LIBERATION OF SPORES AND CONIDIA in 



sun's rays for a moment on the hymenium by means of 

 a pocket-lens. 



In the Uredineae the chains of aecidiospores consist 

 of alternating cells which become spores, and of small 

 sterile cells which eventually deliquesce, setting free the 





FIG. 36. Peziza -vesiculosa, a typical ascigerous fungus 

 belonging to the Discomycetes, which exhibits the peculiarity 

 of puffing out the spores in clouds from the asci. Nat. size. 



spores as a powdery mass. Magnin states that in Cystopus 

 candidus and allied species, the liberation of the conidia 

 is due to the presence of a ring of callus which eventually 

 becomes soluble in water. Woronin has described an 

 elaborate arrangement for effecting the breaking up of the 

 long chains of conidia belonging to species of Sclerotina. 

 This apparatus, which alternates with the conidia in the 

 chain, is termed a disjunctor. 



In the Hymenomycetes the mature spore is cut off 

 from the apex of its sterigma by a transverse wall. The 



