MONOGRAPH ОЕ CHAETOMIUM AND ASCOTRICHA 209 
type of branching which is found in Ch. elatum Kze. The spores 
as figured are equally characteristic of either species. In a foot- 
note Delacroix stated that the plant was allied to Ch. lanosum Peck, 
and to Ch. comatum (Tode) Fr., but such a condition could hardly 
be possible since those species differ so widely. 
Reference has already been made to the possible identity 
of Ch. Fieberi var. macropoda, described by Spegazzini (96, 
р. 250) іп 1898, and Ch. globosum Kze. Saccardo (85) ге- 
described this variety giving a much clearer diagnosis, and here 
again there is marked correspondence with Kunze’s species. 
The only variation seems to lie in the spores which, as described 
by Saccardo, are slightly narrower than those of Ch. globosum. 
Since original specimens are not at hand it is impossible to come 
to a satisfactory conclusion regarding this variety. 
It has already been pointed out that Ch. rostratum, published 
by Spegazzini (96) in 1899, may possibly be identical with Ch. 
caprinum Bainier, but since Spegazzini's description is not entirely 
clear, and no type material is at hand, it is impossible to decide 
the matter with certainty. This species has been reported by 
A. P. Morgan (62), who found it on rabbit dung at Preston, Ohio, 
and who kindly forwarded a specimen of his collection to the 
present writer. Тһе perithecia obtainable from the specimens 
were very much broken, however, and only their most general 
characteristics could be made out. 
SPECIES EXCLUDENDAE 
As a result of a thorough examination of the literature con- 
cerning described species of Chaetomium, and notes published in 
connection with exsiccati, a considerable number of names have 
been found which should be excluded from further use. In some 
cases the plants to which the names were originally applied have 
apparently never been described, and there is every reason to 
believe that their characteristics will never be clearly understood. 
In other cases the published account is so brief and inadequate 
that it is impossible to arrive at a satisfactory conclusion regarding 
the form in question, while the descriptions of several other species 
indicate clearly that they are not Chaetomia. The following list 
includes all names whose further use should be discontinued for 
the reasons above mentioned. 
