588 APPENDICES. 



Aspergillus ochraceus. — At first flesh-coloured, and then 

 ochre-yellow heads. 



Aspergillus albus Pure-white fruit-heads. 



Aspergillus clavatus. — Club-shaped fruit-heads on long stems. 



Aspergillus nidulans Bread and potatoes acquire a reddish- 

 brown colour. Pathogenic in rabbits. Occurs on bread. 



Aspergillus subfuscus The growth is olive-yellow in colour. 



Pathogenic in rabbits. Occurs on bread. 



Aspergillus flavescens The growth is yellowish-green. 



Pathogenic in dogs and rabbits. Occurs on bread. 



Penicillium glaucum. — Occurs as a white, and later a blue 

 green, mould, on which dew-like drops of liquid may appear. Its 

 spores are present in large numbers in the air, and are liable 

 to contaminate cultivations. The fruit-hypha bears terminally a 

 number of branched cylindrical cells, from which chains of greenish 

 <;onidia are, developed. It is the commonest of all moulds. 



Botrytis Bassiana Hyphse and spores colourless. Hyphse 



usually simple, but sometimes united in arborescent stems. It is 

 the cause of muscardine, a fatal disease of silkworms, and occurs 

 also in various other caterpillars and insects. 



Chionyphe Carteri. — Mycelial filaments observed by Carter 

 in Madura disease. 



