WILD FLOWERS OF CALIFORNIA 



33 



SUMACH OR POISON OAK FAMILY— ANACARDIACEAE 



413. 



Rhus diversiloba 

 but quite frequently 



Poison Oak 



Commonly a shrub, but quite frequently climbing up trees like ivy; leaves 



consisting of three leaflets which are three-lobed, coarsely toothed. Clusters of 



white flowers appearing with the leaves. In the autumn the leaves turn red. 



Causes eruption on the skin accompanied by severe smarting and itching. W hy 



it affects some people and not others is interesting. General, but coast ranges 



mostly. 



414. Evergreen shrub Rhus integrifolia Simple leaves, rose-colored 



flowers, red fruits. In- 

 dians made acid cooling 

 drink from fruits. Bark 

 exudes a gum. Southern 

 California. 

 Large evergreen shrub, yel- 

 lowish flowers. Seeds said 

 to yield a pungent oil. 

 Santa Barbara to San 

 Diego. 

 Aromatic shrub ; greenish 

 flowers precede the leaves ; 

 fruit red and acid, and 

 eaten by Indians ; t\viL r < 

 used in basketry. Through- 

 out California, but not 

 common. 



415. Laurel Sumach 



416. Squaw Bush 



Indian Lemonade 



Rhus laurina 



Rhus trilobata var. 



LEGUME FAMILY 



LEGUMINOSAE 



417. Golden Pea 



False Lupine 



Thermopsis macrophylla 

 and vars. 



418. Mountain Pea 



One of the largest and most important families of the vegetable kingdom from 

 an economic standpoint. The soil in which they grow is usually increased in fer- 

 tility, owing to their utilizing the abundant nitrogen in the air through their tuber- 

 culed root svstem. 



Perennial with rootstocks 

 about 1 foot high. Leaves 

 of 3 petioled leaflets at 

 first distinctly whitish due 

 to dense silky hairs, later 

 nearly smooth ; flowers 

 large, yellow ; pod 2 in. 

 long and silky-villous. 

 Xot liked by stock. Coast 

 ranges. 

 In patches, similar to 417 

 and common in adjacent 

 Xevada and may be in 

 X. E. California. 

 Spiny branched shrub with 

 small leaves ; large soli- 

 tary rose-purple flowers 

 and pod about 2 inches 

 long. Ridges, coast ranges 

 and south and elsewhere. 

 LUPINES LUPINUS 



Lupines. 



There are at least 100 species of lupines in the United States with most of them 

 west of the Rocky Mountains, and perhaps fifty species in California. They are 

 mostly annuals or perennials with a few species herbaceous or even woody. The 

 leaves consist of from four to fifteen leaflets radiating from the end of the petiole. 



419. 



Pickeringia or 

 Spiny Chaparral 



Thermopsis montana 



Xvlothermia montana 



420. 



