PLATE 3 
Oospora lactis parasitica 
A-D.—Types of branches. A.—Short branches which arise near the septa at an 
angle of about 45° with the filament and break up into more or less rotmded, irregu¬ 
larly shaped cells which function as spores. B-D.—Long branches which bear 
lateral branches of type A, but also break up into numerous cells capable of imme¬ 
diate germination. 
E-F.—Segmented branches of type A; also early stages in the segmentation of the 
central filament. 
G. —Order of segmentation in branch of type A. 
H. —Highly ma^ified detached cells of lateral branches and central filament. 
I-M.—Germinating detached cells. 
N-T.—Penetration of irregular, wavy, somewhat separated walls of partly destroyed 
cells by tips of growing hyphae. 
U. —Cells of tomato fruit tissue containing hyphae surrounded by digestion 
vacuoles. 
V. —Penetration of the cell wall of a tomato fruit cell by a germinating spore, (a) 
Germinating spore, {h) Cell wall, (c) Hole made in the wall by the germ tube. 
Somewhat diagrammatic. 
