146 
FUNGI. 
pears. The form of the latter is at first globular, then ellipsoid, 
and more or less curved. All these phases of vegetation are 
accomplished in less than twelve hours, and if the spore is 
Fic. 85.—Germinating pseudospore of 
Puccinia Molinie. (Tulasne.) 
mature and ready for germina- 
tion, it is sufficient to provoke it 
. by keeping the pseudospores in a 
humid atmosphere. During this 
process the two cells do not sepa- 
rate, nor does one commence ger- 
mination before the other, but 
both simultaneously. When the 
sporules are produced, the proto- 
spore, somewhat analogous to a 
prothallus, has performed its 
functions and decays. Towards 
the time of the falling, of the 
sporules they are nearly all 
divided into four unequal cells 
by transverse and parallel septa. 
These sporules in time produce, from any point on their surface, 
a filament, which reproduces a new sporule, resembling the first, 
Fic. 86.—Germinating pseudospore of 
Triphragnium ulmarie. 
(Tulasue.) 
but generally smaller. This 
sporule of the second genera- 
tion ordinarily detaches itself 
from its support before germi- 
nating. : 
The pseudospores of Triphragq- 
mium ulmari@ have been seen in 
April germinating on old leaves 
of the meadowsweet which sur- 
vived the winter, whilst at the 
same time new tufts of the spores 
were being developed on the 
leaves of the year. These fruits 
of the spring vegetation would 
not germinate the same year. 
Each cell in germination emits a long cylindrical filament, con- 
