148 Transactions British Mycological Society. 
which have fallen on the perithecia. The wall is parenchymatous, 
and very thick. The ostiolum is obscure; in some cases, a minute, 
conical ostiolum, on a very small, flat disc can be detected, but 
in general this is sunken and the apex of the perithecium appears 
merely impressed. When mature, the apex is rather widely 
perforate. 
The asci are clavate, tapering below into a short pedicel, with 
a well-defined foot. They are very thick-walled (up to 8y), 
and the lumen is continued as a short, cylindrical hollow into 
the thickened apex. Paraphyses are numerous, linear, branched, 
and slightly shorter than the asci. The asci are eight-spored, 
with the spores usually biseriate. . 
Ellis and Everhart gave the dimensions of the asci as 150- 
190 x 20p, and Seaver gives 150-200 x 20p. My measure- 
ments are, from Florida specimens, up to 270 x 20m; from 
Dominica, 200-240 x 20-22 »; from Zululand, up to 275 »; from 
Ceylon, 250-290 x 24-28. Miyabe and Sawada note that 
their Formosan specimens apparently differed from North 
American specimens in the length of the ascus, which was 
189-280 »; but Ellis and Everhart’s measurement would appear 
to be too small. 
I have not been able to observe the dehiscence of the asci. 
In perithecia which contain free ascospores, the asci from which 
they were liberated seem to have disappeared. In some 
gatherings, it has been noted that when the spores are mature, 
the lateral walls of the ascus become thin, but the apex remains 
thickened. In some instances, when the preparation had been 
subjected to pressure in an attempt to set free the spores, one 
issued, for the greater part of its length, through the foot; this 
occurred in both Ceylon and Florida specimens. 
The spores (Plate V, fig. 15) are clavate, rounded above, and 
tapering to an obtuse point below. The sides are often not 
straight, but incurved somewhat irregularly about the middle. 
They are hyaline, multiseptate, sometimes slightly constricted 
at the septa. Ellis and Everhart gave the dimensions as I10— 
140 x 6-7 w; Seaver, as 100-120 x 6-7 uw. My Florida specimens 
show spores 106-144 x 7-9 4%: Dominica, immature, but up to 
100 w: Zululand, 80-128 = 7 uw, with one ascus, abnormally con- 
stricted, in which the longest spore measured 9g0p and the 
shortest 52 «4: Ceylon, 95-150 x 7 p (in the ascus), 130-176 x 8 
(extruded spores), with one abnormal spore, almost as long as 
the ascus, 225 uw. Rolfs and Fawcett do not give spore measure- 
ments, but a rough estimate from their figures would appear 
to make them 65-80 pz long. 
All the collections enumerated appear to be the same species. 
One point has, however, been observed in a Ceylon gathering, 
