FUNGI OF IMPORTANCE IN THE DECAY OF TIMBERS. 41 



were studied. The germination temperatures corresponded closely 

 with those of the basidiospores of the respective species except that 

 the oidia germinated better at the higher temperature tried. Dif- 

 fused light haQ no effect upon germination. Ten hours of direct 

 sunlight in May prevented the germination of the secondary spores 

 studied. Neither the oidia nor the chlamydospores resisted drying 

 nor alternate wetting and drying. 



The oidia of Lenzites sepiaria and L. trabea are essentially sticky 

 and were found not to be adapted to dissemination by air currents. 

 They are, however, adapted to dissemination by insects and water. 

 This adaptation may possibly be of some importance in case oidia 

 are found to produce naturally in mills. Thus far, however, the only 

 secondary spores of these fungi found in mills are the chlamydospores 

 of Lentinus lepideus upon the fruit bodies. 





