YEASTS AND MOULDS. 



wall, the filament reaches an intercellular space, where the myiM-lium 

 develops. This continues to grow and spivad thn.u.irh.mt tin- plant. 

 In tubers it can hibernate and develop in the young shoots in tin- 

 following spring. The fungus appears in the form of brown 

 patches on the green parts of the plants, especially the leaN 

 The attacked parts wither and turn yellow or brown in od 

 If the under surface of a diseased leaf is examined, a corresponding 

 .lark spot may be observed, accompanied with a faint greyish-wh 

 bloom, which covers it. The latter consists of the conidia-bear 



branches. 



Pilobolus. The fruit-hyphse possess spherical 

 containing conidia. When ripe the receptacles with th-ir tronidia 

 are detached at their bases, and spring by their elasticity 1 

 distance. The fungus occurs as glassy tufts on the 

 cows, horses, etc. A cultivation can generally be obtain 

 keeping fresh horse-dung under a bell-glass. 



Mucor mucedo. Hyphse colourless, simple or brui 

 rania yellowish-brown or black; spores ovoid. Tl,,v t 

 familiar white mould on fruits, bread, potatoes and 

 penetrate into the interior of nuts and .ftta, A i 

 fibrils develops in the substance of nutrient gelatine v 

 turn of sporangia on the free Burfcu* Th, mmrfoa d 

 spores and development into hyph* can b ' * ' 



^urs if the Z ^ cultivated n Uta <* ***-*?* 



Mucor racemosus.-Hyph. short; spcW 

 " , und By continm-d cultivatu.n in hqdi 



Mucor Phycomyces U, IK ^ 



*"' Mucor fusiger (Li,l,,heim).-0void por,. 



