312 BOTANICAL GAZETTE [APRIL 
rounds the neck and forms the bulk of a definite though not very 
prominent papilla which marks the position of the perithecium 
externally, and is perforated by the ostiole. The asci (fig. 5), 
which arise from a slight cushion at the base of the perithecial 
cavity, are about 210X 7-8 yu, rather slender at maturity, tapering 
slightly to the peculiarly differentiated apex, which is modified 
(fig. 6) in a fashion exactly resembling that seen in the asci of 
Cordyceps and its allies. As the asci mature, the stalk becomes 
more elongate and slender than is represented in fig. 5, and the 
— 
Fics. 1-7.—Aschersonia turbinata Berk.: figs. 1-3, three stromata bearing PY“ 
nidial cups and perithecial pustules, X3 
ascus not fully mature (Zeiss D+4); fig. 6, tip of a nearly mature ascus sh ' 
segmented spores, and fig. 7, separated spore-segments; both Leitz water im.+125 
figs. 4-7 are reduced to one-half. 
eight filamentous spores, which are at first cylindrical and contin- 
uous, are later divided by septa as in Cordyceps. The segments 
thus formed eventually separating from one another, the ascus 
becomes filled with countless spores, rodlike in form, about 10-12 
X2-2.5 u, with rounded ends (fig. 7). The spores and their seg- 
ments are conspicuously vacuolate, so that they present 4 banded 
appearance which gives them a distinct individuality. 
The characters briefly enumerated above apply in general to 
the perfect conditions of the remaining species in which they have 
