Box ELDER AND MAPLES 



Neither the Box Elders nor Maples are 

 found plentifully within our region. The 

 first named tree (Acer Negundo LINN, 

 var. californicum) occurs occasionally 

 along streams in the San Jacinto and 

 San Bernardino Mountains. (Locally 

 abundant along Potato and Edgar Can- 

 yons) . It is not the same as the Box 

 Elder of the Mid- Western United States, 

 but a variety. 



The Black or Big-leaf maple (Acer 

 macrophyllum) , generally occurs as a 

 solitary tree in our mountain canyons in 

 dark, damp, secluded spots. Its large, 

 dark, deep-lobed leaves measure 4 to 

 10 inches across. The thick bark is 

 often very rough with long furrows. 

 The tree forms a spreading crown and 

 often grows very tall. The mountain- 

 eers have made sugar from the sap. 



The yellowish or greenish flowers of 

 all the maples are fertilized by small, 

 short-tongued, lapping insects which 



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