May 1904] 
A Translation from Sac car do 
111 
Hyphomycetae: caespitulus; sporodochium; hyphae; coni- 
diophora; conidia. 
Obs. From the spore, in the broad sense, arises by ger¬ 
mination a promycelium, which produces sporidiola 
(not spcridia, as many say). 
VIII. 
Fungi imperfecti, or Deuteromycetae, are to be cited and de¬ 
scribed along with their perfect stages (if these are clearly indi¬ 
cated). They should also be described separately in systematic 
works under their own name and with their form relatives, or at 
least cited here, with a reference to the place where they are de¬ 
scribed with the perfect forms. 
The advantage of describing separately all the forms of im¬ 
perfect fungi arises from the fact that we are entirely ignorant 
of the perfect stages to which the vast majority of this immense 
group belong, and that these forms are for the most part widely 
removed from the perfect stage, whence the great difficulty of 
determining whether one form or another has already been de¬ 
scribed (without a name) under its perfect stage. From this 
rule should be excepted species of the genus Uredo, which are 
most frequently associated with the teleutospore stage ( Uro - 
myces, Puccinia, etc.), with which alone they should be de¬ 
scribed. But species of Aecidium, Epitea, Caeoma and Aecidio- 
lum are to be described or at least cited separately. Conidial 
stages of Peronospora and Cystopus are to be described but once, 
in connection with the perfect stages. 
IX. 
The names of fungi which do not show metagenesis should 
conform to the rules of nomenclature for other plants, but the 
metagenetic Uredinaceae and Ascomycetae should follow especial 
rules. 
X. 
The proper name of one of the Uredinaceae is that applied 
to the teleutospore stage, the secondary name is that given to 
one of the earlier stages (Uredo, Epitea, Caeoma, Aecidium, 
Aecidiolum) . Moreover, when the name of an earlier stage of 
any species is found to have been published before the name 
of the correlated perfect stage, it is not permissible to transfer 
the name of the imperfect stage to the perfect one upon the plea 
of priority, unless the former is found to comprise the perfect 
stage also, as often happens in Uredo, with respect to species of 
Uromyces, Puccinia, Coleosporium, etc. 
When we wish to transfer the name Aecidium to the teleu¬ 
tospore stage, as formerly permitted, we act directly contrary to 
