156 
MONOGRAPH OF USTILAGINES. 
We can only give an outline of the contents of these fifty quarto 
pages, and recommend our readers to add the work to their library 
at once, as it will be found to be one of permanent interest, without 
which no student of the Coniomycetes can long prosecute his studies. 
The genus Ustilago contains seventy -two species, arranged as 
follows : — 
A. Spores with the epispore smooth. 
f Spores globose, rounded-oblong, or a very little flattened. 
a. Epispore brown. 
h. Epispore violet, 
c. Epispore violet- grey. 
If Spores rounded or oblong, flattened. 
a. Epispore blackish. 
h. Epispore brown. 
B. Spores with a granular epispore. 
C. Spores with the epispore papillose. 
a. Epispore brown. 
h. Epispore violet. 
D. Sfores with the epispore spinulose. 
E. Spores with the epispore warted. 
F. Spores with the epispore reticulated. 
a. Epispore brown. 
h. Epispore violet. 
c. Epispore reddish-violet. 
d. Epispore colourless, or very pale. 
The measurement of the spores in each species is given in micro- 
mill emetres. 
The second genus is Sorosporium, which includes the two British 
species of Tuhurcinia. It is only a small genus, of six species, 
and of these we presume that Sorosporium Saponarice, Bud., is the 
The next genus is Thecaphora, with its twelve species, calling 
for no special remark. 
The fourth genus is Urocystis, under which is included Tuhur- 
cinia Orobanches, Fr., and Tuhurcinia Monotropce^ Fr. 
The fifth genus is GeinineUa^ with four species, one of which is 
Ustilago Cissi, Tui., and another, Thecaphora Delastrina, Tul. The 
latter always appeared to us an anomalous Thecaphora. 
The sixth genus is Entyloma (after De Bary in Botanische 
Zeitung, for 1874), only containing four species, one of which is 
stated to be equal to Cylindrosporium Ficarice^ Berk., of which we 
entertain some doubt. 
The last genus is Tilletia, with fourteen species. From this 
brief survey the character of the work can be estimated. Each 
genus has a full diagnosis at the commencement, and the only 
drawback is one which might easily have been remedied, namely, 
that in no case is the work cited in which any given species is 
