88 
A Neiv Saccharomycete 
the true yeasts, and Peglion divided the Saccharomycetes into four genera, 
i.e. Saccharomyces , Schizosaccharomyces, Monospora (= Monosporella) and 
Nematospora. 
On the other hand Hansen (1904), to whom we owe the recent classi¬ 
fication of Saccharomycetes which is accepted by almost all mycologists, 
considers the last two genera as representing “doubtful Saccharomycetes,” 
and he remarks that they are rather rare fungi which were observed only by 
the authors who discovered them 1 , moreover, that he and his collaborators 
had searched for them in vain in the hope of obtaining materia) for purposes 
of study. Notwithstanding the great authority of Hansen, I cannot but 
Fig. III. Nematospora coryli Pegl. after Peglion. 1 and 2, budding cells; 3-4, stages of growing 
cell; 5, ascus (a.) with eight spores (sp.); 6, spore stained with gentian violet, showing the 
nucleus ( n .) and flagellum (/.); 7, spore after losing its flagellum; 8, budding spore. 
believe that Monosporella and Nematospora have been sufficiently known for 
purposes of classification, and that they should without hesitation be placed 
in the family of Saccharomycetaceae. In fact all the characters of this family, 
as defined by Hansen himself, cover perfectly well the representatives of these 
two genera. Thus Hansen’s classification, with the few modifications and 
details added by Lafar (1910), is as follows: 
I shall omit the expressions (for the group A) “true Saccharomycetes” 
and (B) “doubtful Saccharomycetes” and shall add more details bearing 
on the genus Monosporella. In Hansen’s classification the Saccharomycetaceae 
are widely separated from the genus Schizosaccharomyces for which he creates 
the family Schizosaccharomycetaceae. 
1 I would note that M. bicuspidata Metsch. was often observed by Chatton (1907) and cultures 
of N. coryli were sent by Peglion to the late Prof. A. Giard of Paris who tried to inoculate hazel¬ 
nuts with the fungus. 
