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gg MISC. PUBLICATION 303, U. S. DEPT. Or AGRICULTURE 



Ceanothus incanus Torr. and Gray. Coast whitethorn. 



Range: 4. 



Site: Well-drained, moist, sun. 



Fruit: Capsule. 



A large shrub I flowers April-May ; forms extensive thickets ; pioneers in 

 logged woodland areas ; stump sprouts after cutting ; propagation is by seeds 

 treated in hot water to 176 F., cooled, and stratified 3Vi months at 36 ; by 

 this process 70-percent germination may be obtained. 



Ceanothus infesta, see Adolphia infesta. 

 Ceanothus insularis, see Ceanothus crassifolius. 



Ceanothus integerrimus Hook, and Arn. Deer brush. 



O. californica Kellogg, C. integerrimus puberulus Abrams. 



Range: 4, 11. 



Site : Dry, well-drained, sun. 



Fruit: Capsule. 



A small to large, widely branched, shrub ; flowers June-August ; occurs from 

 2,000 to 5,000 feet northward and from 4,000 to 6,500 feet southward ; foliage 

 dense; some leaves persist all winter; rapid growing; stump sprouts after 

 cutting or fire ; withstands grazing well ; reproductive power good ; easily shaded 

 out by pine and fir; 85-percent germination of seed is obtained by heating to 

 176 F. in water, cooling, and stratifying 3^ months at 36 ; 68-percent germina- 

 tion obtained with seeds boiled 1 minute and stratified 3 months. 



Stomach records: Gambel quail. Observations: Of outstanding importance 

 for mule deer; porcupine. The most important browse species for stock in 

 California. Considered poisonous by some but probably of little significance 

 physiologically. A valuable honey plant. 



Ceanothus intermedius Pursh. Redroot. 



O. americanus intermedius Koch. 

 Range : 28, 29, 30. 

 Site : Well-drained, sun. 

 Fruit : Capsule, available in September. 

 A small shrub ; flowers April-May. 



Ceanothus jepsonii Greene. Jepson ceanothus. 



Range : 4. 



Site: Dry, well-drained, sun. 

 Fruit : Capsule. 



A small to large, rigid, erect shrub ; flowers in April ; colony forming ; com- 

 pletely killed by chaparral fires. 



Var. purpurea, Jeps. (C. purpurea Jeps.), the hollyleaf ceanothus, occurs in 

 the southern part of the range. 



Ceanothus lemmonii Parry. Plumas-brush. 



Range : 4. 



Site : Well-drained, sun. 

 Fruit: Capsule. 

 A small, spreading shrub ; flowers April-May. 



Ceanothus leucodermis Greene. Chaparral whitethorn. 



C. divaricatus of auth., not Nutt, C. divaricatus grosse-serratus Torr. 

 Range : 4, 5, 10. 

 Site : Dry, sun. 

 Fruit: Capsule. 



A large shrub to small tree; spreading and spinose, flowers April- May; 

 occurs from 1,000 to 5,000 feet ; persists in spite of fire ; 67-percent germination 

 of seed obtained by heating in water to 158 F., cooling, stratifying at 36 for 

 3 months ; 43-percent germination obtained by heating to 194, cooling, and 

 sowing for 4 months ; about 77,000 seeds per pound. 



Observations: Of outstanding importance as browse for mule deer. Value 

 for livestock limited. 



Ceanothus macrocarpus Nutt. Big-pod ceanothus. 



C. megacarpus Nutt., C. cuneatus macrocarpus (Nutt.) Brandeg. 

 Range: 5. 



Site : Dry, well-drained, sun. 

 Fruit: Capsule. 



