ieee &: 
"stances they germinate immediately after attaining maturity, 
in other cases where they have thicker coats, only after a 
Fic. 400.—Swarm- 
spores of Perono- 
spora infestans. 
(x 390.). 
Fic. 401.-—I. Fly which has putrefied in water and become surrounded by the fila- 
ments of Sapvolegnia ferax (natural size); II. end of one of these filaments 
(greatly magnified) ; III. protoplasm of the end of the filament collecting into ~ 
globular masses : IV. biciliate swarmspores produced from the protoplasm escap- 
ing from the cell. (x 300). 
definite longer time, so that they appear especially adapted | 
for hibernation, and are termed vresting-spores or teleuto- 
spores. Differences also exist in the mode of germination, 
many spores developing at once into a new plant, while 
others first produce spores of a second order or sporiaia, 
which then put out sacs or pro-mycelia (Fig. 407, p. 273); 
and these then either repeat the same process or develope 
into perfect plants. To this class belongs the so-called 
Budding of yeast, 7.e. a continual formation of sporidia 
aa ‘Special Morphology and Classification. 269 
~ 
