RESPONSE OF PINES TO TREE RUST ISOLATES 503 



Peterson, R. S. 196". The Peridermium species on pine stems. Bull. 



Torrey Bot . Club 94: 511-542. 

 Snow, G. A. 1968. Time required for infection of pine by Cronartium 



fusi forme and effect of field and laboratory exposure after inoculation, 



Phytopathology 58: 1547-1550. 

 Snow, G. A., F. F. Jewell, and L. N. Eleuterius. 1963. Apparent recovery 



of slash and loblolly pine seedlings from fusiform rust infection. 



U.S. Dep. Agr. Plant Dis . Rep. 47: 318-319. 

 Snow, G. A., H. R. Powers, Jr., and A. G. Kais . 1969. Pathogenic 



variability in Cronartium fusi forme. Tenth South. Conf. on Forest 



Tree Improv. Proc, p. 136-139. 



FLOOR DISCUSSION 



Panel leader SchUtt withheld discussion of this paper until after 

 the closely related paper by Dr. Powers, immediately following. 



