[Vor. 5 
122 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
which pass out to the under side of the leaf and there branch, 
become interwoven and form the membranous fructification. 
The spores are very uniform in size and form, hyaline, 
even, slightly curved, 9-13»x:31-4 д for all American collec- 
tions, and were published by von Hohnel as 10-1244} и 
for the Mysore type, and noted by Miss Wakefield as 10-13 
4—5 и for the latter. 
Von Hohnel described Cooke’s type of Pellicularia koleroga 
from Mysore as having ‘‘Grundhyphen gerade verlaufend, 
dünnwandig, meist blaszbráunlich, 6 bis 7 y breit, lang- 
gledrig; . . . . Zweige zartwandig, hyalin, mit aufeinander 
fast senkrecht stehenden Abzweigungen versehen." Miss 
Wakefield has noted as hyaline the hyphae of this specimen 
which she has drawn. 
In the comment following the specific description of Pellic- 
ularia koleroga, Cooke stated, **threads creeping, branched, 
septate, interwoven into a subgelatinous pellicle which can 
be stripped from the leaf when moist." The introduction of 
the word subgelatinous was unfortunate and misleading, for 
it gave the idea of a fructification of the consistency of a 
tremellaceous fungus or of a gelatinous lichen. If we turn 
to Popular Science Review 15:164, we see that Cooke was 
led to assume the presence of a gelatinous medium to account 
for the fact that organs which he regarded and figured as 
spores—which we now conclude were the basidia—did not 
float loose in any ease from the hyphae upon which they were 
borne. In all fungi of gelatinous or tremellaceous consis- 
tency which the present writer has studied, the gelatinous 
substance is due to a gelatinous modification of the outer por- 
tion of the cell wall of the hyphae concerned, so that only 
the lumen of the hypha remained sharply defined when ob- 
served with the mieroseope; the cell walls of the hyphae of 
the type of Pellicularia koleroga in the preparations received 
from Miss Wakefield are not in the least degree gelatinously 
modified. However, when, in ease of other collections, I 
moisten the fructification on the leaf and detach it from the 
surface of the leaf with the point of a scalpel, I do detect in 
