadalupe and the southern 

 group, while eleven are common to Guadalupe and both the northern 

 and southern groups. In addition five others are common to Guadalupe, 

 both groups of islands, and to the adjacent coastal area of maritime 

 climate. It would seem that if birds, winds, or ocean currents were 

 responsible for the common endemics they would also be found along the 

 mainland coast. The affinity of these two island regions is even more 

 apparent when it is realized that all but three of the common endemics 

 are to be found on San Clemente, the island closest to Guadalupe though 

 it is almost two hundred and fifty miles distant. 



