May 16,1921 
253 
Temperature Relations 0} Cladosporium citri 
(8) The conditions necessary for scab infection indicated by these 
experiments are (i) viable spores of the fungus, (2) young citrus leaves 
of a susceptible species, (3) moisture, and (4) temperatures between 16 0 
and 23 0 G. 
literature CITED 
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1910. CLADOSPORIUM CITRI MASS. AND C. ELEGANS PENZ. CONFUSED. In MyCO- 
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(2) - 
1912. CITRUS SCAB. Fla. Agr. Exp. Sta. Bui. 109, p. 5i-[6o], fig. 24-31. 
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(3) - 
1916. CITRUS SCAB. In Phytopathology, v. 6, no. 6, p. 442-445. 
( 4 ) - 
THE TEMPERATURE RELATIONS OF GROWTH IN CERTAIN PARASITIC FUNGI. 
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(5) GrossEnbacher, J. G. 
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ology, v. 6, no. 2, p. 127-142, 4 fig. 
(6) Hesler, L- R. 
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19 1 !* P- 30 - 3 1 - 
(7) Livingston, B. E., and Fawcett, H. S. 
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(8) Scribner, F. Lamson. 
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( 9 ) - 
1887. REPORT OF THE MYCOLOGICAL SECTION. ORANGE-LEAF SCAB. CLADO¬ 
SPORIUM sp. In U. S. Dept. Agr. Rpt. 1886, p. 120-121, pi. 6. 
(10) Stevens, H. E. 
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(11) - 
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(14) -and Webber, Herbert J. 
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