NOTES ON THE ERYSIPHACEAE 107 
are remarkable for possessing appendages which are 2—4-septate 
and colored below for half their length or more and are often ge- 
niculate or irregularly bent. Only one mature apex of the appen- 
dages was found and this was identical with that of JZ alni, being 
four times dichotomously branched, with the tips of the ultimate 
branches regularly recurved. The form certainly requires further 
study. As regards the presence of colored appendages, a similar 
Japanese form on Corylus rostrata Mandschurica has already been 
noted (monograph, p. 142). 
The fungus set out as “ MZ. berberidis (DC.) Lév., in foliis vivis 
Berberidis vulgaris L.., Petrovsko-Rasumoskoje prope Mosquam, 
1899 XI. Legit Serebriaunikov,”’ in Jacz. Kom. Franz. Fung. Ross. 
exsicc. no. 3374 is certainly not that species, but J7 a/nz. The 
specimens are immature, and the appendages of most of the peri- 
thecia have an undeveloped apex, here and there, however, one 
May be found in which the apical branching characteristic of J/. 
ani has occurred (see Pl. 9. f. 16, 17). The occurrence of the 
Present species on Berberis vulgaris and the presence of mycelium 
and young perithecia show that it is undoubtedly growing on this 
Plant is most interesting, as Berberis is the usual host-plant of J/. 
berberidis. 
Freeman’s record (20) of the occurrence of MZ. ali on Tilia 
Americana, from « Hennepin, Minnesota, U. S. A. (Freeman, no. 
58, 1898)” proves to be due to an error, the host plant having 
" wrongly identified. According to specimens sent to me, the 
ungus is growing on Corylus Americana. 
“MM. Japonica P. Henn.” on Cornus macrophylla, from Japan, 
fannot be distinguished from MZ. alni (see “ Erysiphaceae of Japan,” 
$8, p. 439), 
M. ant Lonicerar (DC.) Salm. (Monograph, p. 142) 
Exsicc. add : Krieger Fung. saxon. 1224 (in herb. Jaczewski). 
flosts, add : Syringa vulgaris. 
U have had the opportunity, through the kindness of Professor 
= ‘snus, of examining the specimen of “ JZ Ehrenbergu : 
‘fae alni lonicerae) found by Allescher (see Bericht. botan. 
Nia m~ Landshut, 146-152. 1887) on Syringa vulgaris. The 
ae sess certainly appears to belong to the present variety. The 
