June, 1955 Curt: Oak WILT INOCULA 323 
Morris, C. L., and C. L. Fergus 
1952. Observations on the production of mycelial mats of the oak wilt fungus in Penn- 
sylvania. Phytopathology 42(12) :681-2. 
Norris, Dale M. 
1953. Insect transmission of oak wilt in Iowa. U. S. Dept. Ag. Plant. Dis. Reptr. 
37 (8) :417-8. 
Riker, A. J. 
1948. The menace of oak wilt. Arborist’s News 13(7) :53-5. 
Rosen, H. R., and L. M. Weetman 
1940. Longevity of urediospores of crown rust of oats. Ark. Ag. Exp. Sta. Bul. 391. 20 pp. 
Staley, J. M., and R. P. True 
1952. The formation of perithecia of Chalara quercina in nature in West Virginia. Phyto- 
pathology 42(12) :691-3. 
Stessel, G. J.. and Bert M. Zuckerman 
1953. The perithecial stage of Chalara quercina in nature. Phytopathology 43(2) :65—70. 
Strong, F. C. 
1951. Oak wilt found in Michigan. U. S. Dept. Ag. Plant Dis. Reptr. 35(8) :383. 
Talbot, P. H. B. 
1952. Dispersal of fungus spores by small animals inhabiting wood and bark. British Myco- 
logical Society Transactions 35:123. 
True, R. P., J. M. Staley, J. G. Leach, H. L. Barnett, and C. K. Dorsey 
1952. Liberation of spores from natural reservoirs facilitates overland spread of oak wilt. 
(Abs.) Phytopathology 42(9) :476. 
Wilkins, W. H. 
1938. Studies in the genus Ustulina with special reference to parasitism. III. Spores-germina- 
tion and infection. British Mycological Society Transactions 22:47-83. 
Wolf, Frederick A., and Frederick T. Wolf 
1947. The fungi. Vol. Il. John Wiley and Sons, Inc., New York. 538 pp. 
Wysong, Noel B. 
1949. Rapid spread of oak wilt in the Midwest. Am. Nurseryman 90(10) :14, 17, 55-7. 
Young, Roy A. 
1949. Studies on oak wilt, caused by Chalara quercina. Phytopathology 39(6) :425—41. 
Young, H. C., and G. J. Bart 
1951. Oak wilt in Ohio. Aerial survey shows general infection in state’s timber area. Ohio 
Farm and Home Res. 36(272) :67-8, 71. 
Young, H. C., and Oren Spilker 
1952. Longevity of disease organism getting attention in oak wilt project. Ohio Farm and 
Home Res. 37 (279) : 97-8. 
Young, H. C., G. J. Bart, Oren Spilker, W. H. Brandt, and R. B. Redet 
1953. Progress of oak wilt investigations in Ohio. U. S. Dept. Ag. Plant Dis. Reptr. 
37 (4) : 244. 
Zuckerman, Bert M., and E. A. Curl 
1953. Proof that the fungus pads on oak-wilt killed trees are a growth form of Endoconidio- 
phora fagacearum. Phytopathology 43(5) :287-8. 
