278 
Journal of Agricultural Research 
Vol. XXVI, No. 6 
SUMMARY 
Two diseases of udo are described. The one is a rootrot caused by a 
fungus shown to be very similar to, if not identical with, Sclerotinia 
libertiana. The other is a wilt disease caused by Verticillium alboatrum. 
LITERATURE CITED 
(1) BlSBY, G. R. • * 0 , 
1921. STEM-ROT OP SUNFLOWERS IN MANITOBA. In SCI. AgT., V. 2, p. 58-OI, 
3 fig. Bibliography, p. 61. 
(2) Brown, Nellie A. _ _ 
1914. a snapdragon wilt due to verticillium. In Phytopathology, v. 4, 
p. 217. 
(3) Carpenter, C. W. 
1918. WILT diseases of okra and the verticillium-wilt problem. In 
Jour. Agr. Research, v. 12, p. 529-546, pi. A, 17-27. Literature cited, 
p. 544-546. 
(4) Dana, B. F. 
1921. TWO NEW sclerotinia diseases. In Phytopathology, v. n, p. 225- 
228, pi. 8. 
(5) Fairchild, David. ^ 
1914. EXPERIMENTS WITH UDO, THE NEW JAPANESE VEGETABLE. U. S. Dept. 
Agr. Bui. 84, 15 p., 12 fig. 
(6) JAGGER, I. C. 
1920. SCLEROTINIA MINOR, N. SP., THE CAUSE OF A DECAY OF LETTUCE, CELERY, 
and other crops. In Jour. Agr. Research, v. 20, p. 33 I_ 334 > 1 fig*» 
pl- 59 - 
(7) - 811(1 Stewart, V. B. 
1918. some verticillium diseases. In Phytopathology, v. 8, p. 15-19. 
( 8 ) Lawrence, W. H. 
1912. PLANT DISEASES INDUCED BY SCLEROTINIA PERPLEXA NOV. SP. Wash. 
Agr. Exp. Sta. Bui. 107, 22 p., 9 fig. 
(9) Morris, H. E., and Swingle, D. B. 
1921. AN IMPORTANT NEW DISEASE OF THE CULTIVATED SUNFLOWER . (Abstract.) 
In Phytopathology, v. 11, p. 50. 
(10) Orton, W. A. 
1914. THE FUNGUS GENUS VERTICILLIUM IN ITS RELATION TO PLANT DISEASES. 
(Abstract.) In Phytopathology, v. 4, p. 40-41. 
(11) Stevens, F. L., and Hall, J. G. 
1911. A SERIOUS LETTUCE DISEASE (SCLEROTINIOSE) AND A METHOD OF CON¬ 
TROL. N. C. Agr. Exp. Sta. Tech. Bui. 8, p. 89-143, 31 fig. 
