DESCRIPTION OF PLATES 
Plate XXXIII. Fig. i.—Pecan nuts infected with the anthracnose fungus by spray¬ 
ing with a distilled water suspension of conidia, showing the ap¬ 
pearance nine days after inoculation. Natural size. Fig. A. — 
Four check nuts, two punctured with sterile needle and two 
unpunctured. Fig. B. —Four nuts inoculated upon the unpunc¬ 
tured surface of the hull. Fig. C. —Four nuts inoculated after 
puncturing the surface of the hull with a sterile needle. 
Fig. 2.—Three of the infected nuts shown in figure i after further 
development of the acervuli. X i 
XXXIV. Yellow Newtown apples infected by needle puncture with conidia 
of the anthracnose fungus from pecan and apple, showing appear¬ 
ance four days after inoculation. One-half natural size. Fig. 
A .—Check apples punctured by sterile needle. Fig. B. —Apples 
infected by needle punctures with strain x50 from the apple. Fig. 
C.—Apples infected with strain 123 from a diseased pecan hull. 
Fig. D .—Apples infected with strain 125 from a diseased pecan 
hull. 
XXXV. Yellow Newtown apples infected by needle puncture with conidia of 
the anthracnose fungus from pecan and apple, showing appearance 
four days after inoculation. Two-thirds natural size. Fig. A. — 
Check apple punctured by sterile needle. Fig. B. —Apple 
infected with strain 125 from the pecan nut. Fig. C.—Apple 
infected with strain 123 from the pecan nut. Fig. D.—Apple 
infected with strain 150 from the apple. Fig. E .—Apple infected 
with strain 146 from the pecan leaf. Fig. F .—Apple infected 
with strain 158, a reisolation of strain 125 after passage through 
the apple. 
XXXVI. Crown-gall (caused by Bacterium tumefaciens Sm. and Town.) on 
pecan nursery trees from southern Mississippi. Natural infection. 
Two-thirds natural size. Fig. 1.—The soft type of gall. Fig. 
2.—The hard type of gall. 
XXXVII (colored). Fig. A. — A pecan leaflet infected with the brown leaf- 
spot fungus ( Cercospora fusca , emend, sp.) from pure culture. 
Fig. B .— A pecan leaflet infected with the anthracnose fungus 
(Glomerella cingulata (Stonem.) S. and v. S.) from pure cul¬ 
ture. Fig. C.—View of upper surface of a pecan leaflet recently 
infected with the nursery-blight fungus ( Phyllosiicia caryae 
Peck) from pure culture. Fig. D .— A pecan kernel infected 
with the kernel-spot fungus ( Coniothyrium caryogenum, n. sp.) 
from a pure culture, showing the appearance eight days after 
inoculation. Fig. E. — A pecan kernel with the kernel-spot from 
natural infection. Fig. F. — A pecan nut infected with the an¬ 
thracnose fungus from pure culture. Fig. G .—The nursery- 
blight fungus upon synthetic agar after two weeks. Fig. H .— 
The nursery-blight fungus on corn-meal agar after two weeks. 
Fig. I .—Views of the upper and lower surfaces of pecan leaflets, 
showing an advanced stage of the nursery-blight. Natural infec¬ 
tion. Fig. /.—The brown leaf-spot fungus on synthetic agar 
after four weeks. Fig. K .—The brown leaf-spot fungus on corn- 
meal agar after four weeks. (All figures are natural size.) 
( 338 ) 
