
ra 
New York AgericutturaL Experiment Station. 533 
Dissasxp sexp— When anthracnose infected seed is planted 
the disease most frequently is found on the seed leaves (cotyled- 
ons) as soon as they push. through the surface of the soil, but it 
may be found on any other part of the plant above the roots. 
Semetimes it eats through the main stalk and in that way 
destroys the young plant, or it may kill it before it is able to lift 
itself through the surface of the soil. By killing the young seed- 
lings and the germinating seed a good stand of beans is prevented 
sometimes causing a loss of twenty-five per cent. of the seed 
planted. Dr. Halsted* reports a loss of fifty per cent. on seed 
grown indoors in boxes. With such seed planted in the field 
even a greater loss might occur. Fig. 1 from a sketch of a dis- 
eased seedling shows the pits on the seed-leaves and along the stem. 
The stem is nearly eaten through by the disease. 
APPEARANCE ON YOUNG PLANTS.— With those plants which suc- 
ceed in outgrowing its early attacks, the disease continues its 
depredations on stems and foliage. Very often it eats off the 
stalklet of a leaflet at the point where it is attaehed to the 
main leaf stalk (petiole), and frequently it drops the whole leaf 
by eating through the petiole at the joint near the base of the 
leaf. 
APPEARANCE ON LEAVES.— Figure 2 from 2 photograph shows 
the appearance of the disease on the underside of a leaf. It 
causes the veins to become black and shriveled, and in the softer 
tissue it forms dark spots. It seems to show a fondness for the 
veins of the leaf and for the fiber bundles of the plant. These 
are blackened by its attacks.: One of its most characteristic 
appearances is seen in the dark-colored veins and veinlets on 
the under side of the leaf. It may also become established in 
the soft green substance of the leaf (parenchyma) between the 
veins where it usually forms narrow, elongated, dark-colored 
patches that soon break away and leave irregular cracks in the 
leaf with blackened edges. 
APPEARANCE ON pops — The appearance of the diseased spouts 
on the pods is well shown in Fig. 2. On the sides of the pods, 
er of the tender young stems, it is readily recognized by the black 


* Annual Report of New Jersey Experiment Station, 1891, p. 285, 

