Kig. 5. — Rkizopiis jteca/is. i, section of a diseased lily bulb, the dark portion at 

 the base of the bulb is the part attacked by the fungus ; a, portion showing the 

 fungus in the fruiting condition, growing on the roots of a bulb, natural size ; 3, 

 cluster of the fruit-bearing branches of the fungus, X 3 ; 4, a cluster of the sporangeal 

 form of fruit, X so; 5, diagrammatic section of a sporangium; a, columella; the 

 portion 5, between the columella and the outer wall of the sporangium, is filled with 

 conidia ; 6, spores, some of which are germiuaiing, X200; 7, spores, showing the 

 delicate markings on the epispore, X700; S, mature zygospore, X200; 9, mycelium 

 of the fungus running between cells filled with starch, X 300 (froni ICf7v Bulietiri). 



