196 SALMON : SUPPLEMENTARY 
Libert gives the following diagnosis of Ozdium tritict : “ Epi- 
phyllum, caespitibus oblongis confluentibus fulvis; floccis sim- 
plicibus erectis in articulos pellucidos ovales secedentibus. Ad 
folia viva Trictict repentis, Aestate.” Examination of the speci- 
men of O. ¢ritict in Lib. Pl. Crypt. Ard. fasc. IV, no. 385 shows 
that the fungus is identical with Ozdiam monilioides Link., the 
conidial stage of &. gram’nis. The bulbiform swelling at the base 
of the conidiophore seems a constant feature in the conidial stage 
of E. graminis (see monograph, f/. 9. f. 256 ; and also Garovaglio 
& Cattaneo, Archiv. Lab. Bot. Critt. Univ. Pavia, 2: p/. 2. 1879), 
and was observed in all the specimens in the exsiccati of ‘‘ O. 
tricttct’’ quoted above. 
Bonorden founded his ‘‘ Zorula bulbigera’’ on Rabenh. Fung. 
Europ. Cent. II. no. 275, and published the following diagnosis : 
‘‘Sporis ovatis s. oblongo-ovatis 4—6 concatenatis hyalinis albis, 
hyphis (pedicellis) triseptatis, basi bulbosis; mycelio ramoso, 
septato et repente. Hab. in foliis graminum in Guestphalia.” From 
the description and figures given there can be no doubt that 
“ Torula bulbigera” is nothing more than Oédium monilioides. 
The inflated base of the conidiophore, relied upon by Bonorden as 
the chief specific character, is, as has been pointed out above, 4 
constant feature in the conidial form of Z. graminis. I have not 
seen Rabenb. Fung. Eur. no. 275. 
Torula rubella Bonorden was founded on Rabenh. Fung. Eur. 
Cent. III. no, 281, and the following diagnosis given : «« Sporis 
ovoideis 3—4 concatenatis ; pedicellis articulato-septatis, rubicundis 
subrubiginosis. Hab. in foliis vivis graminum in Guestphalia.” 
This also proves to be the conidial stage of Z. graminis. In Rab. 
Fung. Eur. no. 281, the ‘‘ Zoru/a”’ can be seen passing over into 
pannose mycelium in which perithecia of £. gramiinis are immersed. 
The bulbiform swelling at the base of the conidiophore is present 
in these examples, just as in ‘“ 7. dudbigera’’ (see above). 
Spegazzini ('79) records ‘‘ Oidium monilioides” on Bromus 
unioloides and Avena sativa, in the “ Parque de La Plata, winter 
1882-95.” Nees (Syst. Pilze u. Schwamme, 53. 1817) records a : 
fungus under the same name from Germany.on Dinebra Arabica 
(cult.). | ha 
The haustoria of E. graminis are peculiar in possessing lone 
