Yellow Spotting of Citrus Leaves 
PLATE I. (Continued.) 
Fig. 9—Scab Fungus, cladosporium citri, 
photographed through the microscope. Mag¬ 
nified 600 diameters or 360,000 times the orig¬ 
inal area, (a) spore, (b) mycelium grown 
from a spore. 
fig. fi¬ 
scal:) on leaves and new growth of sour 
orange. Natural size. 
* 
■ 
ft it 
■ x 
. * 'it. s 
(SgJJ* r ’' i 
Fig. 7—Scab on young grapefruit. Natural size. Fig. g—Scab fungus, cla¬ 
dosporium citri. Pure 
culture growing on a piece 
of sterilized sweet potato 
in a test tube. 
