PLATE 85 
Choanephora cucurbitarum: 
A. —Immature conidiophore with ramuli developing on the primary vesicle. 
Xioo. 
B. —Budlike processes the beginning of conidial formation on the capitellum. 
Xioo. 
C. —Conidia. X250. 
D. —Mature capitulum covered with a layer of conidia. X125. 
E. —Primary vesicle from which ramuli have been detached. Xioo. 
F. —Mycelium in tissue of squash flower pedicel. X75. 
G. —Germination of conidia 3^ hours old in nutrient agar. X250. 
H. —Germination of conidia 3^ hours old in water. X250. 
I. —a, Early stage in germination of conidia in hanging drop; b, growth of mycelium 
from same conidia as figure a drawn 15 minutes later; c, one-half hour later than 
figure a; d t 15 minutes later than figure c; e, one hour later than figure a. X250. 
J. —Germination of sporangiospores. X250. 
K. —Mycelium of the fungus within the tissues of squash fruit. X250. 
L. —Variation in size of sporangia and columella. X70. 
M. —Chlamydospores borne in chains in old cultures. X250. 
N. —Sporangiospores with tufts of hairlike appendages. X250. 
O. —Chlamydospores formed singly in 4-day-old cultures. X250. 
(328) 
