1*70 [Inivet'silji of Calif orum riihlicdfitnis in Botdinj | \'ol. 7 



Haplopappus cervinus Wats, 

 'riiis is a low sliful). scai'ccly a fool lii^li, with rcsiiious-punctat"' 

 leaves. It grows in the t'ootliill eaMons of westei'ii Utali and is espe- 

 cially eoininon along the east side of Salt Lake \'allev, where, however, 

 it does not grow in continuous belts. The ijuality of the rubber is 

 probably similai' to that of Haplopappus iuihks. of which rrrvinus is 

 pei-haps only a variety. The above-ground portions of four samples 

 submitted by Pi'ofessoi- Marcus E. Jones have been aiuil\ze(l with the 

 following result. 



Table 4 — Chemical Analyses 



Place of Collection 

 .'in Near Salt Lake, Utah 

 oo.") Parleys Canon, Utah 

 53()a Parleys Canon, Utah 

 537 Parleys Caiion, Utah 



Haplopappus ericoides (Less.) H. & A. 



This iieatlier-like shrub grows one to five feet bigh. The main stems 

 are one to three inches tbick at base, eitber erect or decumbent, and 

 emit numerous erect branchlets densely clotbed with sbort narrow 

 leaves, the whole plant thus resembling heather. The herbage is green 

 and resinous. The plants grow in sandy soil and are most abundant 

 as well as of greatest size in the sand dunes along the seashore, where 

 they sometimes form extensive colonies. The species extends geographi- 

 cally along the California coast from southern Los Angeles County to 

 San Francisco. The distribution of rubber in this plant is peculiar, if 

 a sample gathered in tlie sand dunes near Moss Beach, south of San 

 Francisco, is characteristic of the species. Only traces of rubber were 

 found in the stems of this plant but in the root, which was analyzed in 

 sections, the j)ercentage gradually increased until at a d('])t]i of two 

 feet it was 3.92. 



