1 66 W. S. Cooper 



also a record from Point Arena. The southernmost recorded oc- 

 currence on the mainland is at Redondo, Los Angeles County. 

 It is found also on the islands oflF the coast of southern California. 

 Numerous specimens from interior stations in southern Califor- 

 nia and in Oregon are probably not of this species. There has 

 been no opportunity for critical study of these, and they are not 

 recorded on the map. It seems clear that L. chamissonis is a 

 coastal representative of a small complex of forms, mosdy 

 shrubs, ranging over the southern Coast Ranges and southern 

 California. The other species recognized by Smith (in Jepson, 

 1925) are L. longifolius (Wats.) Abrams and L. albifrons Benth., 

 the latter including several varieties. 



Haplopappus ericoides (Less.) H. and A. [Ericameria eri- 

 coides (Less.) Jepson], figure 8^, is one of the two most char- 

 acteristic dominants of the dune shrub community of the cen- 

 tral California coast; it is a constant companion, within its range, 

 of Lupinus chamissonis. It extends from Bodega Point, Sonoma 

 County, to Los Angeles. Very rarely does it stray inland, but 

 sometimes it grows on soils other than dune sand. For this spe- 

 cies we have available, in the work of Hall (1928), a thoroughly 

 adequate discussion of taxonomic and genetic relationships. This 

 provides the best possible illustration of speciation in the coastal 

 belt from adjoining inland stock, and therefore a detailed presen- 

 tation is justified. 



The genus Haplopappus, as conceived by Hall, is a very large, 

 complex group which has usually been divided into a number of 

 separate genera. Hall summarizes its history as follows. All avail- 

 able evidence suggests Mexico as the point of origin. In time 

 came a separation into two groups, one now confined to North 

 America, the other to South America. Among the North Ameri- 

 can species the section Ericameria, to which H. ericoides belongs. 



