Parasitism in the Erysiphaceae. 301 



fcontinued). 



Remar ks. 



23 e, 23f. Aug. 25. The inoculated leaves with flecks of mycelium and a 

 few conidlophores Aug. 29. The infected leaves with powdery masses 

 of spores. 



40a, 40b, 40c, 40d. Sept. 2. Many of the inoculated leaves with flecks of 

 mycelium. Sept. 5. The 24 inoculated leaves all bearing powdery 

 ma.sses of spores. Sept. 12. Infected leaves still with powdery masses 

 of spores; fungus spreadiug to controls. 



32 a, 32 b. Aug. 29. The 9 leaves clearly infected, bearing vigorous patches 

 of mycelium with young conidlophores. Sept. 1. The infected leaves 

 with more or less powdery masses of spores; — controls all free. 



40 i, 40k Sept. 2 Several of the inoculated leaves with flecks of mycel- 

 ium. Sept. 3. 11 of the inoculated leaves with flecks of mycelium 

 and young conidlophores; — controls all free. Sept. 7. The 12 leaves 

 with more or less powdery masses of spores. 



32 e. ,Sublnfection' only. Aug. 28. A few very minute flecks of mycel- 

 ium on some of tlie inoculated leaves. Aug. 30. Flecks of mycelium 

 and a few conidlophores on 2 of the inoculated leaves. Sept. 1. The 

 same on 3 leaves; — controls all free. 



65 b, 65 c. ,Subinfection' only. Sept. 15. A few flecks of mycelium on 4 

 of the inoculated leaves. Sept. 17. 7 of the inoculated leaves with 

 very weak flecks of mycelium and a few scat^ered conidlophores. 



from B. hordeaceus var. glahrescens. 



R e m a r k s. 



61 f. Sept 15. 3 of the inoculated leaves with numerous flecks of mycel- 

 ium. Sept. 16. All 4 leaves with patches of mycelium bearing young 

 conidlophores: all controls free. 



61g, 61h, 61 i. ,Subinfection' only. Sept. 17. A very few (almost soli- 

 tary) conidlophores at the exact places only where spores were sown 

 on 3 of the inoculated leaves [experiment not continued after this date]. 



61k, 611. Sept. 16. Flecks of mycelium and conidlophores on all the inoc- 

 ulated leaves. — controls free Sept. 17. Spores numerous on the 

 infected leaves. 



