LITERATURE CITED 



Bemdt, Herbert W. , and Robert D. Gibbons. 



1958. Root distribution of some native trees and under story plants growing on 



three sites within ponderosa pine watersheds in Colorado. U.S. Forest 

 Serv. Rocky Mountain and Range Expt. Sta. Station Paper 37, 14 pp. 



Bishop, Daniel M. 



1962. Lodgepole pine rooting habits in the Blue Mountains in northeastern Oregon. 

 Ecology 43: 140-142. 



Bormann, F. H., and B. F. Graham, Jr. 



1959. The occurrence of natural root grafting in eastern white pine, Pinus strobus 



L. , and its ecological implications. Ecology 40: 677-691 . 



Biisgen, M., and E. Munch. 



1929. Structure and life of forest trees. 3d rev. and enlarged ed. , 436 pp. , illus. 

 Trans, by Thomas Thomson. New York: John Wiley and Sons. 



Cheyney, E. G. 



1929. A study of the roots in a square yard of jack pine forest. Jour. Forestry 

 27: 546-549. 



1932. The roots of a jack pine tree. Jour. Forestry 30: 929-931. 

 Curtis, James D. 



1952. Response to release of ponderosa pine in central Idaho. Jour. Forestry 50: 

 608-610. 



Douglass, James E. 



1960. Soil moisture distribution between trees in a thinned loblolly pine plantation. 

 Jour. Forestry 58: 221-222. 



Heyward, Frank. 



1933. The root system of longleaf pine on the deep sands of western Florida. 



Ecology 14: 136-148. 



Horton, K. W. 



1958. Rooting habits of lodgepole pine. Canada Dept. North. Aff. and Natl. 



Resources, Forest Res. Div. Tech. Note 67, 26 pp., illus. 



Jeffrey, W. W. 



1959. White spruce rooting modification on the fluvial deposits of the lower Peace 



River. Forestry Chron. 35: 305-311. 



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