222 ; BOTANICAL GAZETTE [SEPTEMBER 
Linnaeus’ Species plantarum (1753) as the starting point for the nomen- 
clature of the Myxomycetes. 
At the opening of the session after the noon recess it was suggested that 
an adjournment of the session be taken for an hour in order to allow all 
the specialists in the different groups of cryptogams who were present to 
hold an informal conference for the purpose of agreeing upon recommenda- 
tions as to the dates for the starting points of nomenclature which would 
be acceptable to them. These recommendations were presented to the 
section on Tuesday afternoon and Wednesday morning, and were adopted 
as rules without further discussion, no one expressing a desire to discuss 
them in general session. The majorities+ in favor of the different votes 
were very large, in the case of fungi, for instance, 130 to 4. The dates 
adopted by the Brussels Congress, therefore, for the starting points for 
the nomenclature of the ‘“‘cellular cryptogams” are as follows: 
Myxomycetes.—Linnaeus, Spec. plant., 1753. 
Fune.—Frigs, Syst. Myc., 1821-1832, except for the Uredinales, 
Ustilaginales, and Gasteromycetes, which date from PERSOON’S Synopsis, © 
1801. 
LicHENS.—LInnaeus, Spec. plant., 1753. - 
AtGar.—Gomont, Nostocaceae homocysteae, 1892-1893; BORNET et sie: 
HAULT, Nostocaceae heterocysteae, 1886-1888; Ra.rs, British Desmidiacede, 
1848; Hirn, Oedogoniaceae, 1900; LiNNEAUS’ Spec. plant., 1753: for all 
other algae except the Chroococcaceae. 
Bryopuytes.—HeEpwic, Spec. musc., 1801-1830, for the Mosses; LIN- 
NAEUS, Spec. plant., 1753, for the Liverworts. f 
The general position taken by the congress is well shown in the cas¢ "I 
bryophytes, in which the fundamental Species muscorum of Hepwic was — 
adopted for mosses; while for liverworts, on which there exists 00 work 
corresponding to the Species muscorum, it was decided to g° back 
LINNAEUs. ‘ 
Action upon the Chroococcaceae, bacteria, diatoms, and fag 
was postponed for future discussion, partly because it was difficult to selec 
satisfactory works as a basis of nomenclature, and partly because those : 
groups have been studied also by zoologists, and it is therefore necessary 
to take into consideration zoological as well as botanical treatises. 
With regard to the nomenclature of the imperfect fungi, the 
rule was adopted: 
therefore greater than the actual number of delegates present. 
questions the voting proceeded simply by a show of hands. 
following 
