PLATE LXII 
Fig. i.—Wheat seedlings from seed inoculated with spores of Helmintkosporium 
gramineum and from seed externally sterilized; photographed three weeks after plant¬ 
ing. The three rows of pots on the left were sown with seed inoculated with spores 
of H. gramineum from barley, the two rows in the center with sterilized seed, and 
the three rows on the right with spores of H. gramineum from wheat. 
Fig. 2.—Barley seedlings from seed inoculated with Helminihosporium gramineum 
and from sterilized seed; photographed three weeks after planting. The three rows 
of pots on the left from seed inoculated with spores of H. gramineum from barley, 
the next three rows from seed externally sterilized, and the row on the right from 
seed inoculated with H. gramineum from wheat. 
Fig. 3.—Wheat seedlings from seed inoculated with spores of Fusarium culmorum 
from oat seedlings (two rows of pots on right) and from seed externally sterilized (two 
rows of pots on left). Photographed two weeks after planting. 
Fig. 4.—Barley seedlings from seed inoculated with spores of Fusarium culmorum 
from oat seedlings (two rows of pots on right) and from seed externally sterilized 
(three rows on left). Photographed two weeks after planting. 
Fig. 5.—Oat seedlings from seed inoculated with spores of Fusarium culmorum from 
oat seedlings (two rows on right) and from seed externally sterilized (three rows on 
left). Photographed two weeks after planting. 
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