196 



MANUAL OF POISONOUS PLANTS 



Fig. 39. Black Moulds. Zygomycetes. 1-5. Mucor mucedo. 1. Mycelium and young 

 sporangium x 25. 2. Ripe sporangium x 100. 3. The same in optical view x 100. 4. In 

 process of fertilization x 80. 5. Zygospore O), greatly magnified. 6-7. Chaetocladium 

 Jonesii. 6. Conidia x 150. 7. Zygospores. 8-9. Fertilization and formation of zygospores 

 in 9. 10. Conidiophores of Syncephalis intermedia, x 100. 11-13. Fertilization and forma- 

 tion of zygospores in S. cornu x 300. 14. Conidiophore, gelatinous enlargements and black 

 sporangium of Pilolobus crystallinus x 30. 15. Fertilization of Mortierella Rostafinskii x 300. 

 1-7, 14-15 after Brefeld, 8-13 after Van Tiegliem. 



