445 



le temps est humide ce revêtement devient visqueux :" 



Massée ') also speaks of „leaves covered with a sliniy, 

 gelatinous matter" and of „colourless hyphae, embedded 

 in a mucilaginous matrix". Thèse characteristics I never 

 noticed. However damp the wether was, the powdery 

 appearance never vanished. Then Delacroix mentions 

 brown-coloured drops, which flovv from the diseased leaves 

 when the air is always damp; this I never saw in the 

 silverthread. 



Cooke says (Delacroix, pag. 69) that the berries may 

 be attacked and fall in great numbers; I never saw, even 

 in trees badly attacked, this in the case of our disease. 

 So I concîude that silverthread and Pellicularia are not 

 identicah 



A third disease, named candelillo, which occurs in 

 Venezuela is described by E r n s t. There seems to^be a detailed 

 publication in theSpanishlanguage; as the pages 1178— 1179 

 in the -Botanisch Centralblatt are nothing more than a 

 „Notiz". He called the fungus Erisyphe scandens, but he 

 adds that it is only a preliminary identification. Then 

 Ernst says: „derselbe (der Pilz) scheint manche Aehnlich- 

 keit mit Pellicularia Koleroga Ck. zu haben." Delacroix 

 seems to hâve read the Spanish publication by Ernst; 

 for he gives some particulars which are not to be found 

 in the German article. According to Delacroix Ernst 

 sent spécimens to Cooke, which gave the folio wing 

 resuit: „0r, l'examen d'échantillons envoyés à Cooke 

 par le Dr. Ernst lui même a permis au mycologue 

 anglais d'affirmer l'identité des deux parasites dans le 

 candelillo et le Koleroga". Notwithstanding this statement 

 it seems to me, that one may be somewhat sceptical 

 about this identity. The genus Pellicularia is a very in- 



1) Massée, 1. c, pag. 461. 



