I.] 



ASCOMVCETES 



37 



conditions of moderate dryness, such as occur out of doors on a fine autumn 

 day, by shaking the fructifications, or even by currents of air set up by 

 walking past them. It can be initiated, as de Bary pointed out, when ripe 



i laricina Mass. ; 



development and ejection of 

 biseriate spores, x 600. 



Fig. 5. Sepitltaria coroftaria Mass.; nni- 

 seriate spores; ascus opening by a lid : 

 branched, septate, clavate paraphyses; 

 x 600. 



isolated asci lying in water are suddenly exposed to the action of glycerine 

 or alcohol, and is clearly due to alterations of tension affecting a 

 number of asci at about the same stage of development. After the fructifi- 

 cation has puffed once or a few times a rest of some hours during which 



