]9loJ Hull: \( tc and Svlcwurlluj (Udifoniiaa i'lants 175 



12 111111. altis, pilosis filandulosis, 20-30 lloris; involucri s(|uamis 8-13, 

 oblongis, aeiitis : corollis cylindraeeis, pubesceiitibiis, acute o-dentatis: 

 styli raiiiis nhtusis. [jiilx'scciitihiis. sine ajipendicnla : afliaoniis tcrftihus. 

 ea. 7 111111. lougi.s, eaiiL'seentibus, ad])resse j^ilu.si.s, •^laiidiilosis : pappi 

 setis rigidulis barbellatis. 



Salt Creek, Shasta County, California, at an altitude of 430 m., June, 19(l3, 

 H. M. Hall and E. H. Babcock, no. 4013 (Herb. Univ. Calif, no. 53880), type. 



Notwithstandino- the perplexing array of species described under 

 Arnica in late years, this one appears to have no near relatives. It 

 grows on hot. dry slopes of the foothills and may be an offshoot of 

 A. amplexicaulis, a species of stream banks and moist meadows in the 

 higher mountains, hut its dry, rigid and prominently veined foliage 

 and eanescent akenes at onee distinguish it. The leaves are strongly 

 3-5-nerved from the liase and with numerous ero.ss-veinlets. 



Transmitted April 23, 1915 



