310 BOTANICAL GAZETTE {APRIL 
In Trinidad, where the flora as well as the insect fauna is far 
more varied, Aschersoniae were numerous, and in most instances 
it was possible to gather abundant material of each species. These 
gatherings in the case of four or five species usually included the 
ascosporic condition, which was often abundant, and, as in the case 
of A. téurbinata, occurred either by itself or associated on the same 
stroma with the pycnidial form; so that there could be no question 
as to the actual connection of the two conditions. As far as could 
be determined, the position of growth, whether on the upper or 
lower side of a leaf for example, in shady and moist or in drier 
and more open situations, has little if any influence on the develop- 
ment of the perfect condition. In some instances it appeared 
to follow the pycnidia in older specimens, while in others it was 
as evidently primary in its development and unaccompanied by 
pycnidia. 
The general character and appearance of the perfect condition 
recall those of some species of the genus Cordyceps, to which Ascher- 
sonia is evidently closely related; and, as in this instance, the 
association of the perithecia and the development of perithecial 
stromata varies in different cases. In some instances the peti- 
thecia may be closely and definitely grouped in a compact and 
prominent stromatic outgrowth from the general stroma, which 
may be otherwise sterile, while in many the whole stromatic mass 
may become transformed into a pulvinate aggregation of densely 
crowded perithecia. The general appearance of such forms, which 
in one instance may be definitely stalked, is not unlike that of some 
species of Cordyceps or Hypomyces. In other cases the perithecia 
may be irregularly scattered in a somewhat looser stroma, and 
might at first be mistaken for the common Cordyceps (Torrubiella) 
arachnophila, which is often found on leaves with or without 1ts 
imperfect or Isaria (Gibellula) condition. But in this instance, 
although the host may be as completely obliterated as it is by 
Aschersoniae, the perithecia are always much more prominent. 
Having assembled a considerable number of Aschersoniae from 
various sources, it was first my intention to attempt 4 revision of 
the genus, but an examination of the literature and such mater 
as is available has made it evident that this is hardly possible at 
