240 Barker . — A Fragrant ‘Mycoderma ’ Yeast , 
which preclude the possibility of close relationship between 
two forms. 
It might be argued that the formation of oidia by E. 
decipiens has a parallel in the case of vS. anomalus , in the pro¬ 
duction of the rod-like cells, mentioned above as occurring 
in old cultures, and some of the forms of oidia figured in 
Brefeld’s work are not dissimilar in appearance from the 
rod-like cells of vS. anomalus , the ‘ mycelioid’ forms of which, 
moreover, might be consistently regarded as series of oidia, 
if it were not for the fact that they are developed by budding. 
Nevertheless, the morphological equivalent for S. anomalus 
of the chlamydospores of E. decipiens has not yet been 
definitely determined, and even if it seems probable that 
the brownish-coloured large rounded cells, with well-defined 
cell-wall and fat globules, of the latter are practically chlamydo¬ 
spores, we can scarcely go so far as to argue their morpho¬ 
logical identity. However, Hansen (8) has mentioned the 
power of resistance by the cells of anomalus to unfavourable 
surroundings, and it has been seen that in old cultures, for 
instance, the cells acquire the characters just described. In 
the case of the Yeast, any cell seems to be able to acquire 
the characters of a chlamydospore in a certain sense, but in 
E. decipiens these spores are usually developed in more or 
less definite positions, that is to say at the ends of side 
branches. Attention, however, must be drawn to the fact 
that Brefeld figures (Plate I, Fig. 27, 2, in his work quoted 
above) a chain of oidia, apparently not developed in any 
special position, which were acquiring the characters of 
chlamydospores. Hence the ordinary oidial cell of E. deci¬ 
piens can be looked upon morphologically as a chlamydospore, 
thus corresponding in this capacity to the ordinary vegetative 
cells of the Yeast. 
To carry the resemblance between the two species still 
further, it might be insisted that both form white films on 
the surfaces of nutrient solutions, and the older films of both 
show the presence of chlamydospores or cells that are equiva¬ 
lent to chlamydospores. 
