YELLOW LUPINE (Lupinus arbor eus, Sims). Flowers frag- 

 rant, yellow, in long racemes; leaves compound with finger- 

 like leaflets radiating from a common centre. A stout, 

 shrubby plant 4 to 10 feet high, blooming in spring and common 

 in the sands bordering on the sea from Central California 

 southward. 



The Yellow Lupine has played an important part in holding 

 shifting sands along the Coast, the huge roots, sometimes 20 

 feet in length, being natural sand binders. This quality was 

 turned to particular service a number of years ago at San 

 Francisco where a considerable area of bare sand-lots, which 

 had been continually blown about by the strong ocean winds 

 from time immemorial, were efficiently stabilized in a year 

 oy the systematic planting of this Yellow Lupine. 



Besides Lupinus arboreus there are five or six other yellow- 

 flowered species indigenous to California. One of these, L. 

 luti'dus, Kellogg, 3 to 5 feet high, has proved to be a serious 

 pest in some interior valleys of Northern California, from its 

 habit of monopolizing the ground. It is locally kno.vn as 

 Butter-weed from the color of the flowers. 



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