584 APPENDICES. 



Mucor mellittophorus (Lichtheim). — Spores elliptical. Found 

 in the stomach of bees. 



Mucor corymbifer (Lichtheim). — This fungus forms branched 

 fruit-hy^jhse. The sporangia have a smooth membrane. It has 

 been found in the external auditory meatus, and on bread it forms 

 a dense snow-white growth. Pathogenic in rabbits. 



Mucor rhizopodiformis (Lichtheim). — The spores of Mucor 

 rhizopodiformis and Mucor corymbifer, when introduced into the 

 vascular system of rabbits, can germinate in the tissues, especially 

 in the kidneys, where they set up hsemorrhagic inflammation. 

 Dogs are immune, and. only artificial mycosis is known. It occurs 

 on bread. 



Mucor erectus. — Resembles Mucor racemosus. It occurs on 

 rotting potatoes. 



Mucor circinelloides Mycelium much branched, and 



sporangium carrier is curved. 



Mucor spinosus. — Sporangia chocolate. Columella has short 

 processes or spines. 



ASCOMYCETES. 



Oidium Tuckeri. — Eruit-hyphse bearing single ovoid conidia. 

 Observed in the form of brown patches, covered with a white mildew- 

 like layer on the leaves, branches and young fruit of the vine, 

 producing " grape disease." 



Oidium lactis. — Fruit-hyphse simple, erect and colourless, 

 bearing at their ends a series or chain of conidia. In some cases, 

 the fruit-hypha branches beneath the chain of spores. Spores are 

 short cylinders. The conidia germinate into filaments of varying 

 length, which by subdivision form septate naycelial hyphse ; these 

 and their branches give rise in turn to spores or conidia. The 

 fungus is deeply stained by the ordinary aniline dyes. In a plate- 

 cultivation the colonies appear as white points, and develop into 

 delicate stellate colonies which ultimately coalesce and form a fine 

 mycelial network covering the svirface of the gelatine. The gela- 

 tine is not liquefied. The growth on the surface of agar is similar 

 to that on gelatine. The fungus occurs in sour milk. 



Achorion Schonleinii {Fungus of favus). — Threads branching 

 at right angles. Favus in. man forms yellow crusts on the hairy parts 

 of the body. The crusts are composed of epidermis and mycelial 

 filaments and spores. In plate-cultivations w^hitish colonies are 

 formed surrounded by liquefied gelatine. Cultivated on the surface 



