NOTES ON THE BISHOP PINE 



901 





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SUMMARY 



1. The natural range of bishop pine (Pinus muricata) is extended 

 from Inglenook, Mendocino County, Cahfornia, to Luffenholz Creek, 

 Humboldt County, approximately one hundred miles farther north. 



2. The tree here reaches a much greater size than farther south: 

 45 inches d.b.h. by 166 feet high. Also the trees average higher in 

 merchantable contents than any other tree in the stand excepting the 

 redwood. 



3. The mean annual growth for a 30-year pine stand of bishop pine 

 at Inverness, California, was found to be 143 cubic feet per acre. 



4. Short periods of heating at 150 to 170° F. are more satisfactory 

 for extracting bishop pine seed than longer periods at lower tempera- 

 tures. A temperature of over 200° F. for a short period does not 

 injure the vitality of bishop pine seed. 



5. Cones from Humboldt County trees are lighter in weight on the 

 average than cones from Monterey County but must give off twice 

 as much moisture in order to open. 



