THE FUNGI WHICH CAUSE PLANT DISEASE 639 



Conidia 2 to many-septate 9. Phragmosporse, p. 657. 



Conidia muriform 10. Dictyosporse, p. 658. 



Conidia filiform, hyaline 11. Scolecosporse. 



Conidia spirally twisted 12. Helicospors. 



Conidia angulose-stellate 13. Staurosporae. 



Tuberculariacese-Mucedinese-Amerosporae (p. 638) 



Conidia hyaline, or bright-colored, continuous, globose to fusoid; 

 hyphae hyaline. 



Key to Genera of Tuberculariacese-Mucedines-Amerosporese 



Sporodochia smooth or nearly so 

 Conidiophores normal 

 Conidia muticate 

 Conidia not covered with mucus 

 Conidia not acrogenous-capitate 

 Sporodochium girt by a heterogenous 



cup 1. Patellina. 



Sporodochium without a heterogenous 

 cup 

 Conidia not catenulate or scarcely so 

 Conidia escaping from interior of 

 hyphae 



Conidiophores branched 2. Endoconidium, p. 641. 



Conidiophores simple 3. Trichotheca. 



Conidia arising on outside of hyphse 

 Conidiophores lacking 

 Conidia large, pellucid 



Conidia globose 4. Spharosporium. 



Conidia oval 5. Diaphanium. 



Conidia small, not pellucid 6. Pactilia. 



Conidiophores present 

 Conidia pleurogenous or acro- 

 pleurogenous 



Conidia globose 7. Beniowskia. 



Conidia ovoid to oblong 8. Tubercularia, p. 642. 



Conidia fusoid to cylindric 9. Fusicolla. 



Conidia acrogenous 



